{"product_id":"carrier-c48a305051-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C48A305051 — Ships Today","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD236 for Model C48A305051\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C48A305051\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to 24V to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, the entire control circuit goes dark: the thermostat goes blank, the system won't respond to any commands, and nothing turns on. It is often the first component to inspect when a unit appears completely dead with no obvious cause.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Industry-standard footprint | Factory-matched OEM part number HT01BD236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory tolerances, ensuring stable 24V output under full control-circuit load. Generic alternatives frequently underperform at rated VA, causing nuisance tripping, erratic thermostat behavior, and premature control board failure.\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 (to confirm 24V output post-install). Always label or photograph low-voltage wiring before removing the old unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC48A305051\u003c\/strong\u003e packaged unit. Confirm primary voltage and VA rating on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before every order — contact us with your model and serial number.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909749985651,"sku":"CARRIE-C48A305051-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909750018419,"sku":"CARRIE-C48A305051-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_9b37a448-5566-4f89-845f-576ba28ec4d4.jpg?v=1782899341","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a305051-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}