{"product_id":"carrier-09de064800-transformer-h2ut4z","title":"OEM Carrier Transformer 40VA 230\/115V for Model 09DE064800","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 230V\/115V for Model 09DE064800\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier 09DE064800\u003c\/strong\u003e. The transformer is the backbone of your HVAC unit's control circuit — it steps down the supply voltage to power the thermostat, control board, and all 24V control components. When this transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system won't respond to any commands, and no heating or cooling operation can occur. A failed transformer is often identified by a burning smell, a tripped fuse on the secondary side, or a complete loss of 24V signal across the system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 230V primary voltage | 115V secondary voltage | Totaline OEM-branded | Factory-matched to Carrier 09DE064800 electrical specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by the factory control board. Aftermarket units can run hot, trip internal breakers prematurely, or deliver off-spec voltage that damages sensitive circuit boards and thermostats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and breaker before replacing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before removal. Verify 24V output with a multimeter after installation before closing up the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier model 09DE064800\u003c\/strong\u003e. Cross-references include OEM part numbers 320659-301 and 2-05757-1. Always verify primary and secondary voltage ratings on your unit's data plate prior to ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640125935987,"sku":"CARRIE-09DE064800-TRANSFORMER-HT01BC208","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640125968755,"sku":"CARRIE-09DE064800-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_df58539d-c56a-4559-81b1-17cd800de1c1.jpg?v=1782942486","url":"https:\/\/nationalhvacparts.com\/products\/carrier-09de064800-transformer-h2ut4z","provider":"National HVAC Parts","version":"1.0","type":"link"}