I'm going from the basement, to an outside chimney at the end of my house. The flue pipe exits the basement about five feet off of the floor (say approx. one foot below ground level) and the chimney is about three feet above the peak of my one floor ranch style house. Allowing seven feet for the first floor and four feet for the attic, I would guess that the total height for the flue in the chimney is about 15 - 16 feet.
It seems that I currently have plenty of draft for the fire itself even though the chimney really isn't that tall. I just think that the automatic draft is decreasing the temperature of the exhaust gases to the point that the creosote is depositing on the inside of the flue.
As I stated in my previous post, I think I'll close off the automatic draft with some heavy aluminum foil and see what happens.
Thanks for your response.
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