{"product_id":"carrier-fa4anf018010agaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V-24V for FA4ANF018010AGAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model FA4ANF018010AGAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier FA4ANF018010AGAA\u003c\/strong\u003e fan coil air handler. The transformer steps down line voltage (120V) to the 24V control circuit voltage that powers your thermostat, contactor coil, and control board. When this component fails, the entire control circuit goes dead — the thermostat display may go blank, the system won't respond to any calls for heating or cooling, and in some cases a blown fuse on the control board is the first sign the transformer has shorted. Replacing this OEM-matched transformer restores full system operation quickly and reliably.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01CN236 | Factory-matched output for Carrier control circuits\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 tolerance specifications. Generic transformers may underperform under load, causing intermittent lockouts, nuisance tripped fuses, or premature control board failure due to voltage fluctuation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and disconnect switch before beginning. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label all low-voltage wires before disconnecting. Total job time: 20–30 minutes for most technicians.\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 specifically for the \u003cstrong\u003eCarrier FA4ANF018010AGAA\u003c\/strong\u003e fan coil air handler. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or old component label before ordering. If you're unsure of fitment, our HVAC parts team can confirm compatibility before you buy — same-day shipping available on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909561536883,"sku":"CARRIE-FA4ANF018010AGAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909561569651,"sku":"CARRIE-FA4ANF018010AGAA-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_6610be6a-5f36-430b-8d2d-545e027b78ae.jpg?v=1782939444","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fa4anf018010agaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}