Had this stove about 6 years..Its the worst, doesnt put out much heat. House is unfinished so no floor insulation right now..You can be 6 feet from the stove and be cold. I do have ceiling fan. Burn mostly oak. A lot of the time I have to have side door of stove cracked a lil so it burns hotter. Done plenty of flue cleaning. I had a Jotul 400 in Alaska that would burn you out of the upstairs. Only difference now is the ceiling above current stove is pitched, but the fan is right there to bring air back down...Only burned spruce and birch in Alaska. The Oslo is quite a step up from the 400 I had before..Its like burning wood for nothing with the Oslo now..