How to Check for an Air Conditioner Water Leak

Air Conditioner Water LeakWhen your cooling system is working at its hardest, you may notice wet spots near the indoor or outdoor unit. In many instances, this is normal condensation and no need for concern. However, there are other times where an air conditioner water leak is a sign of a substantial problem. Here’s how to tell the difference.

When It’s No Big Deal

Again, a small amount of condensation is normal, so if you see a small air conditioner water leak near the outside unit, or near the indoor unit’s condensate drainpipe, that’s just an indication that your system is working hard because it’s a very hot day. However, you need to keep an eye on it; if the leak keeps getting larger every day then you probably have a more serious issue.

When It’s a Sign of a Problem

Typically, water leaks occur in three areas: the condensate line as mentioned above, the air filter, or the overflow drain pan. Here’s more information on how to check these three areas.

  • The overflow drain pan – Take a flashlight and look for any cracks that may have developed, paying special attention to the edges and corners. If you see a small crack or hole, you may be able to fill it with epoxy glue. However, if you see a larger hole you’ll be better off getting a new pan.
  • The air filter – As we’ve noted before, it’s very important that you change your air filter once a month during cooling season. If the filter is dirty, air won’t be able to move properly across the air coils and ice will form. When the ice melts, of course, it will drip water.
  • The condensate drainpipe – If this line is clogged water will back up into the pan and ultimately spill out. If you have a newer system it probably has a cutoff switch designed to shut the unit down if the drainpipe becomes obstructed so that water damage does not occur.

If you still find that you have an air conditioner water leak after performing the recommended checks, get in touch with a professional to see if you have an issue that requires service. Contact Metro Express Service online or call us at 972-263-2500 to schedule an appointment.


Randy Murphy

Randy Murphy has been building his knowledge of the air conditioning and heating business for several years now. He first started applying his knowledge while working for his father’s HVAC company. Later, in 1987, Randy started his own business: Metro Express Service. He has been a top 10 Trane & Amana dealer for over eight years. When it comes to heating and cooling, Randy knows the business better than anyone.
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