{"product_id":"carrier-hgrh50hj441125-transformer-h3025m","title":"OEM Carrier Transformer 40VA 120V\/24V for HGRH50HJ441125","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model HGRH50HJ441125\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eHT01BD242\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier HGRH50HJ441125\u003c\/strong\u003e. The transformer converts 120V line voltage to the 24V signal required to power the entire control circuit — including the thermostat, contactor coil, gas valve, and control board. When this component fails, the system goes completely unresponsive: the thermostat goes blank, nothing energizes, and the unit will not heat or cool. It is often the first component to check when a system appears fully dead despite having line voltage present.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Factory-matched OEM design | Part number HT01BD242 | Built-in thermal overload protection on most configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD242 is wound to exact factory VA and voltage tolerances, ensuring stable 24V output under full control-circuit load. Generic transformers often run underrated VA capacity, causing voltage sag that can trigger nuisance lockouts or damage sensitive control boards over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label and photograph all wire connections before removal. Confirm secondary output reads 24–28V AC after installation before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships 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\u003eHGRH50HJ441125\u003c\/strong\u003e. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909330129267,"sku":"CARRIE-HGRH50HJ441125-TRANSFORMER-HT01BD242","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909330162035,"sku":"CARRIE-HGRH50HJ441125-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_04392ecd-b58f-405d-8b7c-d5d79dd42cd6.jpg?v=1782941632","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hgrh50hj441125-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}