{"product_id":"carrier-c4850c50aw03651-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50AW03651 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model C4850C50AW03651\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C4850C50AW03651\u003c\/strong\u003e packaged unit. Its job is to step down line voltage (120V) to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage control functions. When this transformer fails, the entire control circuit goes dead — your thermostat will appear unresponsive, the system will not call for heating or cooling, and in many cases the unit will simply do nothing at all. Replacing a failed transformer is one of the fastest ways to restore full system operation without replacing more expensive downstream components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rating | OEM part number HT01BD236 | Factory-matched to Carrier C4850C50AW03651 control circuit specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer wound to exact factory VA and voltage tolerances. Generic transformers may be under-rated in VA, causing them to overheat under normal HVAC control loads and fail prematurely — or damage connected control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, wire nuts or spade connectors. Photograph existing wiring connections before removing the old transformer. Verify 0V at terminals before touching any wires.\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 NationalHVACParts.com warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-matched for the Carrier \u003cstrong\u003eC4850C50AW03651\u003c\/strong\u003e packaged unit. Verify your existing transformer's input\/output voltage and VA rating on the unit data plate or old transformer label before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — just reach out with your model and serial number. Order today and most in-stock parts ship the same business day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909819552115,"sku":"CARRIE-C4850C50AW03651-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909819584883,"sku":"CARRIE-C4850C50AW03651-TRANSFORMER-HT01BD236-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-HT01BD236_cc2e604c-fd2f-47cb-a423-67e0f75c4116.jpg?v=1782938910","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aw03651-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}