That I know...

So why do horizontal condensate drain lines from AC units have a trap bend?
They connect to nothing but air.
The only thing I can figure is to keep insects and the like from crawling
into the unit.
But again, a trap bend in a vertical line connected to nothing would make no
sense...for either gas or insects.






co"Joseph Meehan" wrote in message
...
Curmudgeon wrote:
I'm selling a house where the indoor airhandler for the heat pump has a
vertical condensate drain that runs thru the floor into the crawl space.
It
was installed that way new.
Now, an inspector for the buyer lists that drain as a "fault" because it
is
not trapped.
Does a vertical drain need to be trapped.
I'm not going to replace it, but now I'm curious if the inspector's
right
or not.
Pro AC tech opinion requested ( since I dare not ask this question on
their
newgroup).

If it connects to a sanitary sewer, it needs a trap. That prevents
sewer gasses from coming back in through it.

--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math