Yeah I am a bit lost in regards to the return air vent and agree having a return vent from each room makes sense but to do that you would have to zone the return vents so they could open and close along with the out let.
I Was expecting that I would have bedroom doors closed and also close doors to passage way from the entrance, kitchen and scullery how ever looks like they will install the return air vent in the passage way. Am not sure of the logic to that
