I have a cabin heated with an earth stove (smoke dragon). I plan to change it out to a modern stove. The Earth Tove has an 8" flue the new one looks like it will have a 6" flue. My plan is to use a 6" stove flue then transition ay the chimney adaptor to a 6x8" adaptor. The chimney flue is about 15' long and the stove flue would be about 5-6' long. Anybody know if this would create a problem? Neds
jeffneds, Welcome to the site. I had a garage stove that was a 6" into a 8" chimney. I got my reducer at Fleet Farm. Worked just fine.
With that kind of overall stack height (21') you should be fine. My shop stove has a 6" stove pipe that transitions into a 8" square masonry flue (bigger area than 8" pipe)...probably close to 20' overall...and has all kinds of draft.
In our old house we originally had an Earth Stove with an 8" going into doublewall class A. When I switched stoves I put a 6 inch to 8 inch adaptor on right at the stove. You can see a picture of this in my avatar. With 25 feet of chimney we never had issues with draft.
And just to let you know, I have an epa stove hooked up the same way.....from a 6" stove to an 8" chimney pipe (class A) and it also works just fine! The owners manual recommends that the pipe should remain 6" all the way. Talked to them about this over the phone years ago-no problem. Can't argue with success.
