{"product_id":"carrier-c50a203561-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A203561","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model C50A203561\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) designed for the \u003cstrong\u003eCarrier C50A203561\u003c\/strong\u003e commercial packaged unit. The transformer steps down 120V line voltage to 24V to power the entire control circuit — including the thermostat, contactors, gas valve, and control board. When this component fails, the entire control system goes dark: the thermostat loses power, the unit won't respond to calls for heating or cooling, and nothing works. It is one of the first components to check when diagnosing a completely unresponsive system.\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 electrical ratings for the C50A203561 control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage specifications required by Carrier's control board. Undersized or off-tolerance generic transformers can overload under peak demand, blow fuses, or damage downstream control components — making OEM the only recommended choice for commercial equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Verify 120V input and 24V output with a multimeter after installation before restoring full power.\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 Engineered specifically for the Carrier \u003cstrong\u003eC50A203561\u003c\/strong\u003e commercial rooftop\/packaged unit. Verify your unit's control voltage and VA requirements on the data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — ensuring a correct first-time repair.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909712728435,"sku":"CARRIE-C50A203561-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909712761203,"sku":"CARRIE-C50A203561-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_39bef647-9c6b-4208-8d4a-158afb66494f.jpg?v=1782940362","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a203561-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}