{"product_id":"carrier-hgrh50hj441042-transformer-h3025m","title":"OEM Carrier Transformer 40VA 120V\/24V for HGRH50HJ441042","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model HGRH50HJ441042\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD242\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier HGRH50HJ441042\u003c\/strong\u003e. The transformer steps down line voltage from 120V to 24V AC to power the entire control circuit — including the thermostat, contactor coil, gas valve, and control board. When the transformer fails, absolutely nothing in the control system responds: the thermostat goes blank, the system won't call for heating or cooling, and you may detect a burned or overheated odor near the air handler or furnace cabinet.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD242 | Factory-matched to Carrier control circuit requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances Carrier specifies. Undersized or off-brand transformers can overheat under combined control loads, blow internal fuses, and damage downstream boards — often costing far more than the transformer itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker and disconnect switch before starting. Tools needed: Phillips and flathead screwdrivers, multimeter, wire nuts or spade connectors. Label or photograph all low-voltage wiring before disconnecting. Replacement 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 Engineered specifically for the \u003cstrong\u003eCarrier HGRH50HJ441042\u003c\/strong\u003e. Verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you buy — zero guesswork, guaranteed correct part.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909330948467,"sku":"CARRIE-HGRH50HJ441042-TRANSFORMER-HT01BD242","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909330981235,"sku":"CARRIE-HGRH50HJ441042-TRANSFORMER-HT01BD242-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-HT01BD242_bdb6f665-078d-4769-ba96-ea38dc7683a0.jpg?v=1782941619","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hgrh50hj441042-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}