What is meant by the term high efficiency purge unit on a chiller?

A high efficiency purge unit on a chiller is designed to effectively remove non-condensable gases, such as air and moisture, from the refrigerant circuit. By maintaining a low level of these gases, the purge unit helps optimize the chiller's performance, improve energy efficiency, and prevent potential damage to the system. This process enhances the overall reliability and longevity of the chiller while ensuring it operates at peak efficiency.