why-is-my-air-conditioning-leaking

Why Is Water Leaking From My Central Air Conditioner?

No doubt with the mugginess hitting us this week, the Tampa Bay area is in the full swing of Summer. With these 90 degree temps and the humidity high, your air conditioning must be working overtime in those daytime hours to keep your home or office comfortable.

If you haven’t had a checkup this year, pay attention to minor leaking around or water stains on walls and ceilings inside your home near your central ac unit. It could be the tell tale signs of a serious problem developing, which can lead to damage to your ac or, depending on where your central unit inside your home is positioned, flooding, dry wall damage, mold or a collapsed ceiling.

If you’re starting to see problems form, there could be a number of reasons why water is leaking from you AC unit:

Clogged condensate drain line or rusted condensate drain pan

If the drain line gets clogged by dirt, insects, mold, or anything else, the water has nowhere to go but back into the home. (Some home’s have a secondary drain line but that may also be become clogged.)

Use wet-dry vacuum to suck out the obstruction from the outdoor PVC condensate pipe.

Also the root of the problem may be a dirty evaporator coil. The dirt will mix with the water and fall down into the pan, clogging the drain. Have a professional clean this coil annually as part of an annual AC maintenance visit.

Also, the drain pan may be rusted through and is falling onto the floor and causing  damage to your home. So you’ll need to replace that.

Note: Your air conditioner may have a secondary drain pan to catch the water. This pan has a float switch that turns off your air conditioner to prevent water damage.

Installation issues

If you have a newer air conditioner, the problem may be installation related. An improperly designed condensate trap will stop the condensate from draining. So all that water builds up in the drain pan and overflows into your home, causing water damage.

You’ll need a professional to examine the condensate trap to see if it has been designed properly and fix it if necessary.

Frozen evaporator coil

Open the blower door of your inside AC unit. Is the evaporator coil covered in ice? When that frozen evaporator coil melts there may be so much water that it flows over the drain pan and then onto the floor.

There are 2 common causes of a frozen evaporator coil:

  • Dirty air filter—A dirty air filter blocks airflow over the evaporator coil, causing the temperature to drop below freezing and ice up. Check the air filter and change it if it’s dirty.
  • Low refrigerant— Low refrigerant causes the evaporator coil to become much colder than normal, causing it to freeze up.

To defrost the evaporator coil, turn the air conditioner off. Then turn the blower from “auto” to “on.” The fan should melt the ice slowly enough for the drain pan to handle all the water.

In the meantime, you should call a professional AC repairman to check your air conditioner to make sure it’s is working properly and ensure nothing was damaged.

There are a few major reasons why this happens, but primarily this can be prevented with regular maintenance. Before you get too deep into summer, let the Air Doctor make a house call to stop unnecessary and expensive damage to your home and your AC unit. Call us today, or use the handy form below to get in touch with the MD for your AC:

[contact-form][contact-field label=’Name’ type=’name’ required=’1’/][contact-field label=’Email’ type=’email’ required=’1’/][contact-field label=’Website’ type=’url’/][contact-field label=’Comment’ type=’textarea’ required=’1’/][/contact-form]

Leave a Reply