When air circulates over your AC water blockages unit’s evaporator coil, it creates condensation that normally drains to the drain pan. Occasionally, that moisture picks up dirt and debris from the environment around your house, and over time this can cause the clogging of your AC drain line.

The dark and damp atmosphere in the drain line also provides the perfect conditions for the growth of organisms like mold and algae, which can also contribute to a clog. The good news is that most of these AC water blockages are preventable with regular maintenance and by staying vigilant for warning signs.

How to Prevent AC Water Blockages and Keep Your System Running

One clear sign of a clogged AC drain line is the presence of pooling water around your unit or in the immediate area. This can be caused by a number of things, including a blockage in the drain line that is preventing the normal flow of condensation from your AC unit to the outside drain. If you notice a pool of water, or water spots on the walls or ceiling nearby your AC unit, this is a sure sign that it’s time to call in an expert to unclog your drain line.

Once an expert arrives at your home, they will likely begin by shutting down your AC unit and identifying the location of the drainage pipe. After removing any visible debris from the drain line opening, they may use a wet vac or plumbing snake to remove the clog. Afterward, they can often test the drain line by pouring a small amount of clean water into it and observing whether it flows freely or not.