If you depend on an evaporative cooler to keep your house cool during the summer, you may have noticed that it is no longer keeping your home at a comfortable temperature. If so, the issue may be caused by one of the following two problems.
Not Enough Air Flow through the House
Unlike a traditional central air conditioning system that has a hot air return vent, an evaporative cooler relies on exhaust vents to force the hot air out of your house while the cool air is pushed in. If there is not enough air flow, the heat is trapped inside, sabotaging the efforts of the cooling unit.
If the exhaust vents have become clogged, the hot air cannot escape. No matter how hard the cooler tries to force cold air into your home, the hot air will keep it from coming in.
To see if this is possibly the issue, open a few windows an inch or two and wait a couple of hours. If the house seems to get cooler, the vents are a likely culprit and will need to be cleaned out by a professional to keep from damaging the vents.
Water Line in the Cooler Is Leaking
If you do not see any difference in the air temperature after opening a few windows, the next possible issue could be a leak in the water line that feeds the cooler. Since the evaporative cooler relies on a steady water supply to cool your home, a leak can reduce the amount of water needed to work.
Inspect the outside of the cooling unit to see if you find evidence of a water leak. You may see puddles of water around the base of the cooler. If not, the leak could be inside or hidden.
Turn off the unit, and open the access panel. Check to see if you find mold or mildew growing inside the cooler. If so, there is likely a leak in the water system that will need to be repaired by an HVAC and plumbing contractor.
If you suspect that the issue with your evaporative cooler could be one of the problems discussed above, you will need to have a professional look at it. Contact an HVAC contractor, such as AAA Home Services, that also works with plumbing to have them come out to inspect the unit and the water system. They can then diagnose the problem and discuss your options for repairing it.