Why is my Ac Leaking Water?

by | Mar 5, 2026

Air conditioning units typically leak water due to two primary issues: clogged condensate drains or frozen evaporator coils.

Clogged drains occur when dirt and debris build up over time, which prevents water from draining properly out of the system. This is a common problem in Denver homes where the dry climate and dust can accelerate buildup.

Frozen evaporator coils are another frequent cause, often resulting from low refrigerant levels or restricted airflow. When the coils freeze and then melt, they can overwhelm the drainage system and lead to visible leaks. In high-altitude environments, these efficiency issues can escalate quickly if not addressed.

To resolve these leaks, professional technicians typically perform the following steps:

  • A visual inspection of the unit and drain lines for blockages.
  • Testing for refrigerant leaks using specialized tools.
  • Verifying system pressures and coil temperatures.
  • Clearing drains and defrosting or cleaning the coils.

Quickly addressing these leaks is important to prevent mold growth and further system damage.

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