I recently moved into a house with a 10 year old jotul gas stove as the primary source of heat. I am going to be replacing the gas stove with a Castine and was considering installing another propane heater for back-up heat, to prevent the pipes from freezing when we go out of town. However, both the stove and heater would be on the first floor of the house and the pipes are in the crawl space. So, neither heating source will protect the pipes all that well. If I need to install heat tape in the crawl space anyway, could I just install electric baseboards only in the rooms with plumbing (laundry room, kitchen, bathroom)? Alternatively, could I get away with just heat tape and no back-up heat? I live in Maine. The house is about 1100 square feet and decently weatherized.