OEM Carrier 40VA Control Transformer HT01BC701 for Model PY3GEAA60130NA

This OEM control transformer is the factory-specified replacement (part number HT01BC701) for the Carrier PY3GEAA60130NA unit. The transformer steps down 120V line voltage to 24V AC, powering the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, nothing works: the thermostat goes blank, the system will not call for heating or cooling, and no control signals reach any downstream component. If you measure 0V at your 24V control terminals with 120V confirmed at the primary, this transformer is the likely culprit.

• Specs: 120V primary input | 24V secondary output | 40VA rating | OEM part number HT01BC701 | Factory-matched for Carrier PY3GEAA60130NA
• OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by the Carrier control board. Undersized or off-tolerance generic units can cause erratic board behavior, nuisance lockouts, or premature board failure — making OEM the only recommended choice for reliable operation.
• Install Difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label or photograph all low-voltage wiring before disconnecting. Verify 0V with your multimeter before touching any terminals.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Confirmed fit for Carrier model PY3GEAA60130NA. Always verify the OEM part number HT01BC701 against your unit's wiring diagram or data plate before ordering. Our team is available to confirm fitment — contact us before you order if you have any questions. Order now and ship today!