OEM Carrier Transformer 40VA 120V/24V for Model HA1CJX060000ABAA (HT01AW229)

This is the factory OEM replacement transformer for the Carrier HA1CJX060000ABAA air handler. The transformer is the backbone of your system's low-voltage control circuit — it steps down 120V line voltage to the 24V signal voltage that powers your thermostat, control board, contactor coil, and zone controls. When this component fails, the entire control circuit goes dark: the thermostat loses power, the system won't respond to calls for heating or cooling, and you may find a blown fuse on the control board as a telltale sign.

• Specs: 40VA rating | 120V primary input | 24V secondary output | OEM part number HT01AW229 | Direct factory replacement with matched VA capacity
• OEM vs Generic: The OEM HT01AW229 transformer is wound to exact factory VA tolerances, protecting downstream components like the control board and contactor coil from voltage fluctuations. Undersized or off-tolerance generic transformers can overheat, trip thermal cutoffs, or shorten control board life significantly.
• Install difficulty: 2/5 — Disconnect power at the breaker and verify zero voltage with a multimeter before starting. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter. Label or photograph all wiring connections before removing the old unit. After installation, verify 24V output at the secondary terminals before reassembling the panel.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Designed specifically for the Carrier HA1CJX060000ABAA air handler. Always verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your system back online today.