{"product_id":"carrier-transformer-fa4cnf042010aaaa","title":"OEM Carrier Transformer TRANS-FA4CNF042 for Model FA4CNF042010AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer TRANS-FA4CNF042 for Model FA4CNF042010AAAA\u003c\/h1\u003e\n\u003cp\u003eThis genuine Carrier transformer provides the 24V control power that runs the thermostat, contactor coil, and safety circuits on your FA4CNF042010AAAA fan coil. If the transformer fails, the system loses control voltage and the blower won't respond to any thermostat call, leaving you without heating or cooling. A factory OEM transformer restores stable low-voltage power and protects sensitive control components from surges and overload. This part is built to Carrier's exact VA rating, terminal configuration, and mounting dimensions for the FA4CNF042010AAAA, ensuring a clean fit and reliable performance that aftermarket parts can't match. Installation is moderate difficulty: a qualified HVAC technician can replace it in about 30 minutes with power disconnected, then confirm primary and secondary voltage before re-energizing. We stock only authentic Carrier components, so your repair meets factory standards. Orders placed before 3PM CST ship same-day from our warehouse to minimize downtime. Trust NationalHVACParts for genuine Carrier parts and fast, accurate fulfillment every time.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FA4CNF042010AAAA.\u003c\/p\u003e\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping before 3 PM CST. 30-day returns on uninstalled parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":62955303108979,"sku":"carrier-transformer-fa4cnf042010aaaa","price":54.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fa4cnf042010aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}