Why Is My Air Conditioner Leaking Water?

July 29, 2014

Your air conditioner is effective at keeping your home cool. Not only does it remove heat from the air, but it also extracts excess humidity. The result is a cool, comfortable home.

Unfortunately a maintenance issue may put a damper on this picture-perfect situation—what do you do if your AC starts leaking water? The moisture that the AC collects may cause some condensation to form inside the unit, but leaking indicates something is else wrong. Here are the possible reasons your AC is leaking water and what you can do about it.

For emergency AC repair in the Cincinnati, Ohio area, call Rick’s Heating & Cooling today!

The Pump Is Broken

When your central air conditioner is working properly, it drains away excess moisture without a problem. Water passes through a condensate pan and is pumped down a drain.

To test if the pump is working, pour water into the condensate pan. If the water pools and doesn’t drain away, you have a problem. First make sure the pump is receiving power. If power isn’t an issue, you need to consult with an air conditioning contractor for professional repair.

The Condensate Drain Is Blocked

A blockage in the drain is another common cause of a leaking air conditioner. Water can drain improperly when debris makes it way to the drain. Blockage can be caused by:

  • Algae
  • Fungus
  • Mineral deposits
  • Dirt
  • And more

It’s best to leave the unclogging process to a professional to ensure it’s done properly and without causing additional damage to your unit. After unblocking the clog, the technician can apply a special algaecide treatment to prevent this type of growth in the drain line. Be aware that other types of blockages can still occur, so keep an eye out for future leaks even if you choose to have this treatment performed.

The AC Was Installed Incorrectly

In order to drain properly, air conditioners must be installed on a completely level surface. A slightly tilted installation could be the reason your AC is leaking. A more experienced contractor may be able to level out the unit for you to put a stop to the problem.

Too Many Vents Are Closed

You may attempt to save energy by closing the supply registers in unused rooms. This is acceptable as long as you don’t close more than 20 percent of the supply registers in your home. Doing this could cause pressure inside the air conditioner, resulting in leaky valves that let water escape from the unit.

Walk around you home and count the number of supply registers that are open versus those that are closed. Make sure no more than one out of every five registers is closed at a time.

The Outdoor Temperature Is Too Cold

When the temperature drops outside and the AC continues to run because interior heat gain prevents your home from cooling down sufficiently, water around the outdoor unit may not evaporate properly. Keep an eye on the water accumulation. Warmer temperatures should reverse the pooling effect. If not, the outdoor temperature isn’t the cause of the problem.

There Are Leaks in the Internal Seals

Warm outdoor air can make its way through loose seals. When this happens, water vapor condenses and pools around the outdoor unit. An HVAC contractor can reseal the unit and close it off from the outdoor air.

Schedule AC Repair in Ohio

If your air conditioner is leaking, it can not only potentially cause water damage to your home, it also reduces efficiency and increases what it costs to keep your home comfortable. To schedule AC repair and fix the water leaking problem in the Cincinnati, Ohio area, contact Rick’s Heating & Cooling online or call us at 513-899-6005!