Monday, October 24, 2011

New AC unit keeps getting clogged?

My new AC unit (purchased in 2007) started leaking the first time I changed the air filter, which was only 2 months after I got it. A repairman checked it and said the pipe was clogged. I dont' know how he fixed it, I wish I would have asked.



About 2 months later, I changed the filter again and it started leaking again. I am not sure why this happened.



Anyway, I started researching and figured out how to fix this problem myself by bringing hose inside and flushing out the pipe.

It works wonderfully now.



The thing I want to ask is,why is this happening to a unit that is brand new?

Why is it leaking only when I change the filter? The repairman said I am using the correct one.

My old AC unit was 15 yrs old before I had to replace it and it NEVER leaked!

Could it be just like they said 'they don't make em as good as they use to' which means EVERYTHING.New AC unit keeps getting clogged?The reason for this is where does that PVC pipe run, can all the pipe be replaced? If not the pipe is as old as the house. New A/C systems are clean and they make more water than the old equipment. I have a A/C company in South Florida and give no warranty on drain lines for this reason. You can pour foaming type of coil cleaner down the pipe to clean out. Be careful with too much pressure on that pipe some A/C guys do not glue all the fittings and if one pops in the wall what a mess. A wet dry vacuum is a good choice.New AC unit keeps getting clogged?possibly due to sudden stop and start of the unit. When you replace the filter, you possibly turn off the AC unit causing condensation on the piping, then you probably turn On the unit after putting the new filter causing the condensed water to freeze up. If this is the case, wait for at least 1-3 hours before turning On the AC after replacing the filter. Or if you can replace the filter while the unit is On (must be careful with this otherwise the filter will be destroyed).New AC unit keeps getting clogged?Something was not done right with the drain.

Probably too small of a drain line, wrong pitch, improperly trapped.

Most all companies provide a one year warranty on their installation, call the company and talk to the owner or manager and have them explain the problem.

Proper installation is the key to a trouble free system.New AC unit keeps getting clogged?The condensate drain pipe, which is what is clogging, will grow mold which attracts dust and clogs. Several years ago my AC man told me to pour a little Clorox (bleach in the drip pan or directly into the drain pipe. This keeps it from growing mold and prevents the clogging. Do it about two or three times during the AC season. Haven't had a problem since.
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