{"product_id":"carrier-c48a204061-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C48A204061 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C48A204061\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C48A204061\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage required by your thermostat, control board, contactor coil, and all low-voltage safety controls. When the transformer fails, the entire control circuit loses power — the result is a completely unresponsive system: no thermostat display response, no contactor pull-in, and no fan or compressor operation regardless of thermostat demand.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 transformer | OEM part number HT01BD236 | Factory-matched output tolerance for stable control voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers maintain tighter voltage regulation under load, protecting sensitive control boards and thermostats from voltage fluctuation that can cause nuisance lockouts or premature board failure. Generic units frequently run under-rated VA, causing thermal cutout trips on high-demand days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Verify primary and secondary voltages with a multimeter after installation before restoring full operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for the \u003cstrong\u003eCarrier C48A204061\u003c\/strong\u003e packaged unit. Confirm your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. If you're unsure of fitment, our HVAC parts specialists are available to verify compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909758669171,"sku":"CARRIE-C48A204061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909758701939,"sku":"CARRIE-C48A204061-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_8761834e-0479-4859-9ba8-163c526cc94c.jpg?v=1782899292","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a204061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}