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).