ᐅ Oven fresh air supply through the basement ceiling

Hello everyone,

We are currently planning the fresh air supply for our wood stove.
We would like to route it through the basement and then directly into the ground floor underneath the stove.

We are interested to know if others have taken this approach, or if it is more common to connect the fresh air supply directly through the chimney or an opening in the exterior wall of the living area.

Does anyone know if the fresh air duct needs to be insulated when passing through the ground floor ceiling? In other words, should we plan for an opening the same size as the 100mm (4 inch) duct or slightly larger?

Many thanks and best regards

It is mainly about insulation, condensation, and thermal bridging.

We have a double-shell chimney. It works great. The fresh air supply is preheated, the connection pipe at the bottom to the stove doesn’t get cold, no thermal bridge, no core drilling, no hassle.

Our stove air supply runs through the basement. An insulated pipe (DN100 or 150, I would need to check) goes vertically through the floor at the stove into the heating basement. From there, it runs just below the ceiling to the basement wall, then diagonally up into the external wall.

Regards,
Harald