OEM Carrier Control Transformer 40VA 120V/24V for Model CH14NA04800GAAAA

This is the OEM replacement control transformer (part number HT01AW229) for the Carrier CH14NA04800GAAAA heat pump condenser. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, contactor coil, and all low-voltage control circuits. When this transformer fails, the entire control circuit goes dead — your thermostat loses power, the system stops responding to calls for heating or cooling, and in some cases a tripped secondary fuse is the only clue. Replacing it is one of the most cost-effective repairs in HVAC service.

• Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01AW229 | Factory-matched impedance and thermal cutoff rating
• OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances for the Carrier control board. Undersized or off-tolerance generic units can trip repeatedly under full control-circuit load, damaging downstream boards and contactors.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching terminals). Label or photograph all low-voltage wiring before disconnecting. Total job time is typically 20–30 minutes.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier CH14NA04800GAAAA 4-ton heat pump condenser. Always verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate or wiring diagram before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.