Installation of controlled residential ventilation - in the ceiling or outside?

Hello, thanks for all the responses so far. If I understood correctly, all of you who answered this question have installed the pipes *in* the suspended ceiling, right? Was the alternative that provider B suggests to us also offered to you, and if so, what was the deciding factor that made you choose option A? Or was this question never raised?

The appearance of the pipes in the utility room in RFR's picture doesn't bother me; and the position of the openings is also relatively unimportant to me, but I would be interested to know if there are functional differences. At the moment, I think that if provider B is right and their solution works better *and* is also cheaper, then I would prefer it because the two small boxed-in sections would not bother me. But if beyond the appearance there are valid reasons against such an installation, I would like to know and understand them!

Thanks & regards,

Kazazi

Hello,

attached are first of all the photos of how it looks at our place.





No, we were not offered any other installation.

Thanks for the photos. I have actually never seen that before. But I also hardly know any houses with controlled residential ventilation; the houses I know are somewhat older, and in our new development area, many have actually foregone it.
We have white "plates" in the ceiling on the ground floor and plates in the upper part of the walls on the upper floor.


No alternatives were offered to us either. I think every builder has their own technique they trust and install.

So, with us the pipes run ON the precast concrete slab, not inside it. Around and above it is insulation and on top of that the underfloor heating and the screed. We also always have the exhaust air at the top (in the kitchen in the ceiling, in the bathrooms high up in the wall/drywall) and the supply air in front of the windows in the floor. I have not heard of pipes INSIDE the precast concrete slab, but that does not mean that such a thing does not exist.

In our new development area, almost all controlled residential ventilation systems are installed in the ceiling (regardless of whether it is a precast ceiling or normally poured). All inlets and outlets are located in the ceiling – for example, in our attic as well, behind the drywall panels. The reason for installing them in the ceiling is that it is the easiest installation method and no boxing-in or similar is necessary anywhere.

The cables were also laid in the ceiling in our case.