Westinghouse 669565R Txv R-410A 2.5 Ton Air Handler

Product Description

The WESTINGHOUSE 669565R is a thermal expansion valve (TXV) designed for R-410A refrigerant systems rated at 2.5 tons. The TXV meters refrigerant flow into the evaporator coil, maintaining the correct superheat level for efficient system operation. It is a factory-style replacement component installed inside a variable speed indoor air handler. Licensed HVAC technicians handle installation as part of refrigerant system service or component replacement. This valve plays a direct role in system efficiency and capacity, making correct sizing and compatibility critical before installation.

This TXV is specified for use in residential variable speed indoor air handler applications using R-410A refrigerant. It is designed to work within systems where precise refrigerant metering is required to support variable speed blower operation and maintain proper evaporator performance. The valve is matched to a 2.5-ton capacity system, which is a common residential cooling configuration. Technicians typically encounter this component during system troubleshooting, coil replacement, or refrigerant circuit repair on compatible air handler units.

Key Features

• Rated for R-410A refrigerant, the standard HFC refrigerant used in modern residential split systems
• 2.5-ton capacity rating matches the design load of compatible air handler configurations
• Designed as a direct OEM-style replacement for the specified variable speed air handler model
• Supports precise superheat regulation to protect compressor and maintain system efficiency
• Factory-matched to the PAH4VM-X30K-A/B air handler for reliable fit and function

Compatibility

Specified for use with the WESTINGHOUSE PAH4VM-X30K-A/B variable speed indoor air handler (model family PAH4VM). Verify the installed unit model number before ordering.

Installation Notes

TXV replacement must be performed by an EPA Section 608 certified HVAC technician. Recover all refrigerant from the system before removing the existing valve. After installation, the system must be evacuated, leak-tested, and recharged to manufacturer specifications before startup. Refer to the air handler service manual for mounting orientation and torque requirements specific to this application.

Technical Specifications

• Item Type: Thermal Expansion Valve (TXV)
• Refrigerant Type: R-410A
• Capacity: 2.5 Ton
• Compatible Unit Type: Variable Speed Indoor Air Handler
• Compatible Model Number: PAH4VM-X30K-A/B

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 669565R