Quoted from pinzrfun:
i ordered this thing a couple weeks ago because the wife wanted to do some straightening up in the garage over the winter. Attached garage, insulated (aside from the door). 40,000 btu's. Tried it out the other night on the first real cold night, -6 outside, 26 degrees in the garage when I fired it up. 90 minutes later it was 59. Super happy. Be nice to throw on the back porch in the fall or even take to a tailgate ?party.
Is it safe for indoors?
I have a kerosun heater and I hate the fumes