In May when I first turned on my ac I had wet spot on my basement floor that came through my carpet. I had to put a condensate pump on near my furnace and water heater. That seemed to solve the problem until yesterday I noticed that the same spot as before is wet again and also around my furnace. What do I need to do?

RickJ

Somewhere coming off of your furnace is a drain tube for the condensation. Double, triple check that there is not a crack in the tube somewhere before it's output...and also check to confirm that it is outputting at a drain.

In short, I'll bet it's normal condensation that's just not going where it ought to.

labman

A/C condensate can be a pain. Too often the drains are too small with too many elbows to clog. When you must use a pump, that adds more to go wrong. If the pump isn't in the pan itself, the drain between them could be plugged or leaking. If it has a float switch, it could be stuck.

speedball1

In my area we run our AC condensate lines out of 3/4" PVC and terminate them outside the house to drip on the ground. It's illegal to connect condensate lines, storm drains or roof leaders to a sewer line. AC condensate lines grow a kind of jelly in them and stop up. When that happens we clear the line out by shooting compressed air through the line and then closing off the end, filling the line up with bleach and letting it set for a few hours and then blowing it out again. Hope this helps with your problem. Good luck, Tom