good point.

my shop is located in a rual area and the only way to heat is with propane, kerosene, electric. the old way was to use a wood or coal burner. but they have many drawbacks

my shop could use more insulation. I will try that first. thanks

would a 220 volt electric furnace preheat the shop and help heat the shop for painting. know of any electric furnaces that could put out enough BTU's?