How to Repair a Swamp Cooler that’s Sprung a Leak – Part One

Dry climates are the best to employ evaporative coolers, which are also widely known as swamp coolers, as an energy efficient method of cooling your home. However, as with all other appliances, there is maintenance that is required, or you are likely to run into some problems. If your swamp cooler springs a water leak and saturates your roof, there is a possibility that you will have to replace your roof along with the malfunctioning swamp cooler. There are six places that your system can leak from aside from any physical damage it has endured. Let’s go through these spots that may have sprung a leak to give you some ideas on how to mend your leaking swamp cooler system.

Water feed line

A common area that can loosen up and may cause leakage is the water feed line. There is a point where a copper water line meets your cooler’s housing. There are three potential culprits.

  • The rubber gasket needs to be replaced
  • The float valve either needs tightening or replacement
  • The compression nut needs to be tightened

Float valve inlet

Your water leak may appear to be coming from the water inlet at the float valve, if so, it is possible that the water intended to be pushed into the reservoir is losing some and spraying on the outside. If you lift the float arm, you can determine if the water being dispensed is spraying into the reservoir. You can adjust the float valve to be directed farther away from your reservoir’s boundaries if not.

Front of swamp cooler

It is actually quite typical for harmful damage to occur to the front screen cover of a swamp cooler because of scale buildup and rust. To check for this, you should look over the front of your cooler at the pad. One of three things are likely to have happened here.

  • The distributor housing has become warped and can no longer fit snugly over your cooler pad. This causes the water to spray out.
  • The top of the pad can be so encrusted with scale that water tends to cast out off of it.
  • The front of your pad can become crystalized by scale to the point that a bridge is formed between the pad and the front screen of your swamp cooler. This will enable water to escape freely out of the front of your cooler.

Should any of this occur, it is time to replace either your distributor housing or your pads.


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