OEM Carrier Transformer 40VA 120V to 24V for Model FX4BNB060000AAAA

This OEM replacement transformer (part number HT01CN241) is the factory-specified control circuit transformer for the Carrier FX4BNB060000AAAA air handler. Its job is to step down line voltage (120V) to the 24V signal voltage that powers your thermostat, control board, and all low-voltage switching circuits. When this transformer fails — due to a shorted wire, a blown fuse downstream, or simply age — the entire control circuit goes dead: the thermostat goes blank, the system won't respond to any call for heating or cooling, and nothing works. Replacing this transformer is often the fastest and most affordable fix before condemning an expensive control board.

• Specs: Primary 120VAC | Secondary 24VAC | 40VA rating | OEM part number HT01CN241 | Factory-matched output for Carrier FX4BNB060000AAAA air handler control circuits
• OEM vs Generic: This is a genuine OEM Carrier transformer built to exact VA and voltage tolerances. Generic transformers can under-deliver VA capacity, causing nuisance tripping, control board brownouts, and premature failure of downstream components.
• Install difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter to confirm 24V output after installation. Label all wires before disconnecting. Straightforward swap for any intermediate DIYer or HVAC tech.
• Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier FX4BNB060000AAAA 5-ton air handler. Always verify your existing transformer's primary/secondary voltage and VA rating against your unit's data plate before ordering. Our team is available to confirm fitment — don't guess on a control circuit component. Order today and receive same-day shipping on all in-stock parts.