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Home Care Library

Central Air Conditioning

The Home Wizard app calculates your ideal home care program to avoid problems with your Central Air Conditioning, but sometimes trouble can still occur. Here are answers to questions about central air conditioning clogged drain.


The condensation drain on my AC unit is clogged. Condensation is currently draining from the secondary drain. How do I clear the clog in the primary drain?


Dear Roblewiii:

If your condensate drain line on your air conditioning unit has gotten plugged, here are a couple of things you can do to clear the plug out.

If it is not plugged too badly, you can attach a wet/dry vacuum to the discharge end of the pipe, and use the wet/dry vacuum to suck out the gunk that is plugging your condensate drain line. Here is a video which describes how to do this:

If your condensate line has gotten very plugged, then you can cut the line near the air conditioning unit, and add a connection so that you can use water pressure from a garden hose to blow out the plug.

To prevent this plugging from happening in the future, then every 6 months you should add a little bleach into your condensate drip pan, to help keep the gunk from building up.

Hope this is helpful.

Central Air Conditioning