Why Air Conditioning is Leaking Water

A water leak indicates that something is wrong with your air conditioner. You should find out the cause and resolve the problem right away before it gets worse. Here are some possible reasons why your air conditioning is leaking water:

1 – Clogged Drain Line

If there are clogs inside the drain line, the water will overflow eventually. Things that may clog it are dust, debris, and mold. A clogged line is easy to fix by flushing out the drain line. If there is any mold in it, you should figure out how to prevent it from growing back.

Such an issue is one of the many reasons why you should never underestimate the importance of regular maintenance of your AC. The packaged service usually includes cleaning the drain line to prevent a damaging clog.

2 – Dirty Air Filter

When dirt is built up in the air filter, the air won’t be able to pass through and reach the evaporator coils. As a result, the coils will get cold and freeze. Eventually, that ice will melt into water and drip. If the air filter on your AC is dirty while the unit is dripping water, try changing the filter and see if the problem persists.

Experts always recommend replacing your air filter every six months. Not only will this prevent the coils from freezing, but it will also allow your system to perform at its best.


3 – Leaking Refrigerant

Refrigerant should stay in a closed loop. But if it somehow leaks, you need to contact a professional HVAC service as soon as possible. Have them measure the refrigerant level in your AC unit and ask them to fix it immediately if they find any leaks.

The Freon gas can be harmful if inhaled. Hence, delaying in contacting an HVAC service might lead to terrible consequences. You should never attempt to fix it yourself. This might do more harm than good, and it is also illegal in some states.

4 – Improper Installation

A newly installed AC should have no problems with operation. Therefore, if it is leaking water, most likely it was not installed correctly. It is time to call back the company that installed your AC. The sooner you call, the better, especially if the service includes a warranty.

This kind of problem is easy to avoid by hiring only certified professionals to install your AC unit, preferably ones who offer a warranty. Right after the installation, make sure to run a thorough test before your technicians leave. Most repair jobs for a leaking AC unit require a professional to execute.

However, by understanding the culprit and knowing the theory of what to do, you will be able to evaluate whether your technician is doing their job right. Learning about why your air conditioner is leaking water can also help you prevent it. Overall, simple regular maintenance at least once a year should be enough to protect your air conditioning system from various problems, including water leaks.



ECM Air Conditioning, with its headquarters located in Boynton Beach, FL, provides air conditioning services within Palm Beach County, Broward County, Martin County, and St. Lucie County. If you’re looking to have a new HVAC system installed, we’re on-call and ready to assist you. So if you’re in need of an HVAC installation, don’t hesitate to contact us today to schedule an inspection! Our HVAC installation experts will check your ductwork, measure, check wire sizes, and more before making recommendations to ensure maximum efficiency and comfort. Call us at 561-295-1763 or contact our HVAC installation team online by clicking here.


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