What is the purpose of a condensate drain in an HVAC system?

The purpose of a condensate drain in an HVAC system is fundamentally to remove excess moisture. When an air conditioning system operates, it cools the air, which causes humidity in the air to condense into water. This water needs to be expelled from the system to maintain efficiency and prevent potential damage from leaks or excess moisture buildup. If the condensate is not properly removed through a drain, it could lead to operational issues, mold growth, or damage to the HVAC system and surrounding areas. Hence, a properly functioning condensate drain is crucial for maintaining an efficient and safe HVAC environment.