When I was looking for a heater I looked at just about all the different methods for heat. I did not want anything to take up floor space. I did not want to have to vent anything and I did not want any flames.
I mounted this on the ceiling on a frame I built. It blows right on the work space and it will heat the garage up enough to work in total comfort in a t-shirt and jeans in 15 minutes. It cycles on and off as needed depending on what you set the dial at. I never go above 1/2 way. I do not even notice a difference in my electric bill. It has zero fumes and needs no ventilation. It is perfect for my needs.
I can slip it off of the frame and set it on the floor if I needed to. I have not needed to as yet. I just love that heater every winter.