Reasons Your Central Air Conditioner Leaks Water

Picture this: The temperatures have reached 90 degrees and as you go to crank up the A/C, you notice a pool of water forming around your inside unit. What should you do? Before you panic, educating yourself about some of the reasons your air conditioner leaks water might give you a better understanding as to what to do.

What might be causing this?


A clogged condensate drain line or rusted condensate drain pan: Drain lines can get clogged by dirt, insects or even mold, and when that happens the water has nowhere to go but back inside. Using a wet-dry vacuum can be helpful in sucking out the debris and clearing the obstruction. A dirty evaporator coil might also be the culprit in your clogged drain. Scheduling an annual A/C maintenance visit, will help avoid this problem and can also spot if a rusty drain pan needs to be replaced.


Frozen evaporator coil: If your evaporator coil is covered in ice, as it melts, water can overflow from the drain pan onto the floor. What causes an evaporator coil to freeze? A dirty air filter or low refrigerant are to blame. Make sure to keep an eye on these to prevent potential leaking. To defrost the evaporator coil, turn off your air conditioner and then switch the blower from “auto” to “on.” The fan should melt the ice slowly, allowing the pan to be able to handle all of the water.


Installation issues: An A/C unit that was improperly installed can be related to your pesky water problem. A professional can determine if your condensate trap was accurately designed, and perform a repair if not. Water that builds up in a drain pan, overflows into your home and can cause serious water damage.


Water damage in a home is not only bad for your health, but can be really expensive to fix. Don’t let this happen to you! Turn to the trusted professionals at A.B. May to perform routine maintenance or an emergency repair. Give us a call at 913-370-4898 for all of your air conditioning service needs.