Why Is Water Leaking From Your AC Unit?

Condensation is a natural byproduct of air conditioning: When warm air meets the cold surface of an AC unit’s evaporator coil, condensation forms on the coil (the same way your cold glass of lemonade “sweats” on a hot day).

But all this condensation has to go somewhere, right? This is why your unit is designed with a drain pan and a drain line to lead the water out of your building. So, if your AC unit is leaking water, it’s safe to assume something’s gone awry with either the drainage equipment or the condensation itself.

Here are the possible reasons for the water you’ve discovered around your AC unit:

  • Your drain line is clogged. Dust, dirt, and mold find their way into your unit over time, and if they end up in your drain line, they’ll get wet and form a clog. In turn, this causes a backup and water leaks into your home.
  • Your drain pan is defective. The drain pan could be cracked, rusted, or simply worn out, allowing water to fall through.
  • Your pump is broken. If your unit is located in your basement, then it has a pump to bring the water outside. If this pump is broken, the water will leak inside your house.
  • Your air filter is too dirty. When an excessive buildup of dirt on your filter is blocking airflow, your evaporator coil will get too cold and freeze. Then, when it melts, your drain pan may not be able to handle the extra volume of water.
  • Your refrigerant is low. Insufficient refrigerant leads to low pressure in your unit, which has an effect similar to a blocked air filter: the evaporator coil gets too cold and freezes. When it eventually melts, there’s too much water and the drain pan overflows.

Of course, the best way to find out for sure what’s causing your AC’s water leak is to call the specialists at Peerless HVAC, Inc. We’re happy to help homeowners in Southlake, Dallas, Fort Worth, and beyond with superior HVAC services. Make an appointment with us today!