I have a slow (but running) condensate line. I've sucked it out with a shop-vac, and had an A/C tech blow it out. However, each time it works for about a month, then completely stops up.
I'm starting to pour some bleach/water down it for the next few days to try and open it up more, but is there something better? I'm sure it's full of sludge, and only has a tiny hole where the water gets through.
This is a 3/4" PVC condensate run from the attic into the basement... has some 90 degree turns, etc... so I don't think I can snake it mechanically. When I pour a gallon or so down the drain, it takes 10 minutes or more to drain out (to the basement).
Thoughts? (I was considering foaming/gel types of liquid plumbr... but always heard never use that stuff.)