{"product_id":"carrier-ph4gpaa60000aa-transformer-h3025m","title":"OEM Carrier Transformer 75VA 208\/240\/480V–24V for PH4GPAA60000AA","description":"\u003ch1\u003eOEM Carrier 75VA Control Transformer HT01BD242 for Model PH4GPAA60000AA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM replacement control transformer for the \u003cstrong\u003eCarrier PH4GPAA60000AA\u003c\/strong\u003e packaged heat pump unit. The transformer steps down line voltage (208\/240\/480V primary) to the 24V AC control circuit voltage that powers your thermostat, contactor coil, and all low-voltage control components. When this transformer fails, the entire control circuit goes dark — your thermostat will show no power, the system won't respond to calls for heating or cooling, and no diagnostic codes will appear on the control board. Replacing it restores the full control circuit immediately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 75VA rating | 208\/240\/480V primary input | 24V AC secondary output | 50\/60 Hz | Foot-mount configuration | OEM part number HT01BD242\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory-original Carrier transformer is wound to exact VA and voltage specifications. Undersized or off-tolerance aftermarket transformers can brown out the control circuit under load, causing erratic operation or premature contactor coil failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Line voltage (208–480V) is present at primary terminals; always disconnect power at the disconnect box before servicing. Tools needed: multimeter, flathead and Phillips screwdrivers, wire stripper, needle-nose pliers. Verify secondary output reads 24V AC before reconnecting load wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock orders ship 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\u003ePH4GPAA60000AA\u003c\/strong\u003e packaged heat pump unit. Confirm your unit's primary voltage (208\/240V or 480V) against your data plate before ordering — both voltages are supported by this multi-tap transformer. Questions about fitment? Our HVAC parts specialists verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641224286579,"sku":"CARRIE-PH4GPAA60000AA-TRANSFORMER-HT01BD242","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641224319347,"sku":"CARRIE-PH4GPAA60000AA-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_f9e8ccd1-5d37-4c45-87e4-a351b101d38a.jpg?v=1782943340","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4gpaa60000aa-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}