{"product_id":"carrier-c48a505052-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C48A505052","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C48A505052\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 C48A505052\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to the 24V signal required to power the entire control circuit — including the thermostat, contactor coil, gas valve, and control board. When the transformer fails, nothing in the system responds: the thermostat goes dark, the unit won't call for heating or cooling, and you may detect a faint burning smell or a tripped secondary fuse.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary voltage: 120V | Secondary voltage: 24V | OEM part number HT01BD236 | Mounts via standard bracket to control panel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM transformer is wound to exact VA and voltage tolerances. Generic alternatives often under-deliver on VA capacity, causing nuisance tripping, overheating, and premature failure — especially under heavy control-circuit loads common in packaged units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 24V output after install). Always label wires before disconnecting and check for a shorted secondary before installing a new transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed by 3PM ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier C48A505052\u003c\/strong\u003e packaged unit. Confirm your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering. If you're replacing a repeatedly failed transformer, inspect downstream components for shorts to protect your new part. Have a fitment question? Our HVAC parts specialists verify compatibility before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909730128243,"sku":"CARRIE-C48A505052-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909730161011,"sku":"CARRIE-C48A505052-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_6e30dc67-79c8-409a-9c9b-90084505ee9b.jpg?v=1782940225","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a505052-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}