My choice is an electric furnace that came out of a 2500 sq. house. Keeps my 750 sq. garage very nice and really doesn't run that much. The garage is insulated like the house and holds well. Electric was the choice because of the "no flame" feature. I just felt more safe with it. As far as the electric bill goes, I haven't noticed that much difference.
"Truckin' Around .......... Since 1937!" My name is Joe and I am addicted to Classic Country Music. I just can't hep myself. Operators are standing by to take your calls! Now cruising in the Passing Lane