{"product_id":"carrier-09de084810-transformer-h2ut4z","title":"OEM Carrier Transformer 40VA 230\/115V for Model 09DE084810","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 230\/115V for Model 09DE084810\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer for the \u003cstrong\u003eCarrier 09DE084810\u003c\/strong\u003e, sourced directly from Carrier\/Totaline. The transformer steps down incoming line voltage to the lower control-circuit voltage required to power the thermostat, contactor coils, and safety limit circuits. When this transformer fails, the entire low-voltage control circuit loses power — the thermostat goes blank, the system refuses to start, and no fault codes are produced, making this a common misdiagnosis. If you have confirmed 24V control voltage is absent and the transformer primary is receiving line voltage, this part is the direct fix.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary input | 115V secondary output | 50\/60 Hz | OEM Part Number: 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 Carrier\/Totaline OEM transformer wound to factory tolerances. Aftermarket units frequently underperform their VA rating under load, causing nuisance tripping of the internal thermal fuse and premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify input\/output voltage post-install). Photograph all wiring connections before disconnecting the old transformer. Wire gauge and terminal orientation must match exactly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before 3 PM local time ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier 09DE084810\u003c\/strong\u003e. Always verify the VA rating and primary\/secondary voltages printed on your existing transformer's label before ordering — mismatched voltages can damage downstream control components. Our parts specialists are available to confirm fitment before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640121708915,"sku":"CARRIE-09DE084810-TRANSFORMER-HT01BC208","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640121741683,"sku":"CARRIE-09DE084810-TRANSFORMER-HT01BC208-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-HT01BC208_0e245cd8-282f-4fcc-a5db-52fb0b0a7950.jpg?v=1782942496","url":"https:\/\/nationalhvacparts.com\/products\/carrier-09de084810-transformer-h2ut4z","provider":"National HVAC Parts","version":"1.0","type":"link"}