madrone said:What's the threshold? Indoor/outdoor temps?
For me, below 50 degrees outside is necessary. That's the minimum temp to light a fire or it gets too hot (even with a few windows open). I think that the end of October will be about right around here. I enjoy 80+ degrees inside in the Winter with a window cracked open. I think I would have to move to a colder climate to get the maximum enjoyment out of wood burning.