{"product_id":"carrier-c50a205051-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A205051","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model C50A205051\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C50A205051\u003c\/strong\u003e commercial rooftop unit. The transformer steps down line voltage from 120V to the 24V AC signal required to power the control board, thermostat, contactor coil, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dark — the thermostat goes blank, the system produces no response to any call for heating or cooling, and no fault codes can even be generated. It is one of the first components to check when a unit appears completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Class 2 transformer | Direct OEM replacement for part number HT01BD236\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 and thermal specifications. Generic transformers with undersized VA ratings can overheat under full control-circuit load, tripping thermal cutoffs or failing prematurely — always match VA rating precisely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after installation). Label or photograph all low-voltage wiring prior to disconnecting the old transformer.\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 warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC50A205051\u003c\/strong\u003e commercial packaged rooftop unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — reach out before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909710664051,"sku":"CARRIE-C50A205051-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909710696819,"sku":"CARRIE-C50A205051-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_fbdcd62e-c187-4894-89e5-714d5cec6df0.jpg?v=1782940377","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a205051-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}