Controlled residential ventilation - Planning the positions for supply air / exhaust air

No, that depends, among other things, on the general contractor/controlled residential ventilation. Something like that is planned from the beginning and not "somewhere," where the builder thinks they are right, botched together.

I see it exactly the same way.

Ultimately, I think (with a layperson's understanding in this area) that an outlet on the wall is definitely better than on the floor? Whether regarding dust swirling, furniture placement, and simply because of the aesthetics. I believe this is independent of the house (at least with "standard" planned houses) and certainly independent of the controlled residential ventilation. After all, that has nothing to do with a model? I simply suspect that it is cheaper for the general contractor to install everything on the floor, since then he doesn't have to install anything in the wall.

The installation in the floor has sometimes great advantages regarding space requirements for the ducts. For example, everything can be accommodated in a relatively narrow plane and supply two floors with exhaust and supply air.

How do you want to properly remove three supply airs in the sleeping area over one exhaust air on the floor?

Oh, that works. It's called overflow area and displacement.

Installing in the floor has considerable advantages regarding space requirements for the ducts. For example, everything can be accommodated in a relatively narrow plane and supply two floors with exhaust and fresh air from there.

Oh, that works. It's called overflow area and displacement.

Exactly - so the only advantages lie in the reduced effort for the general contractor or ultimately the trade that installs the ducts?

No, the air distribution is different as well. Depending on the design, there are also noise advantages. Large air distributors may also not be necessary, which then saves space.

Furthermore, this also helps to avoid excessively long duct lengths, which has a positive effect on flows and pressures and ultimately on the overall price.

Fewer wall valves also means less work for the drywall installer, etc.

So it is a complex issue.

Installing it in the floor has considerable advantages regarding space requirements for the ducts. For example, everything can be accommodated in a relatively narrow plane and supply two floors with exhaust and supply air from there.


Oh, that works. It’s called overflow area and displacement.

In the bedroom, he probably has 40-45m³, in the two children's rooms about 20-25m² each; in my opinion, an exhaust of presumably a maximum of around 40-50m³ is too little. Per floor, it should roughly balance out.

No, it doesn’t have to. Since the staircase is not hermetically sealed.

In addition, we are also missing the size specifications for the valves.