Carrier P540-4456 R-410A Expansion Valve for AC Systems

The Carrier P540-4456 is an OEM replacement expansion valve engineered specifically for R-410A refrigerant systems. Designed to deliver precise refrigerant metering, this thermostatic expansion valve (TXV) maintains optimal system efficiency by regulating refrigerant flow into the evaporator coil — helping to maximize cooling capacity, protect the compressor, and extend overall system life.

Key Features

• OEM Carrier replacement part — ensures proper fit and function
• Designed for use with R-410A refrigerant
• Regulates refrigerant flow for precise superheat control
• Helps protect the compressor from liquid slugging
• Supports efficient system operation and consistent cooling performance
• Built to Carrier’s quality and reliability standards

Application

This expansion valve is a direct OEM replacement for compatible Carrier air conditioning and heat pump systems using R-410A refrigerant. Always verify compatibility with your specific Carrier unit model before installation.

Why Choose an OEM Expansion Valve?

Using a genuine Carrier OEM expansion valve ensures the correct flow rating, port sizing, and operating characteristics for your system. Aftermarket substitutes may not deliver the same performance or longevity. The P540-4456 is the manufacturer-approved solution for maintaining peak system efficiency and warranty compliance.