{"product_id":"carrier-09de064c900-transformer-h2ut4z","title":"OEM Carrier Control Transformer 40VA 230V\/115V for 09DE064C900","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230V\/115V for Model 09DE064C900\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE064C900\u003c\/strong\u003e. The transformer steps down line voltage to power the low-voltage control circuit that runs your thermostat, contactor coil, and safety switch logic. When this transformer fails, the entire control circuit loses power — nothing responds, the thermostat goes blank, and the system won't start. If you're seeing a completely unresponsive unit with no 24V signal at the board, a failed transformer is one of the first components to test.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary voltage | 115V secondary voltage | OEM Part # HT01BC208 | Cross-references: 320659-301, 2-05757-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Totaline\/Carrier OEM transformer wound to exact factory VA and voltage specifications. Generic transformers often run outside rated tolerances, risking control board damage or nuisance tripping of the internal fuse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all wires before disconnecting. Confirm secondary output voltage with a multimeter before restoring power.\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 Engineered as a direct OEM replacement for Carrier model \u003cstrong\u003e09DE064C900\u003c\/strong\u003e. Verify primary and secondary voltages against your unit's data plate before ordering. Cross-reference numbers 320659-301 and 2-05757-1 can be used to confirm fitment. Need help verifying the correct part? Our HVAC parts specialists confirm compatibility before you order — reach out today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640123806067,"sku":"CARRIE-09DE064C900-TRANSFORMER-HT01BC208","price":53.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640123838835,"sku":"CARRIE-09DE064C900-TRANSFORMER-HT01BC208-GEN","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_05aa4af9-cb4f-4f3c-b2ad-ababcbdf64c5.jpg?v=1775025865","url":"https:\/\/nationalhvacparts.com\/products\/carrier-09de064c900-transformer-h2ut4z","provider":"National HVAC Parts","version":"1.0","type":"link"}