{"product_id":"carrier-transformer-fb4anb048000agaa","title":"OEM Carrier Transformer HT01BD223 for Model FB4ANB048000AGAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer HT01BD223 for Model FB4ANB048000AGAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier transformer (HT01BD223) supplies the 24-volt control power that runs the thermostat, relays, and control board in your FB4ANB048000AGAA fan coil air handler. When the transformer fails, you lose all low-voltage control—your thermostat goes dark and the system won't respond. This genuine factory replacement steps line voltage down to the precise 24V the FB4ANB048000AGAA requires, restoring full control-circuit operation. It's a direct-fit part that mounts in the original location and wires to the existing primary and secondary leads, so no modifications are needed. Installation is moderate difficulty and involves line-voltage connections, so a licensed HVAC technician is recommended; always shut off power at the breaker before servicing. Choosing an OEM Carrier transformer ensures the correct VA rating and reliable, code-compliant performance that protects your control board and other low-voltage components from damage. This part is in stock and ships same-day on orders placed before 3PM CST, helping you restore comfort fast and avoid a prolonged no-cooling or no-heating situation.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4ANB048000AGAA.\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":62954654597491,"sku":"carrier-transformer-fb4anb048000agaa","price":39.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4anb048000agaa","provider":"National HVAC Parts","version":"1.0","type":"link"}