Dry Flex
I'm building a house and my a/c returns are flex.It rained so the flex got water in it.Is the wet flex ruined?
The returns are flex. I unhooked all the runs that had water and drained them, leaving it unhooked to dry. I'm concerned about mold in the future. Should I replace it all at my expense?
I honestly don't think you have anything to worry about. Just let them dry out. Mold usually occurs where there is a moisture problem. What you explained was a one time thing, not a recurring problem that would assist in mold growth. Also, mold needs organic material to feed on. This is new (metal or poly?) flex pipe, hardly the environment to promote mold.
You have to remember that, all the thousands of houses being framed across the US everyday, get rained on during the construction period. All the wood framing, much more susceptible to mold than metal or plastic, get thoroughly drenched, dry out and never becomes a problem, because once it dries out, there is no more moisture problem.
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