Your Garage Heating System

Since I can't use any combustible fuels in the shop, I have an electric ceiling-mounted Dayton. It's kind of like this one but has two elements ..... http://www.heater-home.com/product/D-F79.aspx. It works so well in the 1,200 sf building that the second element and fan have never once turned on. :-D It runs on single phase, cycling on for about 10 minutes out of every 40 or 50.