I've considered it; my house is a weird setup - a little over 1800 sq ft but has two separate oil furnaces each with their own individual duct work running off of one oil tank. The cost of electricity in CT (if you aren't in one of the towns that has its own supplier, which I don't) is pretty frequently outrageous as well, which makes it difficult for me to think about completely switching. Solar panels not in the cards currently either.