Interesting: So 9 ton would be the equivalent to my 1000 gallons. With that, Pellets are about 2100 vs. 3500 of Oil (assuming 3.50/g) That pays for my stove in year 1. In all honesty, every situation is different. For example, i installed new Low-e windows throughout my first floor, i insulated 2 rooms, and i suspended the ceiling. And I most certainly will be eliminating drafts before the winter. The one good thing that came out of the sudden spike in crude is now i have an alternative fuel, along with a much more energy efficient home. Now all i need to work on is to combat the 43% rise in Electricity costs come this November.