{"product_id":"carrier-c48a502762-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C48A502762","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C48A502762\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C48A502762\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, the result is total system unresponsiveness: the thermostat goes dark, relays won't energize, and nothing happens on a call for heating or cooling. It is one of the most commonly overlooked failure points in a full system no-start diagnosis.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Replaces OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e | Factory-matched impedance and insulation class\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and rated to Carrier's exact VA load specifications. Generic transformers may be undersized for the full control circuit draw, leading to premature thermal cutout trips or shortened service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Verify incoming voltage before reconnecting. Always label or photograph wiring before removal.\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 Designed for use in the \u003cstrong\u003eCarrier C48A502762\u003c\/strong\u003e packaged unit. Cross-references OEM part numbers HT01BD236 and HT01BD702 — both are direct replacements for this transformer position. Confirm your unit's control voltage requirement (24V) and VA rating on the equipment data plate before ordering. Our parts specialists are available to verify fitment prior to purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909734715763,"sku":"CARRIE-C48A502762-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909734748531,"sku":"CARRIE-C48A502762-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_dc93032e-57b7-40fc-a8f2-d251d34f5fd5.jpg?v=1782940189","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a502762-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}