Air Conditioners Create Condensation. How to Avoid Water Damage When Running Your AC

Published on: August 23, 2012

In order to keep your home comfortable during the hot summer months, you’ll need an AC system. Unfortunately, air conditioning units create a large amount of condensation, which may cause water damage to your home. With regular maintenance, you can prevent harm to your residence.


When you own an HVAC unit, the device includes an evaporator coil, which is usually in your attic or a large closet. During the operation of your unit, the device will emit moisture and send the water through the system’s main drain line. If a clog should form in your line, then an emergency drain pan will capture drips. However, water can overwhelm the pan and cause leaks.

With air conditioning maintenance, we will inspect your line. If we see dripping, then we know that your system has a clog, and we’ll take steps to eliminate the problem. You should review your lines as well since a clog can cause your system to back up, which will result in water dripping through your ceiling or down a wall.

Other Evaporator Coil Mishaps

A clogged drain line is the most common water-damaging occurrence. However, several other issues can create water problems such as burned contacts, which you’ll find on the condenser unit, dirty coils and limited refrigerant pressure. With low refrigerant, your unit’s evaporator coil will work extra hard and create more moisture.

Another issue regarding reduced refrigerant is that your coil may freeze, and when the unit defrosts, it will increase the amount of water in your drain line, which can also cause leaking.

Preventing AC System Water Damage

You should consider requesting an annual inspection as our air conditioner maintenance crew will thoroughly assess your unit for problems. In most cases, we can locate a leaking problem before it causes damage to your home. We can also treat your system for the growth of algae, which will prevent the substance from growing and prevent clogs. Your system may have other clogging problems from mineral deposits, rodents and bugs.

You should change your air conditioner’s filter regularly. In fact, you may need to replace or clean the mechanism once a month. Keep an eye on your home’s landscaping as overgrown areas near your unit can restrict airflow. With limited airflow, your system will become overworked and freeze.

Be sure to check your AC system regularly, and if you spot water dripping from the emergency drainpipe, then shut off your unit and contact our air conditioning maintenance department for assistance.

A Safety Float

When we install a safety float device, you’ll have a safeguard against water damage. If water should collect in your unit’s drain pan, then a safety float switch will automatically turn your AC unit off. With your system turned off, the temperature in your home will increase, and you should call our repair department for an inspection. Once we determine the cause of the water, we will repair the issue and reactivate your unit.

With routine air conditioning maintenance, you can prevent water damage from happening to your home while helping your AC system last longer.