{"product_id":"carrier-c48a402762-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C48A402762 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C48A402762\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C48A402762\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and safety switches. When this component fails, the entire control circuit goes dark: the thermostat display may go blank, the system will not respond to any call for heating or cooling, and no safety or status LEDs will illuminate on the control board. OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e are both factory-authorized replacements for this application.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA output | Primary: 120V AC | Secondary: 24V AC | Color-coded lead wires | Factory-matched to Carrier C48A402762 control circuit requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers use factory-wound cores matched to the exact VA load of your system's control circuit. Undersized or off-spec generic units can overheat, trip thermal cutoffs prematurely, or fail to sustain voltage under full relay load — causing erratic system behavior.\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 (to confirm 24V output after install). Photograph or label all wiring connections before removing the old 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 Designed for the Carrier \u003cstrong\u003eC48A402762\u003c\/strong\u003e packaged unit. Replaces OEM part numbers HT01BD236 and HT01BD702. Confirm primary voltage and VA rating on your unit's data plate before ordering. Not sure it fits? Our parts specialists verify fitment before you buy — reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909743792499,"sku":"CARRIE-C48A402762-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909743825267,"sku":"CARRIE-C48A402762-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_56881871-08c4-4f8d-9e26-1bf711cbb048.jpg?v=1782899356","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a402762-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}