{"product_id":"carrier-transformer-fb4cnp048t00aaaa","title":"OEM Carrier Transformer for Model FB4CNP048T00AAAA Air Handler","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer for Model FB4CNP048T00AAAA Air Handler\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer is the factory replacement low-voltage supply for the FB4CNP048T00AAAA fan coil air handler. It reduces incoming line voltage to the 24V control signal that powers your thermostat, relays, and control board — when it fails, the air handler loses its control circuit and stops responding to heating and cooling calls. Engineered to Carrier's original specs, it supplies the correct VA rating and secondary voltage so every downstream component operates safely within its design range. Replacement is a moderate DIY task for anyone comfortable working with electricity removed: shut off the disconnect, label and transfer the primary and secondary leads, mount the new transformer, and confirm 24V output before restoring power. Most installs finish in 20–30 minutes with basic hand tools. Choosing OEM means a guaranteed fit and consistent, fault-free performance rather than the compatibility risks of generic transformers. We keep this part in stock, and orders placed before 3PM CST ship the same day so your system is back up with minimal interruption.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNP048T00AAAA.\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":62949923389811,"sku":"carrier-transformer-fb4cnp048t00aaaa","price":34.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnp048t00aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}