Just a quick question. I currently work in a single car garage and trying to find a heater that would basically knock the chill off. I had a small mr heater that had about 9,000 btu. It could run a hour and i could barely tell a difference. I was thinking about a force air heater you see a construction sites. I wondering your thoughts about safety on somehting like this. I know it's not the safest but something that would probably be used litely for about 3 months out of the year. If not want would you suggest, below $100 for I am not staying in the house much longer. thanks.