Depends on who pays your electricity, you or the campground. If it is the campground, then the electric heat is your cheapest way. Even if you pay the electric bill, I am not sure bottled gas is cheaper than electricity when you are on the road. A 30# bottle of propane costs me $22.00 to $30.00 here in Durham, NC.
We are using it at the rate of a bottle every week to 10 days and it hasn't really gotten cold yet. We are looking for ways to add electric heat. Ozz has a great modification. He added a low profile, fan driven wall heater. If I were a better electrician, I would do that mod.
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