Why is Your AC is Leaking?

Posted by on Jun 7, 2017 in technical writing | No Comments

Discovering a leak in your air conditioner system is no day at the park, and it’s not always easy to diagnose the issue that could be causing it either. Whatever the reason, dealing with it in a timely manner can save you big headaches and big bucks in the future. If left unchecked, leaks can do serious damage to a structure due to water damage, mold and electrical hazards. There are several common things to look out for that might help you determine the reason before calling in a professional repair person.

Damaged Drain Pan

Over time your condensate drain pan may become damage due to the elements, and if it does, it can’t perform its function properly which is to hold water that leaks into it. Things like rust, dirt, algae and other types of debris can degrade the pan and cause it to leak. If your pan is damaged, you will definitely need to get it replaced. Some small cracks in the pan can be fixed with epoxy, but more often than not, it’s best to just get a new one.

Air Filter Needs Replacement

If your air filter becomes clogged, proper airflow to your evaporator coils is restricted. This is one thing that could contribute to your coils freezing over, and when they finally do melt, the excess water drips into your drain pan and causes an overflow. It’s best to change your filter every month during the warm weather season, or when the unit is constantly being used

Drain Line / Condensate Line is Blocked

This is probably the most common reason your A/C would be leaking. The line can become clogged with dirt, mold, insects, algae and other things limiting water drainage. This blockage causes a buildup of water that has nowhere else to go but inside your home.

Faulty Installation of Your A/C Unit

If your drain line was improperly installed, it will loosen over time resulting in the line not having a secure connection to your air conditioner. This would eventually cause a leak. Make sure you hire experienced professionals to guarantee issues won’t arise from faulty installation.

Evaporator Coil is Frozen

If your evaporator coil builds up condensation and that water freezes, it’s going to signal a problem for the unit. The coil can freeze up and the ice will travel all the way down the refrigerant lines to the outside unit. When that water melts it will inevitably leave water to pool in unwanted areas throughout your home.

Refrigerant Charge is Low

This is another reason for low air pressure in the unit. It causes a similar result to a having a dirty air filter, which directly affects your evaporator coils. If there’s not enough refrigerant in your unit, it won’t do the job of keeping the coils warm enough and they could freeze over. When the unit shuts off and the ice on the coils melt, it will cause a water leak. This is a big problem if the unit is above ground and the leak goes into the ceiling or attic.

Duct Work Needs Repair

If your AC duct work was not insulated properly or at all, it will allow condensation to build up on the ducts and leak in your attic. This is also referred to as ‘sweaty ducts’ and can cause some serious problems like mold infestation and water that leaks through the ceilings. Treat this problem right away if you notice it, and remember to always hire a reputable AC installation specialist so that the job is done in the most professional manner the first time around.

If you still can’t diagnose the problem after considering the above guidelines, then it’s best to call a restoration company to come in and take a look. It could save you some serious cash if you can catch the leak in time, and prevent it from causing worse damage in the future. Good maintenance of your AC unit is the key to preventing leaks. Following general guidelines such as changing your filter on a regular basis, and the ones that are listed above can go a long way in keeping your unit in tip top shape.