{"product_id":"carrier-c48a402061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C48A402061 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C48A402061\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eC48A402061\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to 24V AC to power the entire control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, absolutely nothing responds: the thermostat goes blank, the system won't call for heating or cooling, and you may find a blown low-voltage fuse. It's one of the first components to check when the whole system appears dead.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Single-phase | OEM part number HT01BD236 | Factory-matched output tolerances for reliable control circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound and rated to Carrier's exact factory specifications. Generic transformers may underperform at rated VA load, causing intermittent control failures, nuisance fuse blowing, and premature contactor coil burnout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Label or photograph all low-voltage wiring before disconnecting. Verify 24V output with a multimeter after installation before re-energizing the full system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed by cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC48A402061\u003c\/strong\u003e packaged unit. Always confirm the transformer's VA rating and primary\/secondary voltages match your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to verify compatibility before you purchase — same-day shipping available on all in-stock OEM Carrier parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909745693043,"sku":"CARRIE-C48A402061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909745725811,"sku":"CARRIE-C48A402061-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_93a0583a-4d90-403a-9d3f-eaa3c342802e.jpg?v=1782939190","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a402061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}