{"product_id":"carrier-c50a204051-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V-24V for C50A204051","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD236 for Model C50A204051\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A204051\u003c\/strong\u003e commercial packaged unit. The transformer steps down line voltage (120V) to the 24V AC signal that powers your thermostat, contactor coil, control board, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system won't respond to any calls for heating or cooling, and no safety safeouts can communicate. If you're seeing a completely unresponsive system and line voltage is confirmed at the unit, a failed transformer is one of the first components to test.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD236 | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Carrier's exact VA rating and insulation class. Generic transformers often underrate their VA capacity, causing overheating under full control-circuit load and premature failure — especially on units with multiple zone boards or economizer controls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all wiring before removal. Confirm 24V output after installation before restoring full system power.\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 Designed for the Carrier \u003cstrong\u003eC50A204051\u003c\/strong\u003e commercial rooftop\/packaged unit. Verify your existing transformer's primary and secondary voltage ratings on the data plate before ordering to confirm fitment. Our HVAC parts specialists are available to verify compatibility before you buy — no guesswork required. Order today and receive same-day shipping on in-stock OEM parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909711942003,"sku":"CARRIE-C50A204051-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909711974771,"sku":"CARRIE-C50A204051-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_8940c87f-3914-4a90-b646-57611ccb778c.jpg?v=1782939332","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a204051-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}