{"product_id":"carrier-c48a406052-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C48A406052 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C48A406052\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) designed specifically for the \u003cstrong\u003eCarrier C48A406052\u003c\/strong\u003e packaged unit. The transformer steps down line voltage from 120V to 24V to power the low-voltage control circuit, including your thermostat, contactor coil, and control board. When this part fails, the entire control system goes dark — you'll see a blank thermostat, no response to calls for heating or cooling, and potentially a tripped low-voltage fuse. It's often the first part to check when nothing works at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary voltage: 120V | Secondary voltage: 24V | OEM part number HT01BD236 | Factory-matched for Carrier C48A406052 packaged units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by Carrier's control board. Generic units can run under-rated VA, causing overheating, nuisance tripping, and premature control board failure — a much more expensive repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring before removal. Verify fuse on secondary side before condemning the transformer.\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 as a direct OEM replacement for the \u003cstrong\u003eCarrier C48A406052\u003c\/strong\u003e packaged unit. Confirm primary and secondary voltage ratings on your existing transformer's data label before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — order with confidence and get back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909737894259,"sku":"CARRIE-C48A406052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909737927027,"sku":"CARRIE-C48A406052-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_e10b4fae-372a-40d6-9e9d-70f921550a01.jpg?v=1782899365","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a406052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}