{"product_id":"carrier-c4850c50ak05051-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C4850C50AK05051 — Ships Today","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C4850C50AK05051\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control transformer for the \u003cstrong\u003eCarrier C4850C50AK05051\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage control components. When it fails, nothing responds — the thermostat goes dark, the system won't call for heating or cooling, and no safety sequences can initiate. It is one of the most commonly overlooked failure points in HVAC diagnostics.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers feature factory-wound coils with exact VA ratings and built-in thermal overload protection. Undersized or off-tolerance generic transformers can trip repeatedly under normal load, leaving you chasing a fault that keeps returning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, wire nuts. Confirm 24V output at secondary terminals before reassembling 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 warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC4850C50AK05051\u003c\/strong\u003e packaged unit. Always verify your existing transformer's VA rating, primary voltage, and secondary voltage on the data plate or wiring diagram before ordering to confirm fitment. Our HVAC parts specialists are available to verify compatibility before you buy — no guesswork, no returns.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909826695539,"sku":"CARRIE-C4850C50AK05051-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909826728307,"sku":"CARRIE-C4850C50AK05051-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_9bab9cd5-c879-4919-afed-7889639fd9f6.jpg?v=1782899123","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50ak05051-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}