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Restore low-voltage power to your air handler with this genuine OEM Carrier transformer, the factory component for the FB4CNF018T00ABAA fan coil unit. The transformer steps line voltage down to 24V, powering the thermostat, relays, and control board that orchestrate heating and cooling. When this part fails, the unit goes silent and ignores thermostat commands. Manufactured to Carrier's precise VA capacity and voltage specs, this replacement drops directly into the FB4CNF018T00ABAA without modification, ensuring correct fit and dependable performance. Installation difficulty is moderate—ideal for an HVAC professional or an experienced DIYer comfortable with low-voltage wiring. Be sure to cut power at the breaker and confirm primary and secondary voltage before reconnecting. Genuine OEM Carrier parts deliver the durability and exact compatibility that bargain aftermarket transformers simply can't guarantee. Place your order before 3PM CST and it ships the same day, getting your system back up quickly. Choose authentic Carrier for lasting reliability.
This part is compatible with Carrier model FB4CNF018T00ABAA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.