{"product_id":"carrier-c48a406061-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C48A406061 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model C48A406061\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C48A406061\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, contactor coil, and control board. When it fails, the entire control circuit goes dead — the thermostat goes blank, the system will not respond to any call for heating or cooling, and no components will energize. It is often the first part to check when nothing works at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | 40VA rating | Class 2 transformer | OEM part number HT01BD236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Carrier's exact VA rating and insulation class, ensuring stable 24V output under full load. Generic transformers frequently undervolt the control circuit, causing erratic board behavior and nuisance lockouts.\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 before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting. Primary and secondary leads are color-coded for straightforward reinstallation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty included. Orders placed before cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier C48A406061\u003c\/strong\u003e packaged unit. Always verify your existing transformer's VA rating and voltage markings on the data plate before ordering to ensure a correct fit. Our HVAC parts specialists are available to confirm fitment before you purchase — reach out before you order and we'll verify compatibility for you.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909737632115,"sku":"CARRIE-C48A406061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909737664883,"sku":"CARRIE-C48A406061-TRANSFORMER-HT01BD236-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD236_897c933b-7148-4810-ab13-ac47bc7c7367.jpg?v=1782899367","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a406061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}