Ventilation system in single-family house without effect = planning error?

Great! Always position it so that it is not directly on the valve and in the center of the room. A windowsill or furniture is suitable.

I was thinking of places like, bedroom: middle of the bed, children's room: bed, office: desk, etc...

Supply air, exhaust air, and chimneys in a line – is that a common and especially sensible arrangement?
Even if there is currently no wood stove connected, the chimney is planned for it, right?

During the planning phase with the architect, we addressed that: chimney, ventilation system, and extractor hood must not run parallel, and there must be a shut-off device.

I plan to remove the chimneys of the ventilation system anyway, to make space for photovoltaic modules. The intake and outlet should then move to the north wall of the house so that they are also out of the sun.

We were also at the kitchen consultation over the weekend and were more or less advised against the combination of exhaust air and ventilation system.

Is this combination actually not necessarily sensible?

Do I really have a great advantage with exhaust air? I don't think kitchen odors disappear anyway, regardless of exhaust or recirculation.

So on the subject of odor from the extractor hood, I can only say: my girlfriend is half Portuguese and loves fish dishes, and I hate fish (smell). Thanks to our Berbel extractor hood, it doesn’t bother me at all in our apartment anymore when she cooks fish dishes, unlike before...

The combination should probably at least be designed so that the ventilation system is off when the extractor hood is in use or a window is supposed to be open.
We haven’t activated that so far, but it doesn’t bother us much...

I would only use exhaust air ... Get rid of the smelly air and that's it ...

I would only use exhaust air ... Get rid of the smelly air and that's that ...

You probably can't completely prevent odors, but we are very satisfied with the performance of our "Berbel." Since we have a pretty open kitchen (separated from the living/dining area by a double sliding door), that was one of our main criteria when choosing: performance, performance, performance ;-) But back to the actual topic: Yesterday our construction manager came by, who also writes expert reports as a construction surveyor. He himself is not very familiar with the technology of the systems, but knows the basic principle: He also assumes that the supply and exhaust vents on the upper floor are poorly positioned. In the coming days, he will come back with a friendly installer he trusts for designing such systems. (Luckily, everything is initially cost-neutral.) Regarding the dust deposits next to the supply valves, he assumes that we create turbulences due to the consistently higher airflow, which bind the dust through magnetic attraction and then settle there. He sees the filters used in the ventilation unit as critical because they are not certified. He also assumes that the airflows of the system are not properly dimensioned because the airflow is adjusted solely by the disc valve. He mentioned so-called throttle valves to regulate the airflows. It has been noticed that rooms with a short supply path from the supply distributor are significantly more affected by dust than those farther away. I am curious what the next two visits will reveal (once the Wolf customer service and once the installer). The CO2 measuring device is supposed to arrive today. I will then log some data with it and gladly post it here.

Sounds basically not wrong. The filter in the device is not certified, so what? Filter = resistance, the fan doesn't care whether the part is certified or not. Something different: The filters, whether in the device or at the exhaust vents – do you already replace them regularly?