having a garage built very soon and will need some heat out there. Was wondering what all of you use for heat in your garage shops? I live in the northeast (near Allentown,PA) and need a pretty serious heater(or furnace). I am considering propane,possibly a Modine hot dawg heater, but wont rule out other forms of heat(except maybe electric) I will be insulating the walls and ceiling with as much as I can get in there.Hopefully R-38 in the ceiling and R-15 high density fiberglass in the walls(2 x 4 construction). Still pondering the use of 2 x 6 walls to get R-19, but dont know if I would realize any greater cost savings in heating by doing this.