I installed a Panasonic FV11VQ3 110 CFM bathroom vent fan in a small
bathroom. Works like a champ. No steam on the mirror and within minutes
(with door or window open) majority of steam is cleared.

My one problem is this; I get standing water inside the fan. I wrapped
the duct work and unit with insulation; still condensation turning into
small pool of water. I check for leaks in the roof cap... none. I
switch the duct work from the stiff flexible/expanding type to the
smooth normal duct work; still get pool of water.

I researched google groups and some people recommended running the fan
before starting the shower to warm it up. I don't think this is the
issue because I did some "condensation" tests in the middle of the
afternoon and it was not cold in the attic. I will still try this
though. Also another person recommended having a door slightly open or
a window. I will do this as well.

Would anyone have any other suggestions in case this does not work? One
thing I will mention the instructions ask for 2-3 feet of horizontal
pipe before going to the roof cap and I have 1 foot due to space
issues. I mentioned this to some people with building experience and
said this should not cause a problem.

Thank in advance.