{"product_id":"carrier-c48a403562-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C48A403562 — Ships Today","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C48A403562\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C48A403562\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to 24V to power the entire control circuit — including the thermostat, contactor coil, and control board. When it fails, the thermostat goes blank, the system becomes completely unresponsive, or a downstream short may have burned out the secondary winding. Replaces OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | Compatible with single-stage control circuits | Mounts to standard bracket with screw terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA and voltage tolerances. Undersized or off-spec generic transformers can overheat under full control circuit load, tripping the internal thermal fuse and causing intermittent no-power faults.\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 nuts or terminal connectors. Always verify 0V at primary terminals before touching wiring. Label all leads before disconnecting.\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\u003eC48A403562\u003c\/strong\u003e packaged unit. Cross-references OEM part numbers HT01BD236 and HT01BD702. Verify your unit's control voltage and transformer VA rating on the data plate before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909740745075,"sku":"CARRIE-C48A403562-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909740777843,"sku":"CARRIE-C48A403562-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_f3618d7d-dc4a-455d-b856-7b3c2df1d804.jpg?v=1782939222","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a403562-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}