Air Conditioner Not Cooling: Float Switches and Drain Pipe Clogs

Hi, this is Wayne with Sears Parts Direct. Is your central air conditioner not keeping
things as cool as it should be? Here’s something to check before you make
that call for service. Many central air conditioners have a drain
float switch that shuts the system down if the drain is clogged and water backs up under
the evaporator. If this switch trips, the air conditioner
will shut down to avoid water damage. If this well under the switch is full, then
it's time to unclog the drain line. You may be able to remove the clog with a
shop vac. If not, you can use a plumber's snake to clear
the drain line. To keep this thing from clogging up in the
future, pour a cup of liquid bleach down the drain vent tube every month. The bleach kills mold and mildew that can
build up inside the drainpipe and hose.

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To keep from killing the grass in your yard,
stick a pan under the drain hose outside to catch the bleach as it runs out. And always remember to protect your eyes and
skin when handling bleach and other harsh chemicals. You can get in the habit of doing this at
the same time you change your air filter. You remember to do that every month, right? Hey, thanks for watching. I hope this video helped your out today. Be sure to check out our other videos here
on the YouTube Channel and don’t forget to subscribe..

As found on YouTube

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