I wanted to see what my wood consumption was the first 24 hrs with the new oslo. I have a wood box in my garage that i would empty in one day with my old wood furnace. it would equal out to a good face cord or 1/3 of a full cord in one week, sometimes more if it was real cold. we were down to 17 last night and its 24 now so its a good comparable day. Ive burnt a third of that box in 24 hrs, HOORAY. House has also been evenly warmer too