I had a high-efficiency furnace installed in March of this year. Today I noticed water leaking from a section of the pvc exhaust pipe (which travels upward from the furnace, across the ceiling, and out of basement wall where it vents into my backyard). To be more specific, the pipe that comes out of the unit is attached to this leaking section, which is attached to a pvc elbow, then another piece of pipe, and so on. The water is coming from the top of the leaking section. I don't see any of the blue cement the installers put on the other sections. What could this be caused from? Is there an easy fix?
probably just sweat or condensation..you can cut and replace using pvc glue found at plumbing/hardware stores. it sets up fast so followi instructions.
maybe they forgot to glue it check to see if that leaking connection comes apart if it does turn off the pump that pumps the condisation out and glue it with pvc medium bodied glue and put together hold it for like thirty seconds them its good to go turn the pump back on and check for more leaks . unless they did not seal the opening where the pipe goes outside and the moistor or rain water is traveling in throw there
Replace the elbow with sch 80 PVC. Sch 80 fittings cost 10 times as sch 40 fittings. The value of the labor will more than make up the difference. If the leak turns out to be in the pipe, not the fitting, up grade to sch 80 for the pipe as well.
Put a level on pipe to be sure it`s sloping towards outside! It could be condensation, to repair, cut before and after leaking section, rebuild same as whats removed and replace with 2 collars. (dry fit) put it all together and in place, to be sure it will work, before gluing.
