Westinghouse 622337 Furnace Transformer 40 Va 120/24 Vac

Product Description

The WESTINGHOUSE 622337 is a 40 VA furnace transformer rated for 120/24 VAC operation at 60 Hz. It steps down line voltage to the 24-volt control circuit that powers thermostats, control boards, gas valve coils, and other low-voltage components in forced-air heating systems. At 40 VA, it delivers sufficient capacity for standard residential furnace control loads. HVAC technicians install this transformer as a direct replacement when the original unit fails due to overload, short circuit, or age-related degradation of the secondary winding.

This transformer is designed for use in gas furnaces where a 120-volt primary and 24-volt secondary control circuit is required. It fits the typical residential forced-air furnace application and is suited for installations where the original transformer has failed and a same-spec replacement is needed. Licensed HVAC technicians handling control-circuit repairs will find this a straightforward drop-in service part for standard low-voltage furnace control systems.

Key Features

• 40 VA capacity supports full residential furnace control circuit loads
• 120-volt primary to 24-volt secondary step-down configuration
• 60 Hz rated for standard North American electrical systems
• Designed as a service replacement for failed OEM furnace transformers

Compatibility

Designed as an OEM-style replacement transformer for residential gas furnaces requiring a 40 VA, 120/24 VAC, 60 Hz low-voltage control circuit transformer.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect power at the breaker before removing the existing transformer, and verify the system is fully de-energized before handling any wiring. Confirm the new transformer VA rating and voltage specifications match the original before energizing the circuit. Follow applicable NEC guidelines for low-voltage control wiring and equipment replacement.

Technical Specifications

• Type: Transformer
• Primary Voltage: 120 volts
• Secondary Voltage: 24 volts
• Capacity: 40 VA
• Frequency: 60 Hz
• Application: Furnace

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 622337