{"product_id":"carrier-transformer-fb4anf030005afaa","title":"OEM Carrier Transformer EF18AX075 for Model FB4ANF030005AFAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer EF18AX075 for Model FB4ANF030005AFAA\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier transformer (EF18AX075) supplies the low-voltage control power your FB4ANF030005AFAA fan coil needs to operate. It steps the incoming 240V line down to the 24V required by the thermostat, control board, and relays that run the air handler. When a transformer fails, the system goes completely dead — no thermostat display, no fan, no response — even though high-voltage power is present. This factory replacement is rated to the exact VA and voltage specifications Carrier engineered for the FB4ANF030005AFAA, ensuring proper, safe operation. Installation is a moderate task best suited to those comfortable with HVAC wiring: cut power at the breaker, photograph and label the primary and secondary leads, mount the new transformer, and reconnect. Most technicians finish in 30 to 45 minutes. Using the correct OEM transformer protects your control board and downstream components from voltage problems. In stock and ready to ship same-day on orders placed before 3PM CST.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4ANF030005AFAA.\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":62953871507827,"sku":"carrier-transformer-fb4anf030005afaa","price":39.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4anf030005afaa","provider":"National HVAC Parts","version":"1.0","type":"link"}