What's the minimum flue size for a wood-burning stove?

Question

if you have an answer in inches, that would be really helpful

Answer 1

I have a woodburning stove, 6" flue. But any particular stove is going to be designed to have a flue size that gives the best performance for that stove. The collar on the stove to accept the flue is going to govern/indicate the flue size that should be used. I've seen them at least down to 4", and up to 8". Manufacturers recommended flue size is what matters.
If you should be asking about the CHIMNEY flue then I would think any conventional chimney (around 13" square) would be suitable although sometimes a liner is needed if the flue is old and liable to leak fumes/smoke through aged mortar joints.

Answer 2

I wouldn't get smaller that 8 inches, if it was my stove.

The opening in the chimney through which smoke passes is called the flue. To provide adequate room for smoke passage and draft development, flues must be carefully sized in relation to stove capacity and chimney height. In general, flue size should be 25 percent larger than the size of the stove pipe, which connects the stove to the chimney. This means a stove with a 6-inch diameter pipe would require at least an 8-inch flue; an 8-inch stove pipe requires a 10-inch flue, etc.

Smoke moves up the flue in a swirling pattern. Round flues are more efficient than square or rectangular ones because they offer little obstruction to the natural flow of smoke. For best performance, the inner surface of flues should be as smooth as possible.

Answer 3

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Answer 4

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Answer 5

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RE:
What's the minimum flue size for a wood-burning stove?
if you have an answer in inches, that would be really helpful

Answer 6

The flue needs to be sized to give the correct amount of draught to allow the fire to operate at maximum efficiency. The spigot on the exit of the woodburner will give some indication of the manufacturers intended sizing but you would need to refer to their literature before installing. if its a long run you may have to go up a size. You may go smaller if the flue gases are fan assisted I but have never installed one of these

Answer 7

it all depends in the wood burning stove-- different sizes means different flue sizes and they design for that certain size-- if want more burning power go slightly bigger not smaller--

Answer 8

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Answer 9

6 inches is fairly standard,some small stoves have 4 inch.it does depend on the fire box size.

Answer 10

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