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Chimney & Fireplaces/Wood/coal stovepipe connection


I could not find any reference to this particular subject.
Our 9KW output wood/coal stove is connected to a steel lined, insulated and capped chimney. The stovepipe connection is horizontal at 18" from the floor.
I want to upgrade to a 16KW stove but the rear connection to the stove at center would be 23".
Can I safely make such a downward sloping connection?
Thanks in anticipation.

Hello Noel, NFPA 211 Code states all "smoke pipe must have 1/4" of rise per foot" so no you must go "up hill", if you did this you could cause a fire, void your home owners insurance or even death.
I would have a local Certified Chimney Sweep, (there you can look up by zip code to find one near you) take a first hand look at what you have, they should be able to help.
Hope this helps
Sorry, James

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James Ball


I am a chimney sweep with over 22 years of experience, CSIA certified and member of the NCSG, I can answer questions about smoky fire places, wood stoves, and heating units (boiler and furnace chimneys) do you need a relining? A cap? And much more


over 22 years

Chimney Safety Institute of America, National Chimney Sweep Guild

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