At what chimney height should one consider a damper?

[MagdalenaP]

As the title ask. Thank you in advance.

 

[Woody Stover]

If the draft is pulling so hard that you can't control the burn, that would be the point at which to consider a flue damper I'd say.

 

[kennyp2339]

I have a 18ft stack, but the house sits on top of a hill with no tree's for cover, I tested by draft with a meter and found it to be excessive, so i installed a key damper in my double wall pipe, I generally close the damper only when temps are in the 20's or below, or if its windy outside.

 

[brenndatomu]

If internal pipe temps are excessive when the stove is turned all the way down...probably excessive draft.

 

[ABMax24]

I think you will get many different answers. It really depends on your stove and if you can control the burn rate with your stove damper alone.

I have 32ft of exterior chimney with 4ft of interior for a total of 36ft. The air control on my stove still controls the burn rate well, I can almost put out the fire if I turn in right down.

If your stove appears to "run away" or burn too fast with the damper all the way down it's probably time to consider one.