{"product_id":"carrier-fb4anf048008afaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V\/24V for FB4ANF048008AFAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN236 for Model FB4ANF048008AFAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier FB4ANF048008AFAA\u003c\/strong\u003e air handler. The transformer steps down 120V line voltage to the 24V signal required by the thermostat, control board, contactor coil, and all low-voltage control circuits. When it fails, the thermostat goes completely dark, the system makes no response to any call for heating or cooling, and downstream 24V components receive no power — making it one of the most impactful single-component failures in the system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V | Secondary: 24V | Factory-matched impedance and thermal protection | OEM part number HT01CN236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound and thermally protected to Carrier's exact specifications. Generic transformers frequently underperform on VA capacity, causing nuisance tripping and overheating under normal control circuit loads — especially in multi-stage or multi-zone systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper, needle-nose pliers. Photograph all wiring connections before removal.\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 Engineered as a direct OEM replacement for the \u003cstrong\u003eCarrier FB4ANF048008AFAA\u003c\/strong\u003e air handler. Always verify primary voltage on your unit's data plate matches 120V before ordering. If your system runs on 208\/240V primary, do not install this unit. Our fitment team is available to confirm compatibility before you order — same-day shipping ensures you're back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909542957427,"sku":"CARRIE-FB4ANF048008AFAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909542990195,"sku":"CARRIE-FB4ANF048008AFAA-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_704cdc45-d880-4354-9f76-1fa8e05fa291.jpg?v=1782940889","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fb4anf048008afaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}