What Could Be Causing Your AC Unit To Leak?

There are three questions that come to mind when you realize your air conditioner is leaking. First, why does water form inside of your AC unit in the first place? Why is the water all over your floor? And, what do you need to do to fix the problem? As a homeowner, it is in your best interest to know the answers to these questions.  

Why Does Water Form in Your Indoor Unit?

Part of the air conditioner's purpose is to pull the humidity out of the air in your home. The inside unit has a blower that pulls all of the hot and humid air out of your home and returns it to the cold evaporate coil in order to cool the hot and humid air down. As the air conditioner does this, condensation will form on the evaporator coil. This is no different than condensation forming on a glass when you have a glass of ice cold water sitting outside in the sun.

The water that collects on the evaporator coil is supposed to fall onto the sloped drain pan and then go down the condensation drain. The action is very similar to a child going down a slip-n-slide water toy. The drain line (which is usually made out of PVC pipe) will take the water out of the home or into your home's plumbing.

Now that you have a clearer understanding of where the water comes from and what parts are involved, it should be a little easier for you to understand what is going on when something goes wrong and you have a leak.

Check the Condensation Drain Line and Condensation Drain Pan

It is possible the condensation drain line is clogged or the condensation drain pan is rusted. Either of these issues would make it difficult for the water collecting on the evaporator coil to pass through the air conditioning unit and out of the home. It is also possible that your home has a secondary drain line and this line could also become clogged.

You can use a wet-dry vacuum to try to suck the obstruction out. The easiest way to do this is where the PVC pipe exits your home.

The root of the reason why you have a clogged pipe could be a dirty evaporator coil. If the coil is dirty, the dirt will mix with the water that falls down into the pan and clog the drain. The easiest way to avoid this problem is to have a professional clean the coil as part of your routine annual AC maintenance check.

If the drain pan is rusted, it is possible that parts of the pan are coming lose and ending up in the water. This would also cause the blog. The only way to fix a rusty pan is to replace it with a new one.   

Even if you end up deciding to just call an air conditioning repair expert to fix the issue for you, it is in your best interest to learn more about your air conditioner unit. This way you will know what the technician (such as one from Pristine Air Conditioning Corp) is talking about when he or she tells you what is wrong.