{"product_id":"carrier-transformer-fc4dnf036005aaaa","title":"OEM Carrier Transformer Replacement Part for Fan Coil Model FC4DNF036005AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer Replacement Part for Fan Coil Model FC4DNF036005AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer is the genuine replacement component for the FC4DNF036005AAAA fan coil unit. The transformer steps down incoming line voltage to the low-voltage (24V) control circuit that powers your thermostat, control board, and relays. When a transformer fails, the unit loses control power entirely — no fan, no call for cooling or heating. Engineered to exact factory specifications, this part guarantees correct voltage output, mounting fit, and wiring terminals for the FC4DNF036005AAAA, eliminating the guesswork of universal substitutes. Installation is a moderate DIY job for anyone comfortable working around line voltage: disconnect power, note wire positions, swap the unit, and reconnect. Most homeowners with basic electrical knowledge complete it in under an hour, though we recommend a licensed HVAC technician for any high-voltage connection. Using a genuine Carrier transformer protects your warranty and ensures long-term reliability. In stock and ready to go — orders placed before 3PM CST ship the same day, getting your system back online fast.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FC4DNF036005AAAA.\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":62947286974835,"sku":"carrier-transformer-fc4dnf036005aaaa","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fc4dnf036005aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}