{"product_id":"carrier-c4850c48zg060200-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Transformer for C4850C48ZG060200 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C4850C48ZG060200\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified 40VA step-down transformer for the \u003cstrong\u003eCarrier C4850C48ZG060200\u003c\/strong\u003e packaged unit. The control transformer converts 120V primary power to the 24V secondary voltage that powers your thermostat, control board, contactor coil, and all low-voltage safety circuits. When it fails, absolutely nothing in the control system responds — the thermostat goes blank, the unit won't call for heating or cooling, and the system appears completely dead despite line voltage being present at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01BD236 | Factory-matched for Carrier C4850C48ZG060200 packaged unit control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to exact VA and voltage tolerances for your unit's control load. Undersized or off-spec generic units overheat, trip internal thermal fuses prematurely, and can damage downstream control boards — making OEM the only safe choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output after install), wire nuts or spade connectors. Photograph existing wiring connections before removal. Test secondary voltage output before closing the panel.\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 climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eC4850C48ZG060200\u003c\/strong\u003e packaged unit. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you purchase — same-day shipping available on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909862969715,"sku":"CARRIE-C4850C48ZG060200-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909863002483,"sku":"CARRIE-C4850C48ZG060200-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_70ff1e8a-0ee1-469a-b313-e85dd1cc7f33.jpg?v=1782899383","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c48zg060200-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}