Yes, they pull the air out of a room and if it's moisture laden, then it gets pulled out.............BUT not enough to be that effective. I put up expensive washable wallpaper in my spare bathroom. After taking a bath or shower the paper started to peel. So I added a piece of glass to the top of the enclosure, so it's totally enclosed, added a ceiling light inside the shower so it's not too dark.....problem solved. The moisture stays in the glass enclosure. :0) The mirror still fogs over when I get out, but no water runs off the walls like it used to.

Hi JM, The walls and ceiling are already up. These photos were taken before the ceiling and walls were insulated and sheetrocked. I was hoping the pictures showed something installation-related that was correctable. Susan

I know you said fantech won't work, but have you seen this version? Maybe? I can't find specs anywhere, but if it looks promising, you might want to check with them. Honestly, if you could make it work, you'll love this fan. Here is a link that might be useful: Fantech outdoor mount

Sycamore guy -- I'm sure the project would be over my head. As I said, the bathroom is on the first floor with no access to the outside. This duplex is a twin... there's another one right on the other side of the wall, so really the only option would be straight up through the roof, or else I'd have to somehow run a duct out the bathroom, through the bedroom on the surface (because of the fire wall between the two buildings), and then out the rear wall of the bedroom. As far as the roof goes, first of all that would require (I'm sure) chopping out the newly re-finished second floor bathroom wall, plus I don't do ladders higher than 6' stepladders so roof access is out of the question. There's no attic. Housekeeping -- I wasn't here when the ___?___ was removed. I never saw it. I don't understand the newspaper reference, though. The newspaper was just used as filler in the wall so that the wall could be plastered up, and yes, it's now all removed. Whether or not is was a dehu is an interesting question. I've never actually seen or used a wall mount dehu. Would it be "big and bulky", and possibly screw onto the threads of a 2" pipe that go up to the roof? If so, I'd be willing to guess that's what it was, and that's what it has to be replaced with. Thanks all for the quick responses!