When it gets really hot outside, especially during a hot Austin summer, and you constantly have your AC system running, condensation can occur. While a small amount of condensation is normal, large puddles of water around your indoor unit can be a sign that something isn’t working properly. Let’s fix that!

Clogged Condensate Drain Line

Over time there will be buildup such as dirt, dust, algae and even mold that can clog up the drain line. When this happens the water can no longer drain properly, that’s a problem because it can back up into the system and eventually leak around the indoor AC unit.

Dirty Air Filter

A clean filter is key for steady air flow. When the air filter becomes clogged with all that buildup it can restrict the amount of warm air moving through the evaporator coil. Without enough warm airflow the evaporator coil can become too cold and freeze, and ice will build up on the coil. This can be a problem because when the system shuts off, the ice will begin to thaw and all that frozen moisture turns back into water. The drainage system may not be able to handle all that extra water fast enough, which can then result in water leaking around the unit.

Frozen Evaporator Coil

Having a frozen coil can have several causes, including restricted airflow from a dirty filter, blocked vents, blower problems etc. Frozen coils should not be ignored. If your evaporator coil continues to freeze, contact an HVAC professional.

Damaged or Overflowing Drain Pan

Another reason for water leakage could be a damaged or overflowing drain pan. The drain pan sits underneath the evaporator coil and catches condensation that drips from the coil. The water is then directed from the pan into the condensate drain line and safely away from the system. As the system ages the drain pan can crack, rust, and develop holes which would then allow water to leak instead of flowing properly into the drain line. A clogged drain can also cause the pan to fill faster than it can empty and eventually overflow. If water is puddling around the HVAC unit, the drain pan and condensate line are two of the first areas you should be inspecting.

What should the homeowner do?

If you happen to notice water around your indoor AC unit, you shouldn’t ignore it. Even if the AC still seems to be working, if it continues to leak it can potentially cause damage around the unit and could cause an HVAC problem that needs attention ASAP.

  • Turn off your AC if there is a significant amount of water to help prevent further leaking or damage.
  • Check your air filter for excessive dirt or buildup that could be restricting airflow.
  • Inspect the drain pan for standing water, rust, cracks, or signs of overflowing.
  • Look for ice around the evaporator coil or refrigerant lines, which may indicate that the system has frozen.
  • Contact an HVAC professional if the leak continues or you can’t determine where the water is coming from.

It’s best to avoid attempting to repair internal HVAC parts yourself. A trained HVAC technician can safely inspect the system and identify the source of the leak!

How to Prevent AC Water Leaks

Regular maintenance can help prevent many of these issues that lead to AC water leaks. Homeowners can start by checking their air filters monthly and replacing them when needed. The condensate drain system should also be checked and kept clear. Routine HVAC maintenance can catch clogged drains, damaged drain pans, and other small issues before they lead to leaks.

Dealing With an AC Leak in Austin?

If you’re dealing with an AC water leak in the Austin area, TemperaturePro can help identify the source of the problem and determine the right solution for your system!