Quote:
Originally Posted by vintageogauge
If you run a gallon of hot water through the drain pipe monthly you shouldn't have any gunk in there. If you want to be sure add a little vinegar.
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I agree with RG123 that any thing you install needs to be easily removable and re-installable to be able to flush out the line completely. In my case my ac drain line plugged due to white slime...a gelatinous substance that was essentially a biofilm. It took 15 minutes for the wet/dry vacuum to suck out the white slime followed by a hot water wash. White slime forms in dark, cool, damp atmosphere which describes you AC condensate drain system.
I now use the vinegar wash, warm water rinse monthly as per above. So far no more drain issues for about 8 months
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If your thermostat suddenly goes blank, your condensate line has blocked up and the water sensor in the condensate pan has shutoff the power to the AC unit.