{"product_id":"carrier-transformer-fx4dnb049l00abaa","title":"OEM Carrier Transformer Replacement Part for Model FX4DNB049L00ABAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer Replacement Part for Model FX4DNB049L00ABAA\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier transformer is the factory-specified replacement for the FX4DNB049L00ABAA fan coil air handler. The transformer steps line voltage down to the 24V control voltage that powers your thermostat, control board, contactor, and safety circuits. When a transformer fails, the system goes completely dead at the thermostat even though high-voltage power is present, so a correct replacement restores full control operation. Engineered to Carrier's exact electrical specifications, this part drops directly into the FX4DNB049L00ABAA without modification, ensuring proper VA rating, mounting, and wire terminations. Installation is moderate and best handled by an HVAC technician: disconnect power, photograph the existing wiring, swap the transformer onto the same mounting bracket, and reconnect the primary and secondary leads. Using the OEM unit avoids the voltage-matching guesswork of universal parts and protects your control board from over- or under-voltage damage. We keep this transformer in stock and ship same-day on all orders placed before 3PM CST, so you can get your air handler back online fast. Backed by genuine Carrier quality.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FX4DNB049L00ABAA.\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":62942888821107,"sku":"carrier-transformer-fx4dnb049l00abaa","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-carrier-transformer-fx_ca8c0c98-51eb-41f0-a723-59c9a777d31b.jpg?v=1781474270","url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fx4dnb049l00abaa","provider":"National HVAC Parts","version":"1.0","type":"link"}