{"product_id":"carrier-c48a403061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C48A403061 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C48A403061\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control transformer for the \u003cstrong\u003eCarrier C48A403061\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal used by the thermostat, control board, contactor coil, and all low-voltage control components. When this part fails, the entire control circuit goes dead — nothing responds, the thermostat goes blank, and the system will not start in any mode.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 transformer | OEM part number HT01BD236 | Factory-matched output for stable low-voltage signaling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers maintain tight voltage regulation under load, protecting sensitive control boards from brownout conditions. Generic units often have loose VA ratings that can cause intermittent lockouts or premature board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Photograph all wiring connections 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 as a direct OEM replacement for the Carrier \u003cstrong\u003eC48A403061\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Our team is available to confirm fitment — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909743432051,"sku":"CARRIE-C48A403061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909743464819,"sku":"CARRIE-C48A403061-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_414bf40e-239e-42da-8d34-2e467114be66.jpg?v=1782939210","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a403061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}