Alright this is a weird problem, but everytime I run the water in the
kitchen long enough I get a horrible smell, probably sewer gas,
permeating my apartment. It also occasionally comes up even when I
don't run the water, but it comes every time if I run it for a few
minutes. The bizarre thing is the smell comes out of the air
conditioning ducts; the smell is much stronger when the AC is running.
It's been suggested that it might be a crack in the vent pipe, which I
guess makes sense. I've been on the roof and the pipe doesn't seem
clogged (at least where I can see it), and the trap in the kitchen sink
is newly installed.
1. Is there any way to pinpoint where exactly a leak is (if one
exists)? The AC unit isn't especially complex, and the ducts aren't
that extensive; I can see almost all of the duct length by standing on
a chair and shining a flashlight into the vents. I don't see any
possible leak though. The air conditioning unit on the roof for my apt
isn't close enough to the vent pipe to suck in any smells either.
2. Should I call a plumber or an AC repair person? Presumably a
plumber would be needed to actually repair any pipes, but I would think
an AC person would be better able to find the leak.
3. Is there a way to search for leaks without taking apart walls?
4. Is there any possible other explanation for the smell?
If at all possible, please post a response here, my email account is
inaccessible at the moment.
Thanks for any help anyone can provide.