ᐅ Connecting Two Stoves to One Chimney – Installing Stove Pipes Inside the Room?

Hello everyone,
I hope my question fits here—otherwise, feel free to move it.

We are currently planning our renovation, which includes installing a chimney with a fireplace.

I have illustrated this very schematically... The blue line represents the ridge.
The chimney is to be located in the center of the room (according to the chimney sweep, this is better than an external chimney, especially due to the new regulations regarding chimney placement and the required height above the ridge).

We are now considering adding an additional “fireplace” in the kitchen, that is, a wood stove.
This, of course, also requires connection to the chimney...
I want to avoid having to install a second external chimney, which—again referring to the new regulations—would have to be extremely tall.

What options are there for routing a pipe inside the building to vent the wood stove into the chimney?
Right now, I only picture having to run a black stove pipe along the roof slope...
Or are there possibly other options? Maybe outside the building?

Thanks and best regards

Are you sure that you are allowed to connect two stoves to one chimney? I vaguely remember that our chimney inspector had some issues with this...

Flitz86 schrieb:

What options are there for routing a pipe inside the building to vent the exhaust of a wood stove into the chimney?
Right now, I only imagine installing a black stovepipe along the slope of the roof...
Or could there possibly be other options? Maybe outside the building?

It is possible to allow multiple connections on the property, but there are various regulations to follow. This also depends on whether a ventilation system is being installed or modified. To my knowledge, a flue system design must be carried out, and the pipe lengths and routes must be considered, among other factors.
The only valid answer to your question can come from the inspecting chimney sweep. Unfortunately, it cannot be answered here, as that would be irresponsible.

Hi, thank you very much for your feedback.
I will probably have to clarify this with the chimney sweep then. So far, they only know about the fireplace and a hearth...
I just wanted to get some ideas and suggestions here in advance ;-)

Two (or even up to three) stoves connected to one chimney are generally feasible, but this should be confirmed with the chimney specialist. If in doubt, the chimney might need to be slightly wider and have two flues. However, you cannot build supply pipes indefinitely long:

"As a general rule of thumb, the 1-to-4 rule can be applied. This means the length of the stovepipe should be one-quarter the length of the chimney. With a maximum installed pipe length of 3 meters (10 feet), the chimney should therefore be 12 meters (39 feet) tall." (Source: a website with a name starting with "O," which is also the name of the device used to load firewood.)

A pipe running across the kitchen and living room looks really unattractive and I would never do that. An exterior chimney can be relatively easily installed yourself as a kit, if necessary even twice. The advantage is the external combustion air supply. If you choose an internal chimney, then position it on the wall next to the kitchen.