What is one purpose of the condensate drain in HVAC systems?

The primary purpose of the condensate drain in HVAC systems is to remove excess water formed during the cooling process. When air is cooled, moisture from the air condenses and collects in the evaporator coil. This is especially important in areas with high humidity where significant amounts of moisture can accumulate. The condensate drain effectively channels this collected water away from the unit, preventing water buildup that could potentially lead to damage or issues such as mold growth, that can impact indoor air quality. Proper drainage also ensures that the HVAC system operates efficiently and maintains optimal performance without interruptions caused by water overflow or blockages.