How easy is it to do? Would it be cheaper on utilities to go with an electric furnace rather than gas?
Ok I didnt know location made a difference, so I live in Nebraska and right now its 30 degrees outside brrr damnit!
There are lots of factors that go into answering this question. How many square feet are you heating, how well is the house insulated,how long are you planning on living there,how old is your current furance etc. In general gas is cheaper. Sorry I could not be more help.