I installed a "Hot Dawg" propane heater in my shop and it does a wonderful job. I mounted it up on the ceiling out of the way, directing the heat to blow downwards at an angle.
Here is the home page, but they are sold many many places, even Amazon. Google for other places to buy. http://www.modinehvac.com/v2portal/page/portal/hvac/hvacResidentialDefault/hvac_com/residential_hot_dawg/level_2_content2_035.htm -Dj -- Dj Merrill - N1JOV Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/ Glastar Flyer N866RH - http://deej.net/glastar/