OEM Carrier Transformer 40VA 120V/24V for Model HA1BJX060000ABAA

This is the genuine OEM replacement transformer (part number HT01AW229) for the Carrier HA1BJX060000ABAA packaged unit. The transformer steps down 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, control board, contactor coil, and zone controls. When it fails, the result is total system silence: the thermostat goes blank, nothing responds, and no call for heating or cooling is processed. A failed transformer is one of the most common causes of a completely unresponsive HVAC system.

• Specs: 40VA rated | 120V primary / 24V secondary | Factory-matched OEM replacement for part number HT01AW229 | Class 2 transformer for low-voltage control circuits
• OEM vs Generic: The OEM HT01AW229 is wound to exact Carrier factory specifications, ensuring correct VA capacity and voltage output under load. Undersized or off-tolerance generic transformers can overheat, trip internal thermal fuses, or deliver insufficient current to close contactors reliably.
• Install difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label or photograph all low-voltage wiring before disconnecting terminals. Check for a tripped secondary fuse or shorted control wiring before installing — a short on the 24V side will blow the new transformer immediately.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier HA1BJX060000ABAA packaged unit using OEM part number HT01AW229. Always verify the VA rating and primary/secondary voltage on your existing transformer's label before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you buy — no guesswork required.