My woodworking activities occur in my garage, which is (currently) unheated.
I'm considering building a sub-micron air filter. My neighbor is an HVAC
guy and could get me a blower for nothing. Is there any benefit to using an
air filter vs. just exhausting the air outside? I think I would see the
benefit if I heated the space in winter, which I'm considering this year, of
not exhausting warm air outside to be replace by cold air..