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Why is My Air Conditioner Leaking Water Inside?

Posted by Economy Air Heating & AC, LLC on June 23, 2017 at 1:55 PM

One of the most common questions we are asked is, "Why is my air conditioner leaking water inside my home?" There are many reasons why this could be happening and we will discuss some of them, but first it is important to turn your thermostat to OFF to prevent any damage to the electrical components of your system and water damage to your home.


Why does water form in my air conditioners inside unit?


Part of the systems job is to pull humidity out of the air. The systems blower pulls the hot air through the return and blows the warm air over the cold evaporator coil to cool the air down. This causes condensation to form on the coil. The moisture them drips into the coils drain pan and down a PVC condensate drain line that leads out your home.


Here are a few reasons that can cause water to leak into your home:


Clogged condensate drain line


A clogged condensate drain line is the most common cause for water leaking from your air conditioning system inside your home. If the drain line gets clogged with dust, dirt, sludge, mold, bugs, etc, that water backs up into your home. In that case, you will need to unclog it or have a professional come and unclog it. There are multiple unclogging methods, like using a wet/dry vac on the condensate line. But if you want to ensure the line is cleaned out it is best to have a professional come and clean out the blockage.


Dirty air filter


A dirty air filter blocks airflow. When that happens, the evaporator coil gets too cold and freezes over. When it melts, it drips an excess amount of water that the pan may not be able to handle. Check your air filter to see if it’s dirty and change it if needed.


Low refrigerant


Similar to a dirty air filter, low refrigerant will cause the evaporator coil to freeze over. When the coil melts, water overflows the drain pan.


Damaged / Rusted drain pan


The drain pan may be damaged or rusted through, so water just leaks through. If this is the case you’ll need have your drain pan replaced.


These are just a few of many issues.


Need immediate help? Contact us online or call us at 334-524-5328 to schedule an appointment today.

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