Red

yes. i have a few heaters..i normally smoke in the shed in the winter..but its too full this year , the shed was cool but all the smoke was trapped in and i felt like i was dead when i got out..

if i tried to blow the smoke out all the heat went with it...

will check out something for heat recovery...theres no way to put a window in my garage...the way its build is not fit for it unless i wanna spend more than i have