"Bob" wrote in message
oups.com...
Thanks for the quick input. To be clear the condensation is happening
inside the fan itself, the duct work is bone dry except where the
"male" duct part of the fan receives the "female part" of the duct
work. The water inside the fan will drip onto the duct connection,
other than that dry. As far as inulation the fan unit is wrapped and
the duct work as well.

Also I have not sealed the joints with water proof tape due to the
constant removal and installing for troubleshooting. Can this be an
issue as well?

Pipedown, if all else fails I will move the fan 1 1/2 feet to meet the
specs. I'm hoping after that undertaking that the problem will no
longer persist.

So it seems these are the standar remedies for condensation in the
bathroom fan:
- Insulation is needed around pipes and fan
- Open a window or door slighty to allow better air flow.
- Turn fan on a few minutes before shower to warm up fan and minimize
condensation inside of unit.
- Let fan run for a while after to evaporate all steam in unit and
duct work.

I will try #2 and #3. If this fails I will reposition the fan to allow
for a longer horizontal run as recommended by the manufacturer.


I'm wondering if you have good air flow? Have you checked the outside vent
to see if air is actually coming out when the fan is on. It is possible
that the vent flap is stuck. If you are using flex duct check to make sure
that it is not crushed anywhere. Are you able to see the fan blade spinning
at high speed? Make sure that the damper on the fan is opening when the fan
is on.