{"product_id":"carrier-c48a505061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C48A505061","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C48A505061\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eCarrier C48A505061\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to 24V AC to power the entire control circuit — including the thermostat, contactor coil, gas valve, and control board. When this transformer fails, nothing in the control system responds: your thermostat goes blank, the system won't call for heating or cooling, and no safety or control functions operate. It is often the first component to check when an entire unit goes unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary voltage: 120V AC | Secondary voltage: 24V AC | Factory-matched OEM design for Carrier packaged systems | Part number HT01BD236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer meets Carrier's exact VA rating and insulation class requirements. Generic transformers are frequently underrated, causing overheating, nuisance tripping, and premature failure — especially in systems with multiple 24V accessories or zone controls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter for voltage verification. Photograph all wiring connections before disconnecting. Confirm secondary output reads 24V AC after installation before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship 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\u003eC48A505061\u003c\/strong\u003e packaged unit. Verify your existing transformer's primary\/secondary voltage and VA rating against your unit's data plate before ordering. If you are unsure of fitment, our parts specialists will confirm compatibility before your order ships — contact us today and get back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909730062707,"sku":"CARRIE-C48A505061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909730095475,"sku":"CARRIE-C48A505061-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_31db5b81-e243-47ce-ba83-442e8bd084e7.jpg?v=1782940227","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a505061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}