I've been messing around with it, and couldn't duplicate the smell condition, but wind direction had
changed. When I wired the room, I included a circuit for separate wired in ionized gas detection, and
carbon monoxide detectors, and am leaning toward just going with that.
You are right about air having to go/come from somewhere. I makes a great door closer right now.
Eventual plan for this room is a greenhouse off the side of it, and that is where the warm air will
exit to, so right now, with no place to go is worst case scenario. (I think)
How often I have to run it is up in the air as well. Last week we had four power outages in one
day, (4 hours total) but it had been 3 weeks since the last one. Not really an issue, unless it happens
to be -30C, which it wasn't.
Thanks for your thoughts though Ross. (as always)