"mac davis" wrote in message
In my case, outside air isn't an option, as this setup would be when it's
WAY
too hot and humid to work outside..
My shop is actually a large room in the house, so I guess I'd be drawing
replacement air from the great room, which is a lot cooled than the shop..


mac

And then the great room air is replaced with hot air from outside. If you
are paying to run an AC, it may run into quite the expense.