In addition to cooling your home, an air conditioner removes moisture from the air to lower the humidity level inside your house. This excess condensed water is removed from the AC unit through a small drain pipe and deposited outside on the ground.
Over time algae, mold, and mildew can build up inside the condensation drain line and form a clog, causing water to back up and overflow inside the air conditioner unit. To prevent this from happening, pour a cup of bleach in the access opening in the drain line near the AC unit to kill any algae, mold, or mildew that has formed in the pipe.
Watch this video to find out more.