{"product_id":"carrier-c4850c50zg030600-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Transformer for C4850C50ZG030600 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model C4850C50ZG030600\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (Carrier part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C4850C50ZG030600\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, gas valve, and control board. When this part fails, absolutely nothing in the system responds: the thermostat goes blank, the unit won't call for heating or cooling, and you may measure 0V on the secondary side with a multimeter.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage 120V AC | Secondary voltage 24V AC | 40VA rating | OEM part number HT01BD236 | Factory-matched for Carrier C4850C50ZG030600\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD236 transformer is wound and insulated to Carrier's exact VA rating and thermal protection standards. Generic alternatives may under-rate VA capacity, causing premature burnout under normal HVAC control loads — especially with multi-stage systems drawing simultaneous coil voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper, and wire nuts or push-in connectors. Photograph or label all wiring connections before removal. Verify 0V at primary terminals before handling. Most technicians complete this swap in under 30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock at our warehouse — ships same business day when ordered before 3 PM.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eC4850C50ZG030600\u003c\/strong\u003e packaged unit. Always confirm your unit's data plate and existing transformer VA\/voltage ratings match before ordering — secondary voltage and VA capacity must align with your control board requirements. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order, free of charge. \u003cstrong\u003eOrder today and your part ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909782294899,"sku":"CARRIE-C4850C50ZG030600-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909782327667,"sku":"CARRIE-C4850C50ZG030600-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_331ea6c3-7e97-4cb8-9d49-af4172561583.jpg?v=1782899417","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zg030600-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}