{"product_id":"carrier-c48a203061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C48A203061 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C48A203061\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 C48A203061\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage control circuitry. When this component fails, the entire control system goes dark — the thermostat becomes unresponsive, the unit won't call for heating or cooling, and no low-voltage components will operate. It is often the first component to check when nothing works at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 transformer | Designed to OEM factory tolerances for reliable, stable low-voltage output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier part (HT01BD236), ensuring exact VA capacity and terminal compatibility. Generic transformers may underperform under full low-voltage load, causing erratic control board behavior or premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify voltage is absent before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all wires before disconnecting. Always verify output voltage (24V AC) after installation before closing the unit.\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\u003eC48A203061\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltage on the unit's data plate or wiring diagram before ordering. If you're unsure of fitment, our HVAC parts team can verify compatibility before you purchase — same-day shipping available on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909761028467,"sku":"CARRIE-C48A203061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909761061235,"sku":"CARRIE-C48A203061-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_952fb954-d82b-4d10-8396-0da36d6b1679.jpg?v=1782939123","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a203061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}