Pro Handyman Blog

A swamp cooler holds water for the entire time it is in use. If you have a leak, it is time to inspect it. You need to determine where the leak is coming from. A common source of a leak is the drain and overflow kit.

The bottom reservoir in the swamp cooler holds several inches of water. The drain and overflow kit is a small assembly that allows you to drain the water from the bottom of the cooler. It also will drain water if the water level becomes too high. If the leak is coming from this area, pull the tube from the assembly to drain the water and then try to reseat the tube. If that doesn’t stop the leak, it might be time to replace the assembly.

Unscrew the bottom nut from the assembly and the top will lift out. Clean up the area where the drain sits so that good contact is made when you reinstall the new one. Place the rubber washer over the threads and secure it with the nut on the bottom. The drain tube pushes down into the assembly. Refill the reservoir and check it for any leaks.

When you refill the cooler, adjust the float valve so that there is between two and three inches of water in the bottom of it.