I am building a very airtight home. Do I need to install an air vent?
All wood fires need oxygen to operate effectively. The Pyroclassic IV needs 3.6 cubic metres of air per kilogram of wood. Like all wood fires, if you starve the unit of air, which can easily happen with airtight homes, it will not operate correctly and puff smoke back into the room. For these reasons, we strongly recommend you put in an air vent, approximately the size of a brick.