{"product_id":"carrier-c48a202552-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Transformer for C48A202552 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD236 for Model C48A202552\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C48A202552\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to the 24V signal required to power the control board, thermostat, contactor coil, and all low-voltage switching circuits. When this component fails, the entire control circuit goes dead — your thermostat will show no response, the system will not call for heating or cooling, and no error codes will be generated because there is no power to the board to produce them.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 120V primary \/ 24V secondary | OEM part number HT01BD236 | Factory-matched transformer designed for Carrier packaged unit electrical loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA specifications for the C48A202552 control circuit. Undersized or off-tolerance generic units can overheat under peak switching loads, causing nuisance trips or secondary failures in the contactor coil and control board.\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, wire nuts or spade terminals, multimeter to confirm 24V output after installation. Always label low-voltage wiring before disconnecting from board terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the \u003cstrong\u003eCarrier C48A202552\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering to ensure a correct fit. Our parts specialists are available to confirm fitment prior to purchase — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909762601331,"sku":"CARRIE-C48A202552-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909762634099,"sku":"CARRIE-C48A202552-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_a2bea7fc-01bb-48d6-ba96-069f4a1b94d9.jpg?v=1782899431","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a202552-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}