Putting it outside like you did doesn't work up here Tom. I don't know how hard it would be on the motor trying to start it at 20 below of more. Plus you don't want it sucking the hot air out of your shop. And it blows too many fine particles to leave inside. I'm wanting to put the one I have like it outside but I have to build an insulated enclosure to put it in and then route the air back through a window opening where I can install enough filtration to get rid of the fines it blows out. Had I known better I would have done like Stick suggests and it would have been cheaper in the long run.