On Nov 15, 1:22 am, "Bob F" wrote:
"Christopher Nelson" wrote in message

...

I've heard of bathroom fans which have the blower at the top of the
duct, just under the roof rather than just above the bathroom
ceiling. And I heard a suggestion that they can be used to vent
multiple bathrooms with one blower. But I'm having trouble imagining
how that would be wired so it could be turned on in either of two
bathrooms. That's not a three-way switch.

You'll end up throwing out a lot of heat/cold unnecessarily.

Use timer switches and just wire them in parrallel.

Bob

I think you wind up throwing out a lot of heat/cold unnecessarily with
this approach regardless of how it's wired. The blower will always
be pulling air out of all the bathrooms anytime one of them needs the
fan on.

Personally, I think using quiet quality individual bath fans is the
better solution.