What is the purpose of a drain line in an air conditioning system?

The purpose of a drain line in an air conditioning system is to remove condensation created during the cooling process. As the air conditioning unit operates, it cools and dehumidifies the air inside the space. This process causes moisture in the air to condense on the evaporator coil, which is then collected as water. The drain line facilitates the safe and efficient removal of this excess water from the system, preventing potential damage or issues such as water pooling or mold growth within the unit or the surrounding area. Proper drainage is crucial for the overall efficiency and longevity of the air conditioning system, as it maintains optimal performance by preventing blockages and maintaining airflow.