{"product_id":"carrier-ff1dna024075abaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V\/24V for FF1DNA024075ABAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model FF1DNA024075ABAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier FF1DNA024075ABAA\u003c\/strong\u003e air handler. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage switching circuits. When this component fails, the entire control circuit goes dead — your thermostat display goes blank, the system won't respond to any calls for heating or cooling, and no safety controls can operate. A failed transformer is often mistaken for a bad control board, so always test this component first before replacing more expensive parts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN236 | Factory-matched output tolerance for stable low-voltage operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers maintain precise 24V output under load, protecting sensitive control boards and thermostats. Off-brand units can deliver unstable voltage that damages downstream components or causes nuisance lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Verify output voltage with a multimeter after installation before restoring full power. Always photograph existing wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed by 3PM ship same business day from our HVAC parts warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eFF1DNA024075ABAA\u003c\/strong\u003e air handler. Verify your existing transformer's VA rating and primary\/secondary voltage on the unit's data plate before ordering to confirm fitment. Our parts specialists are available to confirm compatibility before you buy — no guesswork required. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909515759987,"sku":"CARRIE-FF1DNA024075ABAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909515792755,"sku":"CARRIE-FF1DNA024075ABAA-TRANSFORMER-HT01CN236-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-HT01CN236_a8ce65f3-83ea-4fc8-a921-f685a8fe2538.jpg?v=1782941004","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ff1dna024075abaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}