{"product_id":"carrier-transformer-fx4dnb049t00aaaa","title":"OEM Carrier Transformer for Carrier Fan Coil Model FX4DNB049T00AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer for Carrier Fan Coil Model FX4DNB049T00AAAA\u003c\/h1\u003e\n\u003cp\u003eRestore reliable control power to your Carrier FX4DNB049T00AAAA fan coil with this genuine OEM transformer. The transformer steps incoming line voltage down to the 24V signal that powers the thermostat, control board, and contactor, making it essential to every heating and cooling cycle. A burned-out transformer commonly causes a totally dead system — blank thermostat, no blower, no response to a cooling call — and the dependable repair is the exact factory part. Built to Carrier's original voltage and mounting specifications for the FX4DNB049T00AAAA, this transformer matches the terminal configuration and bracket location for a straightforward drop-in installation with no rewiring. The replacement is a moderate DIY job: turn off power at the breaker, photograph the current lead positions, transfer the wires individually, and secure the new unit in place. Most people complete it in under 30 minutes using basic tools. Choosing the OEM transformer over an aftermarket alternative protects your low-voltage circuit and helps prevent repeat failures. This part is in stock for immediate fulfillment — place your order before 3PM CST for same-day shipping.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FX4DNB049T00AAAA.\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":62942886560115,"sku":"carrier-transformer-fx4dnb049t00aaaa","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-carrier-transformer-fx_3661ed5a-9482-438b-b4ad-ce6c307aad09.jpg?v=1781473574","url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fx4dnb049t00aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}