{"title":"Electrical","description":null,"products":[{"product_id":"carrier-09de084c910-transformer-h2ut4z","title":"OEM Carrier 40VA Transformer HT01BC208 for Model 09DE084C910","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC208 for Model 09DE084C910\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer for the \u003cstrong\u003eCarrier 09DE084C910\u003c\/strong\u003e. The transformer steps line voltage (120V) down to the 24V AC signal that powers your entire control circuit — including the thermostat, contactor coil, and control board. When this part fails, the system goes completely unresponsive: the thermostat goes dark, no calls for heating or cooling are processed, and the unit will not run in any mode. It is often the first component to diagnose when nothing else responds.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rating | Factory-matched OEM tolerances | Direct plug-in or wire-lead termination\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory-specified OEM transformer (part HT01BC208). OEM units are wound and insulated to Carrier's exact VA and thermal specifications. Generic transformers may be under-rated in VA, leading to overheating, premature failure, or nuisance tripping of the built-in fuse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 24V output after install). Always photograph existing wiring before disconnecting leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003e09DE084C910\u003c\/strong\u003e. Verify input voltage and VA rating on your unit's data plate before ordering. If your system has a separate 40VA fuse or fusible link on the secondary circuit, inspect it as well — a shorted component downstream may have caused the original transformer failure. Our HVAC parts specialists are available to confirm fitment before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640118432115,"sku":"CARRIE-09DE084C910-TRANSFORMER-HT01BC208","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640118464883,"sku":"CARRIE-09DE084C910-TRANSFORMER-HT01BC208-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_b36f3728-f8e5-4e94-8adb-fc5a0c7d5f9a.jpg?v=1775016603"},{"product_id":"carrier-09de084c810-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V for 09DE084C810","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V — HT01BC208 for Model 09DE084C810\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier control transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e), the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE084C810\u003c\/strong\u003e. The transformer steps down the primary line voltage to power the 24V control circuit that operates your thermostat, contactor coil, and all low-voltage safety controls. When this transformer fails, the entire control circuit goes dead — the system will not respond to the thermostat, and no heating or cooling can occur. A blown transformer is commonly caused by a shorted control wire, a failed component drawing excess current, or simple age-related insulation breakdown.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary | 115V secondary | Cross-references: 320659-301, 2-05757-1 | Factory-matched Totaline OEM unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact Carrier factory tolerances, ensuring proper VA capacity and thermal protection. Undersized or generic transformers can overload and fail prematurely, risking damage to connected control boards and contactors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring before disconnecting. Verify primary voltage on the unit data plate before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003e09DE084C810\u003c\/strong\u003e. Verify your unit's primary voltage and VA requirement on the data plate before ordering. This part is also used across Carrier, Bryant, and Payne platforms sharing the same 230V primary \/ 40VA specification. Questions about fitment? Our HVAC parts team confirms compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640118661491,"sku":"CARRIE-09DE084C810-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640118694259,"sku":"CARRIE-09DE084C810-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_cbe7aa18-5003-4d1e-b710-bb393522a049.jpg?v=1775025860"},{"product_id":"carrier-09de084c610-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V for 09DE084C610","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V — HT01BC208 for Model 09DE084C610\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer for the \u003cstrong\u003eCarrier 09DE084C610\u003c\/strong\u003e, sourced directly from Totaline\/Carrier. The transformer steps down line voltage to power the 24V control circuit that governs your thermostat, contactor, gas valve, and all low-voltage safety controls. When it fails, the entire system goes silent — no thermostat response, no fan, no heat or cooling — because the control circuit loses its power source entirely.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary voltage | 115V secondary voltage | 50\/60 Hz | OEM part number HT01BC208 | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Totaline\/Carrier OEM transformer built to exact factory VA and voltage tolerances. Undersized or off-tolerance aftermarket transformers can trip internal thermal fuses prematurely or fail to hold voltage under full control-circuit load, leading to nuisance lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Always shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, wire stripper, multimeter. Photograph all wire connections before removal. Verify primary and secondary voltages with a multimeter after install before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our NationalHVACParts.com warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the \u003cstrong\u003eCarrier 09DE084C610\u003c\/strong\u003e. Always verify the VA rating and primary\/secondary voltages on your existing transformer's label before ordering to confirm fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before you order — contact us today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640119021939,"sku":"CARRIE-09DE084C610-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640119054707,"sku":"CARRIE-09DE084C610-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_de5056e1-2b01-46f0-bb91-043fe74f32b7.jpg?v=1775025857"},{"product_id":"carrier-09de084c600-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V\/115V for 09DE084C600","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V for Model 09DE084C600\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE084C600\u003c\/strong\u003e. The transformer steps down the incoming line voltage to power the 24V control circuit that governs the thermostat, contactor coil, and all low-voltage safety controls. When this transformer fails, the entire control circuit goes dead — no thermostat response, no fan, no cooling or heating — making it one of the first components to check when a unit shows zero activity despite having power at the disconnect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 230V primary \/ 115V secondary | 50\/60 Hz | Totaline OEM factory part | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM Totaline\/Carrier transformer is wound to exact factory VA and voltage tolerances. Generic or undersized transformers can sag under load, cause nuisance control board faults, or fail prematurely when multiple accessories share the secondary circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off power at the disconnect and confirm zero voltage with a meter before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. A blown transformer often signals a downstream short — inspect wiring and control boards before energizing the replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits Carrier model \u003cstrong\u003e09DE084C600\u003c\/strong\u003e. Verify primary voltage (230V) and VA rating (40VA) against your unit's data plate before ordering. This part also cross-references Carrier\/Bryant\/Payne systems using part numbers 320659-301 or 2-05757-1. Our fitment team is available to confirm compatibility before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640120136051,"sku":"CARRIE-09DE084C600-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640120168819,"sku":"CARRIE-09DE084C600-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_a10db2d2-029c-4602-a74b-de8cf61394e7.jpg?v=1775025867"},{"product_id":"carrier-09de084c510-transformer-h2ut4z","title":"OEM Carrier 40VA Transformer 120V–24V for Model 09DE084C510","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V–24V for Model 09DE084C510\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier 09DE084C510\u003c\/strong\u003e HVAC system. The transformer steps down line voltage from 120V to the 24V needed to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When the transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system will not respond to any commands, and no heating or cooling can occur.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V secondary | 40VA rating | Factory-matched construction for reliable low-voltage output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to Carrier's exact VA and voltage tolerances. Generic transformers may under-deliver on VA capacity, causing nuisance tripping or premature failure when contactor coils draw peak current on startup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker before replacing. Tools needed: flathead and Phillips screwdrivers, wire nuts or terminal connectors, multimeter (to verify 24V output post-install). Photograph existing wiring before disconnecting any leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003e09DE084C510\u003c\/strong\u003e system. Confirm your unit's control voltage (24V) and VA draw on the data plate or wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640120562035,"sku":"CARRIE-09DE084C510-TRANSFORMER-HT01BC208","price":33.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640120594803,"sku":"CARRIE-09DE084C510-TRANSFORMER-HT01BC208-GEN","price":29.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_d4358ca3-d6ee-47c6-9f66-fface090c830.jpg?v=1775016336"},{"product_id":"carrier-09de084c100-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V for 09DE084C100","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V for Model 09DE084C100\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BC208) is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE084C100\u003c\/strong\u003e. The transformer steps down line voltage to the low-voltage control circuit that powers your thermostat, contactor coil, and all 24V safety controls. When the transformer fails, the entire control circuit goes dark — no thermostat response, no contactor pull-in, and no system operation whatsoever. A failed transformer is often the first suspect when a system is completely unresponsive despite having power at the disconnect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary input | 115V secondary output | 50\/60 Hz | OEM part number HT01BC208 | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier\/Totaline OEM transformer wound to exact factory VA and voltage specifications. Generic transformers frequently underperform on VA capacity, causing nuisance trips and premature failure under high-demand control loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Photograph existing wiring connections before disconnecting. Match wire leads to labeled terminals on the new transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003e09DE084C100\u003c\/strong\u003e. Verify primary voltage and VA rating on your unit's data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists confirm fitment before every order — contact us today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640121282931,"sku":"CARRIE-09DE084C100-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640121315699,"sku":"CARRIE-09DE084C100-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_7ad6aadf-d11a-4511-8489-258b414d69d1.jpg?v=1775025855"},{"product_id":"carrier-09de064c900-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V\/115V for 09DE064C900","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V for Model 09DE064C900\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE064C900\u003c\/strong\u003e. The transformer steps down line voltage to power the low-voltage control circuit that runs your thermostat, contactor coil, and safety switch logic. When this transformer fails, the entire control circuit loses power — nothing responds, the thermostat goes blank, and the system won't start. If you're seeing a completely unresponsive unit with no 24V signal at the board, a failed transformer is one of the first components to test.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary voltage | 115V secondary voltage | OEM Part # HT01BC208 | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Totaline\/Carrier OEM transformer wound to exact factory VA and voltage specifications. Generic transformers often run outside rated tolerances, risking control board damage or nuisance tripping of the internal fuse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all wires before disconnecting. Confirm secondary output voltage with a multimeter before restoring power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for Carrier model \u003cstrong\u003e09DE064C900\u003c\/strong\u003e. Verify primary and secondary voltages against your unit's data plate before ordering. Cross-reference numbers 320659-301 and 2-05757-1 can be used to confirm fitment. Need help verifying the correct part? Our HVAC parts specialists confirm compatibility before you order — reach out today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640123806067,"sku":"CARRIE-09DE064C900-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640123838835,"sku":"CARRIE-09DE064C900-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_05aa4af9-cb4f-4f3c-b2ad-ababcbdf64c5.jpg?v=1775025865"},{"product_id":"carrier-09de064c800-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V\/115V — 09DE064C800","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V for Model 09DE064C800\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier 09DE064C800\u003c\/strong\u003e. The transformer steps down incoming line voltage to power the low-voltage control circuit that operates your thermostat, contactors, and all safety controls. When it fails, the entire system loses communication — the thermostat goes blank, no heating or cooling stage responds, and in many cases a blown 3-amp fuse is the first sign of trouble.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary input | 115V secondary output | Totaline\/Carrier OEM factory part | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to exact factory tolerances for the 09DE064C800 control circuit. Generic transformers often carry lower VA ratings or looser voltage tolerances, risking nuisance tripping or premature failure of downstream controls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm zero voltage before touching wiring). Photograph all wiring connections before removal. Transfer wires one at a time to the new unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock unit ships the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for use in Carrier model \u003cstrong\u003e09DE064C800\u003c\/strong\u003e equipment. Always verify primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Have a question about fitment? Our HVAC parts team will confirm compatibility before you buy — contact us today and get your system back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640124002675,"sku":"CARRIE-09DE064C800-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640124035443,"sku":"CARRIE-09DE064C800-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_78e4d5af-ef1b-4b11-9fbc-6c55ccd7c665.jpg?v=1775025873"},{"product_id":"carrier-09de064c510-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230\/115V — 09DE064C510","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V for Model 09DE064C510\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BC208) is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE064C510\u003c\/strong\u003e. The transformer steps voltage down from the primary supply side to power the low-voltage control circuit that operates contactors, relays, thermostats, and safety switches. When this transformer fails, the entire control circuit goes dead — the system will not respond to the thermostat, and nothing will operate. A faulty transformer is often the cause of a completely unresponsive HVAC system even when line voltage is confirmed present.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary \/ 115V secondary | 50\/60 Hz | OEM part number HT01BC208 | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Totaline\/Carrier OEM transformer wound to exact factory VA and voltage tolerances. Aftermarket transformers often run undersized VA ratings, causing premature burnout — especially on systems with high control-circuit loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: multimeter, insulated screwdrivers, wire nuts or spade connectors. Verify primary and secondary voltages with a meter before and after installation. Label or photograph all wiring connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003e09DE064C510\u003c\/strong\u003e. Always verify the primary voltage (230V), secondary voltage (115V), and VA rating (40VA) against your unit's data plate before ordering to ensure a correct fit. Our parts team is available to confirm compatibility before you buy — ships same day, no hassle.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640125149555,"sku":"CARRIE-09DE064C510-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640125182323,"sku":"CARRIE-09DE064C510-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_ef970e48-e50a-4deb-8ba6-6bd06efa6287.jpg?v=1775025848"},{"product_id":"carrier-09de064600-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V\/115V — 09DE064600","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V for Model 09DE064600\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE064600\u003c\/strong\u003e. The transformer steps down the primary line voltage to the secondary voltage required to power the low-voltage control circuit in your HVAC system. When this transformer fails, the entire control circuit loses power — the thermostat goes blank, the system will not call for heating or cooling, and nothing responds. Replacing a failed transformer is one of the most effective repairs you can make to restore full system operation quickly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary voltage | 115V secondary voltage | Totaline\/Carrier OEM-matched design | Factory tolerance for reliable control circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier part. Generic transformers often use lower-grade core materials and windings, increasing risk of overheating, nuisance tripping, or premature failure — especially under high-demand conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, needle-nose pliers. Always photograph or label existing wiring before disconnecting. Check for a shorted control wire or failed board that may have caused the original transformer failure before installing the replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits Carrier model \u003cstrong\u003e09DE064600\u003c\/strong\u003e. Cross-references include OEM part numbers 320659-301 and 2-05757-1. Verify primary and secondary voltage on your unit's data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you order — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640126230899,"sku":"CARRIE-09DE064600-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640126263667,"sku":"CARRIE-09DE064600-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_2d5bca85-dd14-4218-84b3-8ef377be5615.jpg?v=1775025870"},{"product_id":"carrier-09de054c900-transformer-h2ut4z","title":"OEM Carrier 40VA Transformer HT01BC208 for 09DE054C900","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC208 for Model 09DE054C900\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified control transformer for the \u003cstrong\u003eCarrier 09DE054C900\u003c\/strong\u003e. It steps line voltage (120V) down to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and all safety controls. When this transformer fails, the entire control system goes dark: the thermostat loses power, the unit won't respond to any call for heating or cooling, and no safety faults can even be reported. A blown transformer is often caused by a wiring short elsewhere in the low-voltage circuit, so always inspect the 24V wiring before installing a replacement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V secondary | 40VA rating | Factory OEM part number HT01BC208 | Carrier-matched for direct fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic transformers frequently underperform on VA capacity, causing nuisance tripping or premature burnout under normal control-circuit loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, wire nuts. Photograph all wiring connections before disconnecting the old transformer. Verify there are no short circuits in the 24V wiring before powering up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for \u003cstrong\u003eCarrier model 09DE054C900\u003c\/strong\u003e. Verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Our team is available to confirm fitment — order with confidence and receive fast, same-day shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640127345011,"sku":"CARRIE-09DE054C900-TRANSFORMER-HT01BC208","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640127377779,"sku":"CARRIE-09DE054C900-TRANSFORMER-HT01BC208-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_6b25c71a-b6c4-4889-9bbb-216970788923.jpg?v=1775016601"},{"product_id":"carrier-09de054c800-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230\/115V for 09DE054C800","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V for Model 09DE054C800\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified control transformer for the \u003cstrong\u003eCarrier 09DE054C800\u003c\/strong\u003e. The transformer steps down line voltage to the lower secondary voltage required to power the unit's control circuit. When this part fails, the entire control circuit goes dead — thermostats won't respond, contactors won't energize, and the system will not operate at all. If your Carrier unit has no 24V control signal and you've already ruled out a tripped breaker, this transformer is the most common cause.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary voltage | 115V secondary voltage | OEM Part Number HT01BC208 | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Totaline\/Carrier OEM part — factory-wound to exact VA and voltage tolerances. Aftermarket transformers often use lower-grade core laminations, resulting in higher heat buildup, shortened service life, and potential nuisance tripping of fuses or breakers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before disconnecting. Verify primary and secondary voltages with your meter after installation before re-energizing the control circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock — ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier 09DE054C800\u003c\/strong\u003e. Also fits Bryant and Payne equipment sharing the same transformer specification. Always verify the VA rating, primary voltage, and secondary voltage on your unit's data plate or wiring diagram before ordering. Have questions about fitment? Our HVAC parts specialists will verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640127541619,"sku":"CARRIE-09DE054C800-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640127574387,"sku":"CARRIE-09DE054C800-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208.jpg?v=1775025842"},{"product_id":"carrier-09de054c510-transformer-h2ut4z","title":"OEM Carrier Transformer 120V–24V 40VA for Model 09DE054C510","description":"\u003ch1\u003eOEM Carrier Transformer 120V\/24V 40VA for Model 09DE054C510\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier 09DE054C510\u003c\/strong\u003e unit. The transformer steps down line voltage from \u003cstrong\u003e120V AC (primary)\u003c\/strong\u003e to \u003cstrong\u003e24V AC (secondary)\u003c\/strong\u003e, powering the entire low-voltage control circuit — including the thermostat, control board, contactor coil, and all safety switches. When this transformer fails, the result is a completely unresponsive system: the thermostat goes blank, the unit won't call for heating or cooling, and the control board loses power entirely. A failed transformer is one of the most common causes of a system that appears completely dead at the stat.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V AC primary | 24V AC secondary | 40VA rated | Single-phase | Factory-matched electrical ratings for the 09DE054C510 control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit from Carrier is wound and rated to exact factory specifications. Generic transformers often carry imprecise VA ratings and thinner windings that overheat under full control-circuit load, leading to premature failure and nuisance tripped breakers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output post-install), wire stripper, and electrical tape or wire nuts. Always confirm transformer polarity and verify no short on the secondary before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier 09DE054C510\u003c\/strong\u003e. Always verify your unit's control circuit voltage and VA draw against your data plate before ordering. If your system uses additional accessories (humidifiers, UV lights, zoning boards) drawing secondary power, confirm the 40VA rating meets your total load. Our fitment team is available to verify compatibility before you order — same-day shipping on all in-stock parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640128590195,"sku":"CARRIE-09DE054C510-TRANSFORMER-HT01BC208","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640128622963,"sku":"CARRIE-09DE054C510-TRANSFORMER-HT01BC208-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_5512ad16-fc16-4b8c-a8bf-0dc8e4a1e0a1.jpg?v=1775041020"},{"product_id":"carrier-09de054c100-transformer-h2ut4z","title":"OEM Carrier Transformer 120V–24V 40VA for Model 09DE054C100","description":"\u003ch1\u003eOEM Carrier Transformer 120V–24V 40VA for Model 09DE054C100\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE054C100\u003c\/strong\u003e. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, control board, and all safety relays. When this component fails, the entire control circuit goes dead: the thermostat loses power, nothing calls for heating or cooling, and the system will not respond at all. A failed transformer is one of the most common causes of a completely unresponsive HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | VA rating: 40VA | OEM part number: HT01BC208 | Factory-matched for Carrier 09DE054C100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer wound to exact factory VA and voltage specifications. Generic transformers often use undersized windings that run hot, trip the built-in thermal fuse prematurely, and fail within one season — costing you more in repeat repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Note wire colors and terminal labels before disconnecting. Installation typically takes 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-matched for Carrier model \u003cstrong\u003e09DE054C100\u003c\/strong\u003e. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating on the unit's data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640128786803,"sku":"CARRIE-09DE054C100-TRANSFORMER-HT01BC208","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640128819571,"sku":"CARRIE-09DE054C100-TRANSFORMER-HT01BC208-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_32e8a89d-2af8-46cf-a67d-d6f82c2dc478.jpg?v=1775041017"},{"product_id":"carrier-09de054600-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V\/115V for 09DE054600","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V for Model 09DE054600\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE054600\u003c\/strong\u003e. The transformer steps down the unit's line voltage to the control circuit voltage required to power the thermostat, control board, and low-voltage accessories. When this transformer fails, you'll typically see a completely unresponsive system — no thermostat display, no blower activation, and no response to any thermostat input. A failed transformer is often the result of a short in the low-voltage wiring or an overloaded secondary circuit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary voltage | 115V secondary voltage | Totaline OEM factory part | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Totaline OEM transformer, wound to exact factory VA and voltage specifications. Aftermarket units frequently fall short of rated VA capacity, causing nuisance trips and premature failure under normal HVAC load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify output voltage post-install). Photograph all wiring connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier 09DE054600\u003c\/strong\u003e. Always verify transformer VA rating and primary\/secondary voltages against your unit's wiring diagram or data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640129737075,"sku":"CARRIE-09DE054600-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640129769843,"sku":"CARRIE-09DE054600-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_b3e7dd79-acff-439e-871e-b8cd80fbb4ff.jpg?v=1775025862"},{"product_id":"carrier-09de054510-transformer-h2ut4z","title":"OEM Carrier 40VA Transformer 230\/115V HT01BC208 for 09DE054510","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 230\/115V for Model 09DE054510\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE054510\u003c\/strong\u003e HVAC system. The transformer steps down line voltage (230V or 115V primary) to the 24V AC signal that powers your thermostat, control board, contactor coil, and every other low-voltage component in the system. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to calls for heating or cooling, and no safety safeties can operate. It is often the first part to check when absolutely nothing works.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA output | 230V \/ 115V dual-tap primary | 24V AC secondary | 60 Hz | Factory OEM tolerance — matches original wire terminals and mounting footprint exactly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to Carrier's exact VA rating and insulation class. Undersized or off-brand units can overheat, trip thermal cutouts repeatedly, or fail prematurely — leaving you with the same no-power symptom within one season.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and verify with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wire connections before disconnecting. Confirm primary tap (115V or 230V) matches your supply voltage before reinstalling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003e09DE054510\u003c\/strong\u003e. Cross-references include OEM part numbers 320659-301 and 2-05757-1. Always verify primary voltage tap requirements on your unit's data plate before ordering. Not sure it fits? Contact our parts team — we confirm fitment before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640130392435,"sku":"CARRIE-09DE054510-TRANSFORMER-HT01BC208","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640130425203,"sku":"CARRIE-09DE054510-TRANSFORMER-HT01BC208-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_9c62ee04-9c29-4409-83cb-4e8a28a99950.jpg?v=1775016455"},{"product_id":"carrier-09de044c800-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230\/115V — 09DE044C800","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V for Model 09DE044C800\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE044C800\u003c\/strong\u003e. The transformer steps down line voltage to power the low-voltage control circuit that operates your thermostat, relays, and safety controls. When this transformer fails, the entire control circuit goes dead — your system will not respond to any thermostat input, and no heating or cooling operation will occur whatsoever.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 230V primary input | 115V secondary output | 50\/60 Hz | OEM part number HT01BC208 | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Totaline\/Carrier OEM transformer built to exact factory VA and voltage specifications. Aftermarket units often fall short on VA rating, causing nuisance tripping of internal breakers and premature failure under normal HVAC load cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before removal. Verify primary and secondary voltage wires are correctly terminated before restoring power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003e09DE044C800\u003c\/strong\u003e. Also fits select Bryant and Payne units sharing the same transformer spec. Always confirm primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — reach out before you buy for total peace of mind.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640130982259,"sku":"CARRIE-09DE044C800-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640131015027,"sku":"CARRIE-09DE044C800-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_0aac5516-0f32-4fcc-8a01-6d7a65f5aaa1.jpg?v=1775025845"},{"product_id":"carrier-09de044c510-transformer-h2ut4z","title":"OEM Carrier 40VA Transformer 230V\/115V for Model 09DE044C510","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC208 for Model 09DE044C510\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier control transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e), factory-specified for the \u003cstrong\u003eCarrier 09DE044C510\u003c\/strong\u003e unit. The transformer steps down line voltage to power the low-voltage control circuit that operates your thermostat, contactor coil, and safety controls. When this transformer fails, the entire control circuit goes dead — your system will appear completely unresponsive, with no thermostat display, no contactor pull-in, and no response to any call for heating or cooling.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary voltage | 115V secondary voltage | 50\/60 Hz | Totaline\/Carrier OEM build quality | Part No. HT01BC208 (cross-references: 320659-301, 2-05757-1)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory-matched OEM transformer, wound to exact Carrier tolerances. Generic transformers often carry an inferior VA rating or substandard core lamination, leading to overheating and premature failure under full control-circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the breaker before beginning. Photograph all wiring connections prior to disconnecting the old transformer. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify output voltage post-install). Most experienced DIYers complete this repair in under 30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Verified direct fit for Carrier model \u003cstrong\u003e09DE044C510\u003c\/strong\u003e. Cross-references OEM part numbers 320659-301 and 2-05757-1. Always confirm primary and secondary voltage ratings on your unit's data plate before ordering. Need fitment assistance? Our HVAC parts specialists verify compatibility before you buy — order with confidence and get same-day shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640132063603,"sku":"CARRIE-09DE044C510-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640132096371,"sku":"CARRIE-09DE044C510-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_ea60b95a-7360-462c-925e-8a36c0b2ea14.jpg?v=1775016458"},{"product_id":"carrier-09de044800-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V for 09DE044800","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V — HT01BC208 for Model 09DE044800\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified step-down replacement for the \u003cstrong\u003eCarrier 09DE044800\u003c\/strong\u003e. The transformer steps down line voltage from 230V primary to 115V secondary at a \u003cstrong\u003e40VA\u003c\/strong\u003e rating, powering the low-voltage control circuit that operates the thermostat, relays, and safety switches throughout the system. When the transformer fails, the entire control circuit loses power — resulting in a completely unresponsive system, a tripped breaker, or a blown fuse on the secondary side.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary | 115V secondary | 50\/60 Hz | OEM part number HT01BC208 | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Totaline\/Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic substitutes often fall outside ±5% tolerance, risking nuisance trips and premature board damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Always disconnect power at the disconnect switch and breaker before servicing. Tools needed: multimeter, flathead and Phillips screwdrivers, wire nuts or terminals. Test secondary voltage output after install before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Directly fits \u003cstrong\u003eCarrier model 09DE044800\u003c\/strong\u003e. Verify your unit's data plate primary voltage and VA requirements before ordering. Our fitment team is available to confirm compatibility before you buy — in stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640132718963,"sku":"CARRIE-09DE044800-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640132751731,"sku":"CARRIE-09DE044800-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_8f4384a8-87e9-4033-a238-c6fbe6262e06.jpg?v=1775025852"},{"product_id":"carrier-09de044100-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V for 09DE044100","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V — HT01BC208 for Model 09DE044100\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified control transformer for the \u003cstrong\u003eCarrier 09DE044100\u003c\/strong\u003e. The transformer steps down the primary supply voltage to the 24V secondary signal that powers your thermostat, control board, contactors, and every other low-voltage component in the system. When this transformer fails, the entire control circuit goes dead — the thermostat loses power, nothing responds to a call for heating or cooling, and the system appears completely inoperative.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary input | 115V secondary output | 50\/60 Hz | OEM Part # HT01BC208 | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer meeting exact factory VA and voltage tolerances. Generic transformers often run under-rated VA, causing overheating, nuisance tripping of the built-in fuse, and premature control board damage — always choose OEM for a long-term fix.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before starting. Label and photograph all low-voltage wiring before disconnecting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to confirm 24V output after installation. Check for a shorted low-voltage wire (common transformer killer) before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse stock.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier 09DE044100\u003c\/strong\u003e. Verify your unit's data plate primary voltage and VA requirement match HT01BC208 specifications before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640134029683,"sku":"CARRIE-09DE044100-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640134062451,"sku":"CARRIE-09DE044100-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_7838d4fb-5ae3-4c36-8a14-3fc08c1f9f21.jpg?v=1775025850"},{"product_id":"carrier-yac60140yacx401ac-transformer-fnyqxl","title":"OEM Carrier Transformer 40VA 120V→24V for YAC60140YACX401AC","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model YAC60140YACX401AC\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for \u003cstrong\u003eCarrier YAC60140YACX401AC\u003c\/strong\u003e systems. The transformer converts 120V line voltage down to 24V to power the low-voltage control circuit — including the thermostat, contactors, and all 24V control board signals. When it fails, the entire control circuit goes dead: the thermostat loses power, the system won't respond to calls for heating or cooling, and no safety fuses are tripped. A failed transformer is one of the most commonly misdiagnosed HVAC faults.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V secondary | 40VA rating | Class 2 transformer | Factory-matched OEM tolerances for reliable low-voltage control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound and rated to exact Carrier factory specifications, ensuring stable 24V output under full control-circuit load. Generic transformers often have looser VA tolerances, risking brownout conditions that can cause nuisance lockouts or board damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Turn off power at the breaker and confirm zero voltage with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, wire strippers, multimeter, wire nuts or spade connectors. Photograph all wiring connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003eYAC60140YACX401AC\u003c\/strong\u003e. Always verify primary voltage (120V), secondary voltage (24V), and VA rating on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you place your order — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640182722931,"sku":"CARRIE-YAC60140YACX401AC-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640182755699,"sku":"CARRIE-YAC60140YACX401AC-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_2a623a06-ca31-4f4d-9f27-d33d1655902b.jpg?v=1775041478"},{"product_id":"carrier-yac60140yacx202at-transformer-fnyqxl","title":"OEM Carrier 50VA Transformer 120\/240-24V for YAC60140YACX202AT","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer P201-35150 for Model YAC60140YACX202AT\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier replacement transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) factory-specified for the \u003cstrong\u003eCarrier YAC60140YACX202AT\u003c\/strong\u003e system. The control transformer steps high-voltage line power (120\/208\/240 VAC) down to safe low-voltage output (12\/24 VAC) to energize your system's control board, thermostat circuit, and all low-voltage control devices. When the transformer fails, the entire control circuit loses power — nothing responds, the thermostat goes blank, and the system becomes completely unresponsive. This is one of the most critical components in your HVAC system's electrical architecture.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary voltage: 120\/208\/240 VAC | Secondary voltage: 12\/24 VAC | 60 Hz | Single phase | CSA listed | Factory OEM part number P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier factory-authorized part (Totaline\/Carrier Replacement Components Division), meeting exact VA, voltage, and frequency tolerances. Off-brand transformers frequently run outside rated VA capacity, causing control board brownouts, nuisance tripping, or premature board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label all low-voltage wires before removal. Verify phasing on multi-tap primary before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the factory replacement transformer for the \u003cstrong\u003eCarrier YAC60140YACX202AT\u003c\/strong\u003e. Always confirm your unit's data plate primary voltage configuration (120V, 208V, or 240V) before wiring the primary tap. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — reach out today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640182919539,"sku":"CARRIE-YAC60140YACX202AT-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640182952307,"sku":"CARRIE-YAC60140YACX202AT-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_d0e482bb-4198-466e-ad7e-c6b1a5273ef6.jpg?v=1775016700"},{"product_id":"carrier-yac48140yac303t-transformer-fnyqxl","title":"OEM Carrier 40VA Transformer 24V Control Circuit — YAC48140YAC303T","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model YAC48140YAC303T\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eCarrier YAC48140YAC303T\u003c\/strong\u003e packaged unit. It converts 120V (or 208\/240V depending on configuration) line voltage to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage switching logic. When the transformer fails, the entire control circuit goes dark — the thermostat becomes unresponsive, the unit will not start, and no error codes will display because the board itself has lost power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 24V secondary output | Factory-matched impedance and VA capacity | Direct OEM drop-in replacement for P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact factory VA ratings and insulation class, ensuring the secondary voltage stays stable under full control-circuit load. Generic units are often underrated, leading to voltage sag that causes erratic contactor chatter and nuisance lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before servicing. Tools needed: multimeter, flathead and Phillips screwdrivers, wire stripper, needle-nose pliers. Always verify 0V at primary terminals with a meter before handling. Label all control wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for Carrier model \u003cstrong\u003eYAC48140YAC303T\u003c\/strong\u003e packaged units. Confirm your existing transformer's VA rating and primary voltage on the unit data plate before ordering. If your secondary output reads below 22V under load, transformer replacement is indicated. Need fitment help? Our HVAC parts specialists confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640186229107,"sku":"CARRIE-YAC48140YAC303T-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640186261875,"sku":"CARRIE-YAC48140YAC303T-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_10c38228-f937-40c3-9db5-640afd58f095.jpg?v=1775016490"},{"product_id":"carrier-yac48140yac203t-transformer-fnyqxl","title":"OEM Carrier 40VA Transformer 24V Control for YAC48140YAC203T","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model YAC48140YAC203T\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC48140YAC203T\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal voltage required to power the thermostat, control board, and all low-voltage safety and switching circuits throughout the unit. When this transformer fails, the entire control circuit goes dead — the thermostat loses power, contactors won't pull in, and the system will not respond to any call for heating or cooling. A failed transformer is often misdiagnosed as a bad control board, making correct identification of this part critical before replacing more expensive components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | Rating: 40VA | OEM Part Number: P201-35150 | Factory-matched to Carrier YAC48140YAC203T electrical specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound and potted to exact factory VA and voltage tolerances. Undersized or off-spec generic transformers can overheat, blow fuses repeatedly, and damage sensitive control boards — costing far more than the price difference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, and wire nuts. Label and photograph all low-voltage wiring before removing the old unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier YAC48140YAC203T\u003c\/strong\u003e packaged unit. Confirm input voltage and VA rating on your unit's data plate before ordering. If you need help verifying fitment, our HVAC parts specialists are available to confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640186425715,"sku":"CARRIE-YAC48140YAC203T-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640186458483,"sku":"CARRIE-YAC48140YAC203T-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_d8a70271-1f86-4023-8468-ab73cdc129e2.jpg?v=1775016496"},{"product_id":"carrier-yac48110yacx404ac-transformer-fnyqxl","title":"OEM Carrier 50VA Transformer 120\/240-24V P201-35150 — YAC48110YACX404A","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer P201-35150 for Model YAC48110YACX404AC\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM replacement control transformer for the \u003cstrong\u003eCarrier YAC48110YACX404AC\u003c\/strong\u003e packaged unit. The transformer steps down incoming line voltage (120\/208\/240 VAC) to a safe 12\/24 VAC to power your system's control board, thermostat, and all low-voltage circuits. When this transformer fails, the entire control circuit loses power — resulting in a completely unresponsive thermostat, a system that won't turn on, or a board that won't communicate. Replacing this part with the correct OEM unit restores proper voltage regulation and protects your system's sensitive electronics.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary voltage: 120\/208\/240 VAC | Secondary voltage: 12\/24 VAC | 60 Hz single-phase | CSA listed | Totaline\/Carrier OEM part number P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory-authorized OEM transformer is wound to exact VA and voltage tolerances for the YAC48110YACX404AC. Generic transformers may deviate in VA capacity, causing control board brownouts, nuisance lockouts, or premature board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label all low-voltage wires before disconnecting. Typical swap time: 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for Carrier model \u003cstrong\u003eYAC48110YACX404AC\u003c\/strong\u003e. Cross-references Totaline P201-35150 and is the factory-specified 50VA transformer for this unit. Always verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering. Our team is available to confirm fitment — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640187474291,"sku":"CARRIE-YAC48110YACX404AC-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640187507059,"sku":"CARRIE-YAC48110YACX404AC-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_debdef68-7c1f-46fc-8c83-6140a2215600.jpg?v=1775016702"},{"product_id":"carrier-yac48110yacx204ac-transformer-fnyqxl","title":"OEM Carrier Transformer 40VA 120V\/24V for YAC48110YACX204AC","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model YAC48110YACX204AC\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier YAC48110YACX204AC\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V AC signal required by your thermostat, control board, and all low-voltage system components. When this part fails, the entire control circuit goes dark — the thermostat loses power, the system will not respond to any call for heating or cooling, and no low-voltage components will operate. A failed transformer is one of the most common causes of a completely unresponsive HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 transformer | Direct OEM factory replacement for P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound and insulated to Carrier's exact VA rating and thermal protection specs. Generic transformers often underrate true VA capacity, leading to premature burnout under normal system load — especially when multiple zones or accessories draw simultaneous current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph all wiring connections before disconnecting the old transformer. Confirm fuse integrity on the 24V circuit before condemning the transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for Carrier model \u003cstrong\u003eYAC48110YACX204AC\u003c\/strong\u003e. Always verify OEM part number P201-35150 against your unit's data plate and wiring diagram before ordering. Our fitment team is available to confirm compatibility — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640188621171,"sku":"CARRIE-YAC48110YACX204AC-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640188653939,"sku":"CARRIE-YAC48110YACX204AC-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_0b44fa14-8444-4eb3-bb0a-9b2be368e9ba.jpg?v=1775041382"},{"product_id":"carrier-yac48110yac304ac-transformer-fnyqxl","title":"OEM Carrier 40VA Transformer 120V-24V for YAC48110YAC304AC","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V\/24V for Model YAC48110YAC304AC\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for \u003cstrong\u003eCarrier YAC48110YAC304AC\u003c\/strong\u003e packaged units. The transformer steps down 120V line voltage to the 24V AC signal required to power thermostats, contactors, control boards, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — the thermostat loses power, nothing responds to a call for heating or cooling, and fuses may blow repeatedly due to a shorted secondary winding.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | VA rating: 40VA | OEM part number: P201-35150 | Factory-matched windings and insulation class\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and tested to Carrier's exact VA rating and insulation spec. Off-brand units often underperform under sustained 24V load, causing nuisance lockouts or premature secondary burnout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always inspect low-voltage wiring for shorts before replacing — a shorted load will burn out a new transformer just as quickly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eYAC48110YAC304AC\u003c\/strong\u003e. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts team confirms compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640189178227,"sku":"CARRIE-YAC48110YAC304AC-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640189210995,"sku":"CARRIE-YAC48110YAC304AC-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_f1e66f01-c2d6-4c09-8ae7-e065af489c41.jpg?v=1775016298"},{"product_id":"carrier-yac48110yac203at-transformer-fnyqxl","title":"OEM Carrier Control Transformer 50VA 120\/240-24V — YAC48110YAC203AT","description":"\u003ch1\u003eOEM Carrier Control Transformer 50VA 120\/208\/240V–24V for Model YAC48110YAC203AT\u003c\/h1\u003e\u003cp\u003eThe \u003cstrong\u003eCarrier P201-35150\u003c\/strong\u003e is the factory-specified step-down control transformer for the \u003cstrong\u003eYAC48110YAC203AT\u003c\/strong\u003e packaged unit. Its job is to reduce incoming line voltage — 120, 208, or 240 VAC — down to a safe 24V for the low-voltage control circuit, powering the thermostat, control board, contactor coil, and all system safeties. When this transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system won't respond to any calls, and absolutely nothing turns on. If your unit has blown a 3A fuse on the board repeatedly, a shorted transformer is the most common cause.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary: 120 \/ 208 \/ 240 VAC multi-tap | Secondary: 12 \/ 24 VAC | 60 Hz single phase | CSA listed | Dimensions: 3.8\"L × 3.1\"W × 2.2\"H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM Carrier\/Totaline unit is wound to exact factory VA and voltage tolerances. Under-rated generic transformers run hot, trip on thermal overload, and shorten control board life — the savings aren't worth it on a 50VA part.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Line voltage is present. Always shut off power at the disconnect AND the breaker before servicing. Tools needed: multimeter (verify 0V before touching wires), 1\/4\" nut driver, needle-nose pliers. Label all wires before disconnecting. Secondary wires (24V side) connect to C and R on the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eYAC48110YAC203AT\u003c\/strong\u003e. Part number P201-35150 is a Carrier\/Totaline Factory Authorized Part. Confirm your unit's data plate lists a 50VA, 120\/208\/240V primary transformer before ordering. Need fitment verification? Our team confirms compatibility before you buy — no guesswork.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640191013235,"sku":"CARRIE-YAC48110YAC203AT-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640191046003,"sku":"CARRIE-YAC48110YAC203AT-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_7e0f8647-6b2a-49fb-ad7d-e4b67feba607.jpg?v=1775025893"},{"product_id":"carrier-yac3680yac407c-transformer-fnyqxl","title":"OEM Carrier 50VA Transformer 120\/240–24V P201-35150 for YAC3680YAC407C","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer P201-35150 for Model YAC3680YAC407C\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC3680YAC407C\u003c\/strong\u003e HVAC unit. It converts high-voltage line power (120\/208\/240 VAC) down to safe 12\/24 VAC to energize the control board, thermostat wiring, and all low-voltage system circuits. When this transformer fails, the entire control circuit goes dark — the thermostat becomes unresponsive, the system will not start, and no call for heating or cooling can be processed. Replacing a failed transformer is one of the most impactful single-part repairs you can make to restore full system operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary: 120\/208\/240 VAC | Secondary: 12\/24 VAC | 60 Hz single-phase | CSA listed | Part # P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier\/Totaline factory-authorized transformer built to exact VA and voltage tolerances. Generic transformers often deviate in VA rating, causing nuisance tripping, control board undervoltage faults, or premature burnout of downstream components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires shutting off power at the disconnect and breaker before work begins. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wiring before disconnecting. Confirm primary voltage tap matches your supply voltage (120V or 240V).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eYAC3680YAC407C\u003c\/strong\u003e. Also cross-references Totaline P201-35150. Verify your existing transformer's VA rating and primary voltage configuration on the data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before every order — contact us today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640194388339,"sku":"CARRIE-YAC3680YAC407C-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640194421107,"sku":"CARRIE-YAC3680YAC407C-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_f5f06603-466a-41ed-a8d0-08b4eae95ed3.jpg?v=1775016714"},{"product_id":"carrier-yac3680yac308t-transformer-fnyqxl","title":"OEM Carrier 40VA 24V Transformer P201-35150 for YAC3680YAC308T","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer P201-35150 for Model YAC3680YAC308T\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eCarrier YAC3680YAC308T\u003c\/strong\u003e HVAC system. The transformer converts 120V line voltage down to the 24V AC signal that powers your entire control circuit — including the thermostat, contactor coil, and control board logic. When this part fails, the system goes completely silent: the thermostat displays nothing, the unit refuses to respond to any call for heating or cooling, and no diagnostic codes can be retrieved because the low-voltage circuit is dead.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary input | 24V secondary output | 40VA rated | OEM factory-matched replacement | Foot-mount or chassis-mount configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound and rated to exact factory specifications, ensuring proper VA capacity and thermal cutout protection. Generic transformers often underrate VA, causing premature burnout when multiple 24V loads are active simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and breaker before servicing. Tools needed: flat-head and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before removal and verify 24V output with your meter before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier model \u003cstrong\u003eYAC3680YAC308T\u003c\/strong\u003e. Always verify your existing transformer's input voltage, output voltage, and VA rating from the data plate or wiring diagram before ordering. Need help confirming fitment? Our HVAC parts specialists are standing by — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640195338611,"sku":"CARRIE-YAC3680YAC308T-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640195371379,"sku":"CARRIE-YAC3680YAC308T-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_ea010289-0718-4627-a34c-e3abf747ed0e.jpg?v=1775016213"},{"product_id":"carrier-yac3680yac307c-transformer-fnyqxl","title":"OEM Carrier 50VA Transformer 120\/240-24V for YAC3680YAC307C","description":"\u003ch1\u003eOEM Carrier 50VA Control Circuit Transformer for Model YAC3680YAC307C\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement control circuit transformer for the \u003cstrong\u003eCarrier YAC3680YAC307C\u003c\/strong\u003e. The transformer steps down high-voltage line power (120\/208\/240 VAC) to safe low-voltage output (12\/24 VAC) to energize your system's control board, thermostat circuit, and all low-voltage accessories. When this transformer fails, the entire control circuit goes dead — your thermostat will show no response, the system won't call for heating or cooling, and no fault codes will display because the board itself has no power. Replacing the transformer with the correct OEM part restores factory-spec voltage regulation and protects downstream components from over- or under-voltage stress.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50VA rating | Primary voltage: 120\/208\/240 VAC | Secondary voltage: 12\/24 VAC | 60 Hz | Single phase | OEM Part Number: P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier factory part, manufactured to exact VA rating and impedance tolerances. Generic transformers with loose VA tolerances can underpower control boards, causing nuisance lockouts, erratic behavior, or premature board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before removal. Verify primary tap selection matches your supply voltage before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the direct OEM replacement for \u003cstrong\u003eCarrier model YAC3680YAC307C\u003c\/strong\u003e. Verify your unit's supply voltage (120V or 208\/240V) matches the correct primary tap on this transformer before installation. Our parts specialists are available to confirm fitment — contact us before ordering if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640195404147,"sku":"CARRIE-YAC3680YAC307C-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640195436915,"sku":"CARRIE-YAC3680YAC307C-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_028c417b-dabc-4ac9-9965-df461acca302.jpg?v=1775016697"},{"product_id":"carrier-yac3680yac306-transformer-fnyqxl","title":"OEM Carrier Control Transformer 50VA 120\/240V–24V for YAC3680YAC306","description":"\u003ch1\u003eOEM Carrier Control Transformer 50VA 120\/208\/240V–24V for Model YAC3680YAC306\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC3680YAC306\u003c\/strong\u003e HVAC system. Its sole job is to step down high-voltage line power (120\/208\/240 VAC) to the safe 24V AC signal that drives your system's control board, thermostat, and all low-voltage switching circuits. When this transformer fails, the entire control circuit goes dark — nothing responds, the thermostat goes blank, and the system will not start in any mode. Replacing it with the correct OEM unit restores full system communication instantly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50VA rating | Primary: 120\/208\/240 VAC | Secondary: 12\/24 VAC | 60 Hz single-phase | CSA listed | Factory-matched to Carrier tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier\/Totaline factory part (P201-35150), built to exact VA and voltage specifications. Generic transformers can run at reduced VA capacity, causing nuisance tripping of the internal thermal overload — especially under peak control-circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire strippers, multimeter. Label all wiring connections before removal. Confirm secondary voltage reads 24V AC after installation before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty included. Ships same business day from our stocked warehouse — no backorder delays.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Verified fit for Carrier model \u003cstrong\u003eYAC3680YAC306\u003c\/strong\u003e. Always confirm the primary voltage matches your unit's supply voltage (120V or 208\/240V) on the data plate before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640195567987,"sku":"CARRIE-YAC3680YAC306-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640195600755,"sku":"CARRIE-YAC3680YAC306-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_ed03da23-bda4-4f67-b174-2cc98bc4f9d0.jpg?v=1775025896"},{"product_id":"carrier-yac3680yac208t-transformer-fnyqxl","title":"OEM Carrier 50VA Transformer 120\/208\/240-24V for YAC3680YAC208T","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer 120\/208\/240V–12\/24V for Model YAC3680YAC208T\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-replacement control transformer (Part# P201-35150) for the \u003cstrong\u003eCarrier YAC3680YAC208T\u003c\/strong\u003e unit. The transformer steps down high-voltage line power — 120, 208, or 240 VAC — to the low-voltage 12\/24V AC signal that powers your system's control board, thermostat, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and circuit breakers may trip if the secondary is shorted. Replacing the transformer with the correct OEM part restores full system communication and protects downstream components from voltage irregularities.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50VA rating | Primary: 120\/208\/240 VAC | Secondary: 12\/24V AC | Single-phase | 60 Hz | Factory-matched Carrier\/Totaline specification (P201-35150)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-tolerance generic units can overload, overheat, and damage control boards — the most expensive component in the system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper, and needle-nose pliers. Label all low-voltage wires before removing the old unit. Verify 24V output at secondary terminals with a multimeter before buttoning up the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our stocked warehouse — no back-order delays.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the OEM replacement for \u003cstrong\u003eCarrier YAC3680YAC208T\u003c\/strong\u003e HVAC equipment. Always verify your unit's data plate voltage requirements match the 120\/208\/240V primary and 12\/24V secondary specifications before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640195633523,"sku":"CARRIE-YAC3680YAC208T-TRANSFORMER-P201-35150","price":135.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640195666291,"sku":"CARRIE-YAC3680YAC208T-TRANSFORMER-P201-35150-GEN","price":118.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_03f3200b-2fca-4fe0-82cc-50c1eee20390.jpg?v=1775016689"},{"product_id":"carrier-yac36100yac307-transformer-fnyqxl","title":"OEM Carrier Transformer 40VA 120V\/24V for YAC36100YAC307","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer P201-35150 for Model YAC36100YAC307\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC36100YAC307\u003c\/strong\u003e condensing unit. The transformer steps down 120V line voltage to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, the entire system goes dark: the thermostat loses communication, the contactor won't energize, and nothing responds. A failed transformer is one of the most common causes of a completely unresponsive HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary → 24V secondary | OEM factory-matched impedance and thermal protection | Designed for Carrier YAC36100YAC307 control circuit requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM P201-35150 transformer is wound and rated to Carrier's exact VA and voltage tolerance specifications. Generic transformers may be under-rated in VA, causing overheating, nuisance tripping, or premature failure under full control-circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, needle-nose pliers. Always label or photograph existing wire connections before removing the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed by 3 PM local time ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eYAC36100YAC307\u003c\/strong\u003e condensing unit. Verify your unit's control voltage and VA requirements on the data plate inside the access panel before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you purchase — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640197599603,"sku":"CARRIE-YAC36100YAC307-TRANSFORMER-P201-35150","price":35.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640197632371,"sku":"CARRIE-YAC36100YAC307-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_1b6592e4-bf82-4964-aa82-486b0e8a7c99.jpg?v=1775041379"},{"product_id":"carrier-yac36100yac306-transformer-fnyqxl","title":"OEM Carrier Transformer 40VA 120V\/24V for YAC36100YAC306","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer P201-35150 for Model YAC36100YAC306\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier YAC36100YAC306\u003c\/strong\u003e air conditioning unit. The transformer steps down line voltage (120V) to the 24V low-voltage signal used by the thermostat, contactor coil, and all control board logic. When this part fails, the entire control circuit goes dead — the thermostat shows no response, the system will not energize, and no error codes will appear because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Factory-matched OEM winding tolerances | Compact footprint for direct drop-in fitment on Carrier YAC36100YAC306\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers maintain precise VA ratings and winding insulation class. Generic or off-brand units often under-rate their VA capacity, causing premature thermal cutout and repeat failures — especially under high-demand multi-zone control loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker and disconnect the low-voltage wiring harness before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph all wiring connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for \u003cstrong\u003eCarrier model YAC36100YAC306\u003c\/strong\u003e. Always verify your unit's data plate voltage ratings match (120V primary \/ 24V secondary, 40VA) before ordering. Our fitment team is available to confirm compatibility — contact us before you buy if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640200221043,"sku":"CARRIE-YAC36100YAC306-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640200253811,"sku":"CARRIE-YAC36100YAC306-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_85afa94c-186f-467d-8a1f-05d1eabecff5.jpg?v=1775041376"},{"product_id":"carrier-yac36100yac304-transformer-fnyqxl","title":"OEM Carrier 50VA Transformer 120\/240-24V for YAC36100YAC304","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer 120\/240V–24V for Model YAC36100YAC304\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC36100YAC304\u003c\/strong\u003e unit. The transformer is the heartbeat of your system's low-voltage control circuit — it steps down incoming line voltage (120\/208\/240 VAC) to the safe 12\/24 VAC level required by the control board, thermostat, and all low-voltage accessories. When this transformer fails, the entire control circuit goes dark: the thermostat becomes unresponsive, the system won't call for heating or cooling, and nothing works — even though the unit may have full line voltage present.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50VA rating | Primary voltage: 120\/208\/240 VAC | Secondary voltage: 12\/24 VAC | 60 Hz single-phase | Factory-matched to Carrier YAC36100YAC304 specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine OEM Carrier part sourced through authorized channels. Generic transformers frequently deviate in VA rating, secondary voltage tolerance, and thermal protection design — risking nuisance trips or board damage on sensitive Carrier control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off all power (both line voltage and control voltage) before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. Verify secondary voltage output with a multimeter before reassembling the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement transformer for the \u003cstrong\u003eCarrier YAC36100YAC304\u003c\/strong\u003e. Confirm your unit's data plate shows a 50VA transformer with 120\/208\/240V primary and 12\/24V secondary before ordering. Our parts specialists are available to verify fitment — reach out before you buy for peace of mind. \u003cstrong\u003eOrder today and your part ships same business day.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640201564531,"sku":"CARRIE-YAC36100YAC304-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640201597299,"sku":"CARRIE-YAC36100YAC304-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_4116717f-db31-41b3-b6c7-a8121d6c133a.jpg?v=1775016694"},{"product_id":"carrier-yac36100yac302-transformer-h30299","title":"OEM Carrier Transformer 120V–24V 40VA for YAC36100YAC302","description":"\u003ch1\u003eOEM Carrier Transformer 120V–24V 40VA for Model YAC36100YAC302\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eHT01BD201\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC36100YAC302\u003c\/strong\u003e unit. The transformer converts incoming 120V line voltage down to the 24V signal voltage required to power the entire low-voltage control circuit — including the thermostat, contactor coil, and all safety safeties. When this transformer fails, nothing works: the thermostat goes dark, the system refuses to respond to any calls for heating or cooling, and you may find a blown fuse on the control board caused by a shorted secondary winding.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | VA rating: 40VA | Factory OEM part number: HT01BD201 | Carrier-matched terminals for direct plug-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the exact factory transformer Carrier installs at the production line. OEM units are wound to precise VA tolerances, protecting downstream components. Generic transformers frequently underperform on VA output, causing nuisance lockouts and premature contactor coil burnout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output after install), wire nuts or spade connectors. Label all wiring before disconnecting and verify polarity on the secondary side before powering up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Directly fits Carrier model \u003cstrong\u003eYAC36100YAC302\u003c\/strong\u003e. Always confirm your unit's control board input voltage and VA requirement on the data plate or wiring diagram before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640201695603,"sku":"CARRIE-YAC36100YAC302-TRANSFORMER-HT01BD201","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640201728371,"sku":"CARRIE-YAC36100YAC302-TRANSFORMER-HT01BD201-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD201_dd1908ae-04f7-42b1-89ef-1f4573ad72f9.jpg?v=1775041124"},{"product_id":"carrier-yac36100yac105a-transformer-fnyqxl","title":"OEM Carrier Control Transformer 50VA 120\/240-24V — P201-35150","description":"\u003ch1\u003eOEM Carrier Control Transformer 50VA 120\/240-24V for Model YAC36100YAC105A\u003c\/h1\u003e\u003cp\u003eThis factory OEM control transformer (part # P201-35150) is the direct replacement for the \u003cstrong\u003eCarrier YAC36100YAC105A\u003c\/strong\u003e. The transformer steps down your home's 120\/208\/240V line voltage to a safe 24V AC signal that powers every low-voltage component in the system — including the control board, thermostat, contactor coil, and zone valves. When this transformer fails, the entire control circuit goes dark: your thermostat shows no power, the system refuses to respond to any call for heating or cooling, or the low-voltage fuse blows repeatedly without a clear cause.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary: 120\/208\/240 VAC multi-tap | Secondary: 12\/24 VAC | Single phase | 60 Hz | CSA listed | OEM part # P201-35150 \/ Totaline cross-reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier\/Totaline factory-authorized part, wound to exact VA and voltage tolerances. Off-brand transformers often run under-rated VA, causing premature thermal cutout and repeated low-voltage fuse failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Line voltage (120–240V) is present at the primary terminals. Always shut off power at the breaker and confirm with a meter before handling. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring before disconnecting leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Confirmed fit for Carrier model \u003cstrong\u003eYAC36100YAC105A\u003c\/strong\u003e. Verify your unit's data plate shows a 50VA, 120\/208\/240V primary and 24V secondary requirement before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before every order — call or chat us today and we'll get you the right part fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640207135091,"sku":"CARRIE-YAC36100YAC105A-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640207167859,"sku":"CARRIE-YAC36100YAC105A-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_a600979a-1b74-4ead-b911-0b5d92d68a35.jpg?v=1775025880"},{"product_id":"carrier-yac36100yac104-transformer-fnyqxl","title":"OEM Carrier Control Transformer 50VA 120\/240-24V — P201-35150","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer P201-35150 for Model YAC36100YAC104\u003c\/h1\u003e\u003cp\u003eThis genuine OEM step-down transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC36100YAC104\u003c\/strong\u003e HVAC system. The transformer reduces incoming line voltage (120\/208\/240 VAC) down to a safe 24 VAC to power the low-voltage control circuit — including the thermostat, control board, and all 24V relay coils. When it fails, the entire control circuit goes dark: the thermostat loses power, the system stops responding to calls for heating or cooling, and nothing operates. In some cases a shorted secondary will blow the control-circuit fuse repeatedly until the transformer is replaced.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary: 120\/208\/240 VAC | Secondary: 12\/24 VAC | 60 Hz single-phase | CSA listed | OEM Part # P201-35150 (also sold under Totaline brand)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM P201-35150 is wound to exact VA and voltage tolerances for Carrier control circuits. Generic transformers rated at nominal 50VA frequently run under-tolerance, causing nuisance fuse trips and premature control board failure — especially on systems with high 24V current draw from multiple zone valves or relays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, and spade or ring terminal crimper. Label all wiring connections before removal. Verify secondary output voltage (should read 24–28 VAC) after installation before restoring full system power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Confirmed factory fit for Carrier model \u003cstrong\u003eYAC36100YAC104\u003c\/strong\u003e. This transformer is also cross-referenced under the Totaline parts brand (same Carrier Corporation part). Always verify the primary voltage tap and VA rating on your unit's data plate before ordering to ensure correct fitment. Have a question? Our HVAC parts team confirms fitment before you buy — order with confidence and get it shipped today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640207561075,"sku":"CARRIE-YAC36100YAC104-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640207593843,"sku":"CARRIE-YAC36100YAC104-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_6d68dec4-2b25-4128-9a30-ec3197c7b7ea.jpg?v=1775025883"},{"product_id":"carrier-yac36100yac101-transformer-h30299","title":"OEM Carrier Transformer 120V–24V 40VA for YAC36100YAC101","description":"\u003ch1\u003eOEM Carrier Transformer 120V–24V 40VA for Model YAC36100YAC101\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD201\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier YAC36100YAC101\u003c\/strong\u003e packaged unit. The transformer steps line voltage (120V) down to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this part fails, \u003cem\u003enothing\u003c\/em\u003e responds: the thermostat goes blank, the system won't call for heating or cooling, and diagnostic LEDs on the board may go dark. It is often the first component to check when the entire unit appears dead despite confirmed line voltage at the disconnect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary 120V AC | Secondary 24V AC | 40VA rated | Encapsulated core construction | Compatible with R-410A control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit (HT01BD201) is factory-wound and encapsulated to Carrier's exact VA and voltage tolerance specifications. Generic transformers frequently under-rate their VA output, causing overheating, nuisance tripping, and premature failure — especially under full control-circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before starting. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching wires). Photograph all low-voltage wiring before disconnecting. Swap wire-for-wire and confirm 24V output with a meter before reassembling panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier model YAC36100YAC101\u003c\/strong\u003e packaged units. Verify primary input voltage and VA rating on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment at no charge — just reach out before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640208347507,"sku":"CARRIE-YAC36100YAC101-TRANSFORMER-HT01BD201","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640208380275,"sku":"CARRIE-YAC36100YAC101-TRANSFORMER-HT01BD201-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD201_91b5e94d-e828-4043-935d-b990c051c932.jpg?v=1775041121"},{"product_id":"carrier-yac3080yac506t-transformer-fnyqxl","title":"OEM Carrier Control Transformer 50VA 120\/240-24V — YAC3080YAC506T","description":"\u003ch1\u003eOEM Carrier Control Transformer 50VA 120\/208\/240-12\/24V for Model YAC3080YAC506T\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# P201-35150) is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC3080YAC506T\u003c\/strong\u003e HVAC system. The transformer steps down incoming 120\/208\/240 VAC line voltage to a safe 12\/24 VAC output to power your system's control board, thermostat circuit, and all low-voltage devices. When this transformer fails, the entire control circuit goes dead — you'll see a blank thermostat, no response to calls for heating or cooling, or a tripped low-voltage fuse. Replacing this part restores the full control circuit instantly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50VA rating | Primary: 120\/208\/240 VAC | Secondary: 12\/24 VAC | 60 Hz | Single phase | CSA listed | Totaline\/Carrier factory OEM (P201-35150)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier factory part matched to exact VA rating and voltage taps for the YAC3080YAC506T. Generic transformers often vary in VA capacity and insulation class, risking nuisance tripping or premature failure of downstream control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all wiring connections before disconnecting the old transformer. Verify 24V output with a multimeter before reassembling the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier model YAC3080YAC506T\u003c\/strong\u003e. Verify your existing transformer's primary voltage taps and VA rating on the unit data plate prior to ordering. Our parts specialists are available to confirm fitment before you buy — fast, free, and no guesswork.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640208478579,"sku":"CARRIE-YAC3080YAC506T-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640208511347,"sku":"CARRIE-YAC3080YAC506T-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_d8b4914a-d9ed-4aa3-870d-dfd39d5163a6.jpg?v=1775025891"},{"product_id":"carrier-yac3080yac506c-transformer-fnyqxl","title":"OEM Carrier Control Transformer 50VA 120\/240-24V — YAC3080YAC506C","description":"\u003ch1\u003eOEM Carrier Control Transformer 50VA 120\/240V–24V for Model YAC3080YAC506C\u003c\/h1\u003e\u003cp\u003eThis OEM step-down control transformer (part# \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC3080YAC506C\u003c\/strong\u003e. Its primary function is to reduce incoming line voltage — 120, 208, or 240 VAC — down to a safe 12\/24 VAC to power your system's control board, thermostat circuit, and all low-voltage components. When the transformer fails, the entire control circuit goes dark: the thermostat loses communication, the board becomes unresponsive, and nothing in the system will energize — heat, cool, or fan. A failed transformer is often misdiagnosed as a bad control board, so always verify transformer output with a multimeter before replacing more expensive components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary: 120\/208\/240 VAC | Secondary: 12\/24 VAC | 60 Hz | Single-phase | CSA Listed | Dimensions approx. 3.8\" L × 3.1\" W × 2.2\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier\/Totaline OEM part (P201-35150). OEM transformers are wound and insulated to exact factory VA and voltage tolerances. Undersized or off-spec generic transformers can overheat, trip thermal cutoffs prematurely, and damage downstream control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Photograph all low-voltage wiring connections before disconnecting. Secondary wires typically connect to the R and C terminals on the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eYAC3080YAC506C\u003c\/strong\u003e packaged or commercial HVAC unit. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate or wiring diagram before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640208675187,"sku":"CARRIE-YAC3080YAC506C-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640208707955,"sku":"CARRIE-YAC3080YAC506C-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_6af49815-b26e-4c4f-a05c-03005eb40fa1.jpg?v=1775025888"},{"product_id":"carrier-yac2480yacx106t-transformer-fnyqxl","title":"OEM Carrier 50VA Transformer 120\/240-24V for YAC2480YACX106T","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer 120\/240V–24V for Model YAC2480YACX106T\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM factory-specified control transformer for the \u003cstrong\u003eCarrier YAC2480YACX106T\u003c\/strong\u003e HVAC system. The transformer steps down line voltage (120\/208\/240 VAC) to a safe 12\/24 VAC to power the control board, thermostat, and all low-voltage control circuit components. When this transformer fails, you'll typically experience a completely unresponsive thermostat, no system response to calls for heating or cooling, or tripped low-voltage fuses — because without the 24V signal, the entire control circuit goes dark.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary: 120\/208\/240 VAC | Secondary: 12\/24 VAC | 60 Hz | Single phase | CSA listed | OEM part number P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory-authorized Carrier\/Totaline part engineered to exact VA and voltage tolerances for the YAC2480YACX106T. Generic transformers often run at reduced VA capacity under load, causing nuisance breaker trips and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 0V before touching terminals). Label all wiring before disconnecting. A typical swap takes 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the factory replacement for Carrier model \u003cstrong\u003eYAC2480YACX106T\u003c\/strong\u003e. Always verify your unit's data plate primary voltage (120V or 240V) matches your power supply wiring configuration before ordering. Need fitment confirmation? Our HVAC parts specialists are standing by — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640210575731,"sku":"CARRIE-YAC2480YACX106T-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640210608499,"sku":"CARRIE-YAC2480YACX106T-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_fb855e28-a694-4084-b6f6-aca2c237acb3.jpg?v=1775016691"},{"product_id":"carrier-yac2480yac506t-transformer-fnyqxl","title":"OEM Carrier Control Transformer 50VA 120\/240-24V — P201-35150","description":"\u003ch1\u003eOEM Carrier Control Transformer 50VA 120\/240-24V for Model YAC2480YAC506T (P201-35150)\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM factory-specified control transformer for the \u003cstrong\u003eCarrier YAC2480YAC506T\u003c\/strong\u003e HVAC system. The transformer steps down incoming line voltage — \u003cstrong\u003e120\/208\/240 VAC\u003c\/strong\u003e — to a safe \u003cstrong\u003e24 VAC\u003c\/strong\u003e output that powers the system's control board, thermostat circuit, and all low-voltage switching devices. When this transformer fails, the entire control circuit goes dead: your thermostat displays nothing, the system refuses to respond to any call for heating or cooling, or a fuse repeatedly blows on the control board secondary side.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary voltage: 120\/208\/240 VAC multi-tap | Secondary voltage: 12\/24 VAC | Single phase | 60 Hz | CSA listed | OEM Part # P201-35150 (also cross-references Totaline P201-35150)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier\/Totaline factory-authorized part built to exact VA rating and insulation class. Generic aftermarket transformers frequently ship with mismatched VA ratings or loose terminal connections — causing nuisance fuse failures and voiding equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — \u003cstrong\u003eShut off all power at the breaker before starting.\u003c\/strong\u003e Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching any wire). Label all wiring before disconnecting primary and secondary leads. Confirm correct primary tap for your supply voltage (120V or 240V) before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eYAC2480YAC506T\u003c\/strong\u003e. Always verify your unit's data plate supply voltage matches the transformer primary tap you intend to use (120V or 208\/240V). Cross-reference part number P201-35150 before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — order with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640211624307,"sku":"CARRIE-YAC2480YAC506T-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640211657075,"sku":"CARRIE-YAC2480YAC506T-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_f8dea66b-0547-4f71-8228-d860388baa4e.jpg?v=1775025885"},{"product_id":"carrier-yac2460yacx508t-transformer-fnyqxl","title":"OEM Carrier 40VA Transformer 24V Control Circuit — YAC2460YACX508T","description":"\u003ch1\u003eOEM Carrier 40VA Control Circuit Transformer for Model YAC2460YACX508T\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier YAC2460YACX508T\u003c\/strong\u003e system. The transformer steps line voltage (120V) down to the 24V signal voltage required to power the control board, thermostat, contactor coil, and all low-voltage safety circuits. When this part fails, the entire control circuit goes dead — no thermostat communication, no contactor pull-in, and no system operation of any kind. A failed transformer is often identified by a burned smell, a visibly cracked or melted housing, or confirmed with a multimeter showing 0V on the secondary side.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | Rating: 40VA | OEM Part Number: P201-35150 | Factory-matched for Carrier YAC2460YACX508T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA and voltage specifications. Generic alternatives frequently run outside tolerance, risking control board damage and nuisance blown fuses on the low-voltage circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, multimeter, wire nuts or quick-connects. Label and photograph all wiring before disconnecting. Check and replace the 3A or 5A low-voltage fuse on the control board at the same time — a shorted load is the most common cause of transformer failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-matched for the Carrier model \u003cstrong\u003eYAC2460YACX508T\u003c\/strong\u003e. Always verify input voltage, output voltage, and VA rating against your unit's data plate and wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you order — contact us anytime. \u003cstrong\u003eIn stock — ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640213197171,"sku":"CARRIE-YAC2460YACX508T-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640213229939,"sku":"CARRIE-YAC2460YACX508T-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_5602446d-dd21-49c8-80bf-e1d6e42d2b65.jpg?v=1775016488"},{"product_id":"carrier-yac2460yacx108k-transformer-fnyqxl","title":"OEM Carrier 24V Control Transformer P201-35150 for YAC2460YACX108K","description":"\u003ch1\u003eOEM Carrier 24V Control Transformer P201-35150 for Model YAC2460YACX108K\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified control transformer for the \u003cstrong\u003eCarrier YAC2460YACX108K\u003c\/strong\u003e system. The transformer steps down line voltage (120V) to the 24V AC signal that powers your thermostat, control board, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — your thermostat becomes unresponsive, the system won't start, and no error codes will display because the board itself has no power. A faulty transformer is often misdiagnosed as a bad control board, making part verification critical before replacement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary → 24V secondary | 40VA rated | OEM part number P201-35150 | Factory-matched output voltage for reliable low-voltage circuit performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Generic alternatives can run under-spec VA ratings, causing nuisance trips of the system's internal fuse and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always shut off 120V power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24V output after install). Label all low-voltage wires before disconnecting from secondary terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty coverage. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Directly replaces OEM part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e in the Carrier \u003cstrong\u003eYAC2460YACX108K\u003c\/strong\u003e. Always verify your unit's data plate voltage requirements before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640214016371,"sku":"CARRIE-YAC2460YACX108K-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640214049139,"sku":"CARRIE-YAC2460YACX108K-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_f21319be-8ffa-4cd9-9308-84aeaf745041.jpg?v=1775015789"},{"product_id":"carrier-yac2460yac108k-transformer-fnyqxl","title":"OEM Carrier 24V Control Transformer P201-35150 for YAC2460YAC108K","description":"\u003ch1\u003eOEM Carrier 24V Control Circuit Transformer P201-35150 for Model YAC2460YAC108K\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement control transformer for the \u003cstrong\u003eCarrier YAC2460YAC108K\u003c\/strong\u003e packaged HVAC unit. The transformer steps down line voltage (120V) to the 24V AC signal required by the low-voltage control circuit — powering the thermostat, contactor coils, gas valve, and control board. When it fails, \u003cstrong\u003enothing works\u003c\/strong\u003e: the thermostat goes dead, no call for heat or cooling is processed, and the system will not respond to any inputs. A failed transformer is one of the most commonly misdiagnosed HVAC faults — always verify 24V output at the secondary terminals before replacing boards or other costly components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | Typical VA rating: 40VA | OEM part number: \u003cstrong\u003eP201-35150\u003c\/strong\u003e | Factory-matched for Carrier YAC2460YAC108K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound and rated to exact factory specifications, ensuring proper VA capacity and thermal protection. Generic alternatives may be under-rated in VA, causing overheating, nuisance trips, or premature failure under full control circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper, spade or wire connectors. Verify primary and secondary voltages with a multimeter before and after installation. Always confirm wiring polarity and secure all terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier model YAC2460YAC108K\u003c\/strong\u003e. Always confirm your unit's control voltage and VA requirements on the data plate or wiring diagram before ordering. Need fitment help? Our HVAC parts specialists verify compatibility before you buy — no guesswork.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640214573427,"sku":"CARRIE-YAC2460YAC108K-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640214606195,"sku":"CARRIE-YAC2460YAC108K-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_2e70aa30-6b71-4c6e-82d0-c32e009788e6.jpg?v=1775015787"},{"product_id":"carrier-yac1840yac101k-transformer-fnyqxl","title":"OEM Carrier Transformer 120V–24V 40VA for YAC1840YAC101K","description":"\u003ch1\u003eOEM Carrier Transformer 120V–24V 40VA for Model YAC1840YAC101K\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (Part # \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eCarrier YAC1840YAC101K\u003c\/strong\u003e packaged unit. Its job is critical but simple: it converts 120V line voltage down to 24V to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When the transformer fails, absolutely nothing in the system responds. You'll see a blank thermostat screen, no cooling calls answered, and often a tripped fuse on the secondary side.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | VA Rating: 40VA | OEM Part Number: P201-35150 | Factory-matched insulation class and wire gauge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the exact factory-spec OEM transformer. Generic transformers frequently ship with under-rated VA capacity, causing thermal shutdowns under load and repeat fuse failures within months.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, wire nuts. Always verify 24V output on the secondary terminals before reassembling the control panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eYAC1840YAC101K\u003c\/strong\u003e packaged unit. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. Not sure if this is your part? Our HVAC fitment team is standing by — order with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640216342899,"sku":"CARRIE-YAC1840YAC101K-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640216375667,"sku":"CARRIE-YAC1840YAC101K-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_291e97ca-34c8-437f-b833-1f3c6c0c9294.jpg?v=1775041119"},{"product_id":"carrier-upflow250ua14b-transformer-h3hvc4","title":"OEM Carrier Transformer 40VA 120V–24V for UPFLOW250UA14B","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V to 24V for Model UPFLOW250UA14B\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01CN001) is the factory-specified replacement for the \u003cstrong\u003eCarrier UPFLOW250UA14B\u003c\/strong\u003e upflow gas furnace. The transformer steps down the 120V line voltage to a safe 24V (with a 12V tap) to power your furnace's low-voltage control circuit — including the thermostat, gas valve, and ignition board. When it fails, the entire control circuit goes dark: the thermostat loses power, the system refuses to start, and you may hear a faint buzz or hum from the transformer housing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 12V\/24V secondary | 40VA rated | Factory Authorized Part — direct OEM replacement with no modifications required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances for the UPFLOW250UA14B control board. Undersized or off-tolerance generic units risk nuisance tripping of the internal thermal overload, leaving you with an intermittent no-heat condition that's difficult to diagnose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off power at the breaker and confirm zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label and photograph all low-voltage wiring connections before disconnecting. The transformer mounts in the control compartment with standard screws and uses push-on or screw terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eUPFLOW250UA14B\u003c\/strong\u003e upflow gas furnace. Replaces legacy part numbers HT01BJ115 and 19EA41612. Verify your existing transformer's primary voltage (120V), secondary voltage (24V), and VA rating (40VA) on the data plate before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get your heat back today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640220307827,"sku":"CARRIE-UPFLOW250UA14B-TRANSFORMER-HT01CN001","price":353.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640220340595,"sku":"CARRIE-UPFLOW250UA14B-TRANSFORMER-HT01CN001-GEN","price":311.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01CN001_1d45d62b-ca39-4a70-86b1-8773ccfb7a4b.jpg?v=1775041453"},{"product_id":"carrier-upflow250fau14b-transformer-h3hvc4","title":"OEM Carrier Furnace Transformer 40VA 120V–24V for UPFLOW250FAU14B","description":"\u003ch1\u003eOEM Carrier Furnace Transformer 40VA 120V to 24V — HT01CN001 for Model UPFLOW250FAU14B\u003c\/h1\u003e\u003cp\u003eThe Carrier HT01CN001 is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier UPFLOW250FAU14B\u003c\/strong\u003e upflow gas furnace. This transformer steps down 120V line voltage to a safe 24V (with 12V secondary tap) to power the furnace's entire low-voltage control circuit — including the thermostat, ignition board, gas valve, and all safety switches. When this transformer fails, the entire control system goes dark: the thermostat loses power, the furnace refuses to start, or you may notice a burning smell or audible buzzing at the transformer itself.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V \/ 12V secondary | 40VA rated | Factory-matched OEM tolerances | Part #: HT01CN001 | Replaces legacy part numbers HT01BJ115, 19EA41612, 19EA42612\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier factory part — not a generic substitute. OEM transformers are wound and insulated to exact VA and thermal ratings for the UPFLOW250FAU14B. Undersized or off-spec generic transformers can overload immediately if control wiring has even minor resistance issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off the furnace disconnect and verify zero voltage before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all 24V wiring terminals before disconnecting. The transformer mounts to the blower compartment panel with two screws; primary and secondary leads connect to quick-connect or screw terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for Carrier model \u003cstrong\u003eUPFLOW250FAU14B\u003c\/strong\u003e. Verify your existing transformer's primary voltage (120V), secondary voltage (24V\/12V), and VA rating (40VA) on the unit's data plate or existing transformer label before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640220373363,"sku":"CARRIE-UPFLOW250FAU14B-TRANSFORMER-HT01CN001","price":353.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640220406131,"sku":"CARRIE-UPFLOW250FAU14B-TRANSFORMER-HT01CN001-GEN","price":311.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01CN001_daebe634-cd24-4f0a-b517-d8bfdb1db4fc.jpg?v=1775031865"}],"url":"https:\/\/nationalhvacparts.com\/collections\/electrical.oembed?page=5","provider":"National HVAC Parts","version":"1.0","type":"link"}