{"product_id":"carrier-transformer-fa4cnc042008aaaa","title":"OEM Carrier Transformer HT01BD223 for Model FA4CNC042008AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer HT01BD223 for Model FA4CNC042008AAAA\u003c\/h1\u003e\n\u003cp\u003eBring control power back to your Carrier FA4CNC042008AAAA with this genuine OEM transformer (HT01BD223). The transformer converts incoming line voltage down to the 24V required to operate your thermostat, control board, contactor, and relays. A burned-out transformer leaves the system totally dead — no thermostat display, no fan, no cooling call. This authentic Carrier replacement matches the original's primary and secondary voltage and VA ratings exactly, ensuring a correct electrical and mechanical fit on the FA4CNC042008AAAA fan coil. Using the proper OEM transformer keeps your entire 24V control circuit stable and shields the control board from voltage-related damage. Installation is rated moderate: an experienced DIYer or technician can complete the swap in roughly 30 minutes by matching the lead wires and mounting bracket, always with power disconnected at the breaker. This is a brand-new genuine Carrier part, not a generic equivalent that may under-deliver VA. Order before 3PM CST and it ships the same day, getting your HVAC system back in service quickly. Our parts team is available to confirm fit before you buy.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FA4CNC042008AAAA.\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":62955776704883,"sku":"carrier-transformer-fa4cnc042008aaaa","price":44.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fa4cnc042008aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}