{"product_id":"carrier-c48a402052-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C48A402052 | HT01BD236 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C48A402052\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier C48A402052\u003c\/strong\u003e packaged system. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage safety circuits. When this component fails, the entire control circuit goes dark — your thermostat loses power, the system won't respond to any calls for heating or cooling, and no fault codes will display. A failed transformer is often the first thing to check when a system appears completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD236 | Factory-matched for Carrier C48A402052 packaged units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by Carrier's control board. Undersized or off-spec generic transformers can cause nuisance tripping, brown-out conditions on the 24V circuit, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to verify 24V output after install. Label or photograph all low-voltage wiring connections before disconnecting the old unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC48A402052\u003c\/strong\u003e packaged unit. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909746577779,"sku":"CARRIE-C48A402052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909746610547,"sku":"CARRIE-C48A402052-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_8ed8884e-db8e-4001-9f81-6ad6a97c0824.jpg?v=1782939187","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a402052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}