I guess I should of add more information to my previous post. House and garage are both new construction and very well insulated. I"m in southwest PA and do currently heat with wood using a woodburner. The garage is unheated at this time. Both the house and garage have radiant heat in the floors(neither is hooked up yet). What I was looking at was how much wood you guys use approximately to heat the same square footage(8000 sq. ft.) I use about 7 cord now. I have a chance to pick up a Heat Source 1 model 2000 for a steal. The furnace is brand new sitting in a wharehouse. Although heat source in now out of business if I can get it for the right price it should be worth it. Let me know what you guys think.