{"product_id":"carrier-c50a303061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A303061","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A303061\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part# HT01BD236) is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A303061\u003c\/strong\u003e commercial rooftop unit. The transformer steps down 120V line voltage to the 24V AC signal required to power the entire control circuit — including the thermostat, contactor coil, gas valve, and all safety switches. When this component fails, the result is a completely unresponsive system: no thermostat communication, no fan, no heating or cooling. If your unit is dead silent with confirmed line voltage present, 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 | 120V primary input | 24V secondary output | Factory-matched impedance and winding | Compatible with standard HVAC control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers (HT01BD236) are wound to Carrier's exact VA and voltage tolerances, ensuring stable 24V output under full control-circuit load. Generic units may sag under load, causing intermittent lockouts, nuisance tripping, or premature contactor coil failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (verify 0V before touching terminals). Note wiring connections before removal; primary wires connect to 120V supply, secondary wires feed the 24V control board circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier C50A303061\u003c\/strong\u003e commercial packaged rooftop unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Our fitment team is available to confirm compatibility — reach out before you buy if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909702668659,"sku":"CARRIE-C50A303061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909702701427,"sku":"CARRIE-C50A303061-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_0a495d18-831a-4f5b-bcb8-443a095770fc.jpg?v=1782940435","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a303061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}