{"product_id":"carrier-c48a302052-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C48A302052 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C48A302052\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 C48A302052\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage down to the 24V signal that powers your thermostat, control board, contactor coil, and all low-voltage control circuits. When this component fails, the entire control system goes dark — your thermostat shows no response, the unit won't call for heating or cooling, and nothing happens when you adjust the setpoint. A failed transformer is often the first suspect when a system appears completely dead with no error codes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched output for stable low-voltage control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA ratings and insulation class specifications for this unit. Undersized or off-brand transformers can drop voltage under load, causing intermittent lockouts and premature control board failure — costing far more than the part itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect box and verify zero voltage with a multimeter before proceeding. Tools needed: flathead and Phillips screwdriver, multimeter, wire nuts or spade terminals. Label all low-voltage wires before disconnecting. Check for a blown fuse on the control board as the root cause before replacing the 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 as the direct OEM replacement for \u003cstrong\u003eCarrier C48A302052\u003c\/strong\u003e packaged units. Always verify the VA rating and primary\/secondary voltages on your unit's wiring diagram or data plate before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909755490675,"sku":"CARRIE-C48A302052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909755523443,"sku":"CARRIE-C48A302052-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_4c5916ef-56ad-46c4-a91a-76d1911d955a.jpg?v=1782899307","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a302052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}