I promised my nephew that I would find out if there is a reasonable way to install a bathroom/shower vent in his first floor bathroom. This is an older house, two story. That bathroom is on an outside wall, but I am not sure if it is a smart idea to install a horizontal vent in the wall to the outside (north side of the house).
What is the routine method of installing a first floor bathroom vent? Just let it exhaust into the ceiling space above the bathroom?
I would appreciate any guidance that you can spare,