{"product_id":"carrier-ph3gna030000ab-transformer-h3025m","title":"OEM Carrier Transformer 75VA 208\/240\/480V–24V for PH3GNA030000AB","description":"\u003ch1\u003eOEM Carrier Transformer 75VA 208\/240\/480V to 24VAC for Model PH3GNA030000AB\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01BD242) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier PH3GNA030000AB\u003c\/strong\u003e packaged heat pump unit. It steps down the high-voltage supply (208\/240\/480V primary) to the 24VAC signal voltage that powers your thermostat, contactor coils, control board, and all low-voltage system controls. When this transformer fails, the entire control circuit goes dead — the thermostat loses power, the system won't respond to any calls for heating or cooling, and in many cases a tripped circuit or visible burn on the transformer body is the only clue. Replacing this part with the correct OEM unit restores factory-matched voltage regulation and protects every downstream component in the 24V circuit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 75VA power rating | Primary voltage: 208\/240\/480V multi-tap | Secondary voltage: 24VAC | Frequency: 50\/60Hz | Foot-mount configuration | OEM part #HT01BD242\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact factory VA and voltage tolerances. Undersized or off-tolerance generic units can cause nuisance board lockouts, premature contactor coil failure, or chronic thermostat brownouts — costing far more than the part itself.\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, needle-nose pliers, multimeter (to verify 24VAC output post-install). Always photograph existing wiring before disconnecting. Verify primary tap is set to match your supply voltage 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 before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the \u003cstrong\u003eCarrier PH3GNA030000AB\u003c\/strong\u003e packaged heat pump. This transformer is also used across a wide range of Carrier, Bryant, Payne, Tempstar, Heil, and Comfortmaker equipment sharing the same 75VA, 208\/240\/480V-to-24VAC specification — always verify your unit's data plate and existing transformer label before ordering. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641389404531,"sku":"CARRIE-PH3GNA030000AB-TRANSFORMER-HT01BD242","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641389437299,"sku":"CARRIE-PH3GNA030000AB-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_8d42ac6d-bcc8-4481-832a-adc4a589f72f.jpg?v=1782943265","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3gna030000ab-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}