Westinghouse 920668A Txv Kit R-410A 2.5 Ton Air Handler

Product Description

The WESTINGHOUSE 920668A is a thermal expansion valve (TXV) kit designed for use with R-410A refrigerant systems in residential air handler applications. The TXV meters refrigerant flow into the evaporator coil based on superheat demand, maintaining efficient system operation across varying load conditions. Rated for 2.5-ton capacity, this kit is a direct OEM-style replacement for air handlers running R-410A in split-system air conditioning and heat pump configurations. Installation is handled by a licensed HVAC technician as part of a refrigerant system service or upgrade.

This TXV kit is specifically listed for use on the GB5BM air handler platform. It fits air handler part numbers 04303GD/GB5BM-X24K-A and 904305GD/GBSBM-X24K-B. Typical application is a residential split-system installation where the air handler is paired with a matched outdoor condensing unit or heat pump. The valve kit format simplifies the replacement process by including the components needed for a complete swap at the metering device.

Key Features

• Rated for R-410A refrigerant systems
• 2.5-ton capacity sizing for matched system performance
• Compatible with both air conditioning and heat pump (AC/HP) operation
• OEM-specified kit format for the GB5BM air handler series
• Direct replacement for listed air handler part numbers

Compatibility

Designed for use on WESTINGHOUSE GB5BM air handlers, specifically part numbers 04303GD/GB5BM-X24K-A and 904305GD/GBSBM-X24K-B, in R-410A split-system air conditioning and heat pump applications.

Installation Notes

Installation must be performed by an EPA 608-certified HVAC technician. Recover all refrigerant from the system before removing the existing metering device, in compliance with EPA Section 608 regulations. De-energize the air handler and outdoor unit at the disconnect before beginning work. Do not attempt to install or adjust a TXV without proper refrigerant recovery equipment and manifold gauges.

Technical Specifications

• Refrigerant Type: R-410A
• Capacity: 2.5 Ton
• System Type: Air Conditioning / Heat Pump
• Used On Item: Air Handler
• Compatible Part Numbers: 04303GD/GB5BM-X24K-A, 904305GD/GBSBM-X24K-B

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 920668A