{"product_id":"carrier-hgrh50hj441452-transformer-h30291","title":"OEM Carrier Transformer 40VA 120V\/24V for HGRH50HJ441452","description":"\u003ch1\u003eOEM Carrier 40VA Transformer HT01BD209 for Model HGRH50HJ441452\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier HGRH50HJ441452\u003c\/strong\u003e. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage control circuits. When this component fails, the entire system goes dark — the thermostat loses power, no calls for heat or cooling are processed, and nothing responds. It is often the first component to suspect when a system is completely unresponsive and all other electrical checks pass.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Direct OEM replacement for part number HT01BD209 | Factory-matched output voltage for stable control circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD209 transformer is wound and rated to Carrier's exact factory specification. Generic transformers may carry inconsistent VA ratings or loose voltage tolerances, risking nuisance trips, control board damage, or premature contactor coil failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to verify 24V output after installation. Label or photograph all low-voltage wiring before disconnecting from terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Backed by a 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 Engineered specifically for the \u003cstrong\u003eCarrier HGRH50HJ441452\u003c\/strong\u003e. Always confirm the 40VA rating and 120V\/24V configuration against your unit's data plate or wiring diagram before ordering. Our HVAC parts specialists are available to verify fitment prior to purchase — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909329015155,"sku":"CARRIE-HGRH50HJ441452-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909329047923,"sku":"CARRIE-HGRH50HJ441452-TRANSFORMER-HT01BD209-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-HT01BD209_8534c6b0-2d04-4f6b-8c44-bddd287775bc.jpg?v=1782941642","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hgrh50hj441452-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}