TXV

A thermal expansion valve (TXV) is a device used in HVAC systems to regulate the flow of refrigerant into the evaporator coil. It adjusts the refrigerant flow based on the temperature and pressure of the system to ensure optimal efficiency and proper cooling or heating performance. Technicians often refer to it as a “metering device” because it precisely controls how much refrigerant is allowed to enter the evaporator. If the TXV malfunctions, repair or replacement can be complex and requires the expertise of a professional technician, as it plays a critical role in maintaining the system’s performance.