{"product_id":"carrier-c50a404061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A404061","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A404061\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# HT01BD236) is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A404061\u003c\/strong\u003e commercial rooftop unit. The transformer steps down 120V line voltage to 24V to power the entire low-voltage control circuit — including the thermostat, contactor coils, 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. A failed transformer is often one of the first things to check when a unit is completely unresponsive.\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 This OEM transformer meets Carrier's exact VA rating and insulation class. Generic replacements often run undersized VA ratings, causing overheating and premature failure — especially in commercial rooftop applications with multiple control loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Verify 24V output with a multimeter after installation before restoring power to the full system.\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.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier C50A404061 commercial packaged rooftop unit. Cross-reference OEM part number HT01BD236 against your unit's wiring diagram or data plate to confirm fitment. If your thermostat shows no power and your breaker is intact, this transformer is your most likely culprit. Order today and get back to comfort fast — our team is available to verify fitment before you purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909681992051,"sku":"CARRIE-C50A404061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909682024819,"sku":"CARRIE-C50A404061-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_e8dd275a-f4cd-4bb3-b18c-830976b2d87a.jpg?v=1782940527","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a404061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}