{"product_id":"carrier-transformer-fa4anf042008afaa","title":"OEM Carrier Transformer HT01BD220 for Model FA4ANF042008AFAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer HT01BD220 for Model FA4ANF042008AFAA\u003c\/h1\u003e\n\u003cp\u003eThis genuine Carrier transformer (HT01BD220) converts incoming line voltage to the 24V control voltage that runs the thermostat, relays, and control board in your FA4ANF042008AFAA fan coil air handler. When the transformer fails, the entire low-voltage circuit goes dead — you may see a blank thermostat, a system that ignores every call, or a low-voltage fuse that blows repeatedly. Manufactured to Carrier's exact OEM specifications, this transformer provides stable, correctly rated 24V output so your controls operate safely and consistently. It is a direct fit for the FA4ANF042008AFAA and mounts to the factory bracket with the existing wire connections. Installation is moderate difficulty: a knowledgeable DIYer can typically complete it in about 30 minutes, though a licensed technician is recommended for anyone uneasy working near line voltage. Always disconnect power at the breaker before wiring. Restore your control circuit with the exact part Carrier engineered. In stock and ships same-day when you order before 3PM CST.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FA4ANF042008AFAA.\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":62957834469747,"sku":"carrier-transformer-fa4anf042008afaa","price":54.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fa4anf042008afaa","provider":"National HVAC Parts","version":"1.0","type":"link"}