{"product_id":"carrier-c4850c50z2055900-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50Z2055900 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C4850C50Z2055900\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier C4850C50Z2055900\u003c\/strong\u003e packaged gas\/electric system. The transformer steps down line voltage from 120V to the 24V signal required by your thermostat, contactor coils, gas valve, and all low-voltage control circuits. When this component fails, the entire control system loses power — your thermostat goes blank, nothing responds, and the system will not heat or cool regardless of settings.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Class 2 transformer | Factory-matched OEM part number HT01BD236 | Designed for Carrier packaged unit control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to Carrier's exact VA rating and thermal protection standards. Undersized or off-brand transformers can brown out under load, triggering nuisance lockouts and potentially damaging downstream control boards and contactors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 24V output after install). Label or photograph all low-voltage wiring connections before removing the old unit.\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 climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This transformer is engineered for the \u003cstrong\u003eCarrier C4850C50Z2055900\u003c\/strong\u003e packaged unit. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Our fitment team is available to confirm compatibility — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909801759091,"sku":"CARRIE-C4850C50Z2055900-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909801791859,"sku":"CARRIE-C4850C50Z2055900-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_8c83711e-5021-42bd-a017-bef4d23e5c51.jpg?v=1782939008","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50z2055900-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}