I did some searching and did not find too much on the topic but did find a lot of people on here are using the G73 heater from Grainger. I was looking at the Radiant Cove Heater offered by them. Will it work the same as the gas fired tube heaters that I am use to in my last shop. Will it heat my 650sq ft garage in the winter and not cost me a arm and a leg? Any one have any experience in these or any other ideas. Was going to do a Hotdawg heater but love to do Radient if works good. 