My clothes dryer vent goes up into the attic and then travels about 25 feet
before exiting the house. The attic is vented to the outside, so sees
roughly the same temperatures as the outisde temperature. In the winter we
go as low as maybe 5 below zero F. I've read on the net that the vent
should be insulated to prevent condensation in the tube. However, the
company hat installed it last year did not insulate it and didn't think it
Who should I believe? And if it should have been insulated, what kind of
insulation is recommended?
I think so too. I had lived in a house with such a long dryer vent for
some twenty years without knowing it. I had had to replace the drum
belt so many times and the dryer motor often enough. I finally
realized that the dryer did not get vented at all because the dryer
motor was not strong enough to push the air all the way through the
I installed a booster motor near the roof, and I've saved good sum of
money by now wasting gas(it takes a lot less time to dry clothes) and
not replace motors and drum belts.
I was the original owner of the house which was built by a reputable
builder. I can't believe the contractor did such lousy job without
installing a booster motor. Noboy told me the vent took a long and
tortous route before it ends just above the roof. There were literally
tons of wet lint in the vent when it was opened after some twenty
What is the vent pipe made of? If its aluminum I would think that you
could get away with not insulating unless you are afraid that the
condensation would cause lint build up which is a fire hazard. But you
need to vacuum out your vent pipes yearly anyway.
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