{"product_id":"carrier-c48a302561-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C48A302561 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V to 24V for Model C48A302561\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier C48A302561\u003c\/strong\u003e packaged system. The transformer steps line voltage (120V) down to the 24V signal voltage required to power your thermostat, control board, and all low-voltage safety circuits. When this component fails, the entire control circuit goes dead — the thermostat loses power, the system won't respond to any calls for heating or cooling, and no fault codes are displayed because the board itself has no power to operate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched construction for Carrier packaged systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine OEM Carrier transformer, wound to exact VA and voltage specifications. Generic transformers frequently under-deliver on VA capacity, causing control boards to brown out under full load and shortening the life of connected components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Always verify 0V at primary terminals before handling. Label all low-voltage wiring before disconnecting to ensure correct reassembly.\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 \u003cstrong\u003eCarrier C48A302561\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. If your system exhibits a completely unresponsive thermostat, no LED activity on the control board, or a blown fuse on the low-voltage circuit, this transformer is the most common root cause. Our parts specialists are available to confirm fitment before you order — order with confidence and get back to comfort fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909754769779,"sku":"CARRIE-C48A302561-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909754802547,"sku":"CARRIE-C48A302561-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_6ccf2ded-e6a7-49ac-b789-1727c3483101.jpg?v=1782899319","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a302561-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}