{"product_id":"carrier-ph3gna042000ab-transformer-h3025m","title":"OEM Carrier Transformer 75VA 208\/240\/480V–24V for PH3GNA042000AB","description":"\u003ch1\u003eOEM Carrier Control Transformer 75VA 208\/240\/480V to 24VAC for Model PH3GNA042000AB\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01BD242) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH3GNA042000AB\u003c\/strong\u003e packaged heat pump unit. The transformer steps down high-voltage line power (208\/240\/480V) to the 24VAC signal used by your thermostat, control board, contactor coil, and every other low-voltage component in the system. When this part fails, the entire control circuit goes dark — the thermostat loses communication, the system will not respond to any call for heating or cooling, and no components will energize.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 75VA power rating | 208\/240\/480V primary input | 24VAC secondary output | 50\/60Hz | Foot-mount configuration | OEM part #HT01BD242\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 with loose tolerances can under-deliver voltage to the control circuit, causing erratic system behavior, nuisance lockouts, and accelerated contactor coil wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect all power and verify zero voltage before beginning. Tools needed: multimeter, flathead and Phillips screwdrivers, wire stripper\/crimper, needle-nose pliers. Label all wiring harness connections before removal. Foot-mount bracket must be properly secured to the unit's chassis before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered by 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Verified fit for Carrier model \u003cstrong\u003ePH3GNA042000AB\u003c\/strong\u003e packaged heat pump unit. This transformer also serves across Carrier's broader packaged unit and RTU lineup — always confirm primary voltage (208\/240\/480V) and VA rating (75VA) match your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641379967347,"sku":"CARRIE-PH3GNA042000AB-TRANSFORMER-HT01BD242","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641380000115,"sku":"CARRIE-PH3GNA042000AB-TRANSFORMER-HT01BD242-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD242_e4a1e1b3-2678-477f-95f6-a93c4252dabf.jpg?v=1782943268","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3gna042000ab-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}