{"product_id":"carrier-09de084c510-transformer-h2ut4z","title":"OEM Carrier 40VA Transformer 120V–24V for Model 09DE084C510","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V–24V for Model 09DE084C510\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part \u003cstrong\u003eHT01BC208\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier 09DE084C510\u003c\/strong\u003e HVAC system. The transformer steps down line voltage from 120V to the 24V needed to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When the transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system will not respond to any commands, and no heating or cooling can occur.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V secondary | 40VA rating | Factory-matched construction for reliable low-voltage output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to Carrier's exact VA and voltage tolerances. Generic transformers may under-deliver on VA capacity, causing nuisance tripping or premature failure when contactor coils draw peak current on startup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker before replacing. Tools needed: flathead and Phillips screwdrivers, wire nuts or terminal connectors, multimeter (to verify 24V output post-install). Photograph existing wiring before disconnecting any leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships 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\u003e09DE084C510\u003c\/strong\u003e system. Confirm your unit's control voltage (24V) and VA draw on the data plate or wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640120562035,"sku":"CARRIE-09DE084C510-TRANSFORMER-HT01BC208","price":33.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640120594803,"sku":"CARRIE-09DE084C510-TRANSFORMER-HT01BC208-GEN","price":29.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BC208_d4358ca3-d6ee-47c6-9f66-fface090c830.jpg?v=1775016336","url":"https:\/\/nationalhvacparts.com\/products\/carrier-09de084c510-transformer-h2ut4z","provider":"National HVAC Parts","version":"1.0","type":"link"}