Building a single-family house in NRW

I think I confused supply air with exhaust air We get filters where the used air is "sucked away". Where fresh air comes into the room.. there are no filters That's correct, right?

No, why? - For your breathing air it is more important that it comes to you clean to. For your kitchen exhaust air, the filter is there so that the exhaust air doesn't grease up the pipes as if they were baking trays.

The supply air filter is, however, in the device and not where the supply air flows into the room..

The supply air filter is in the device, not where the supply air flows into the room..

The filter makes the most sense where the pressure of the airflow experiences an intentional change. At the outlet opening, it would create a blocking effect.

In a device that processes recirculated air, it therefore makes the most sense at the end of the intake tract.

But you spoke of supply air and exhaust air. "Supply air" actually means only air drawn into the system from outside, "exhaust air" is the one released outside. In a recirculating system, mostly recirculated air is used. So you meant the intake tract with "supply air" (?)

In this sense,

I think I confused supply air with exhaust air We get filters where the used air is "sucked off". Where fresh air comes into the room..there are no filters That is correct, right?

is of course correct:

in a recirculating system, the filter belongs in the intake tract (and thus into the intake tract), at the outlet opening it would be poorly placed.

What you confused was therefore "supply air" with "intake" and "exhaust air" with "exhaust" — not "supply air" with "exhaust air".

But you were talking about supply air and exhaust air. "Supply air" actually only means air that is brought into the system from outside, "exhaust air" is the one that is released to the outside.
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Good morning

No, that is called fresh air and extract air in a controlled residential ventilation system.

Olli

Controlled residential ventilation saves 30-50 minutes a day.

How exactly should one imagine that? Do you monitor opened windows in Saxony? Here, we open a window and go on, i.e. we don't stay next to it for 30-50 minutes.

I do appreciate that in a controlled residential ventilation house it is significantly cleaner than outside in the outdoor air. The fine dust/diesel/direct injection problem will accompany us for at least another two decades

I can't imagine such a life. Never opening the large patio door, not sleeping with open windows in spring/summer. Instead of a normal front door that can be left open in summer, then a door sluice with dust protection door... somehow sounds like a lab at the Robert Koch Institute? By the way, where is your property located? Near the highway?

And the burdens with VOC, formaldehyde etc. are invisible but present.

I don't understand that now. If your furniture emits formaldehyde indoors, how does controlled residential ventilation help you?

How exactly should one imagine that? Do you guard opened windows in Saxony? With us, we open a window and move on, i.e. we don’t stand next to it for 30-50 minutes.

1. Open 22 windows on two levels, wait 3-5 minutes; close 22 windows
2. Open 22 windows on two levels, wait 3-5 minutes; close 22 windows
3. Open 22 windows on two levels, wait 3-5 minutes; close 22 windows
4. Open 22 windows on two levels, wait 3-5 minutes; close 22 windows
5. Open 22 windows on two levels, wait 3-5 minutes; close 22 windows

I cannot imagine a life like that. Never opening the large patio door, not sleeping with open windows in spring/summer. Instead of a normal front door that can sometimes be left open in summer, there’s then an airlock door with a dust protection door

So you haven’t informed yourself about controlled residential ventilation systems until now. Interesting. Of course, you may open or close windows or patio doors at any time, yes, you may even install and use an exhaust hood together with the controlled residential ventilation system. You can do everything with the controlled residential ventilation system, but you no longer have to.

However, you have to ventilate one way or another, and much more often than just opening and closing the front door occasionally. As mentioned, 3-5 times daily for 10 minutes or continuously with the controlled residential ventilation system. While air with pollen, fine dust, and all sorts of nasty stuff comes in through the windows, the air is filtered by the controlled residential ventilation system. Of course, the outside air is not as dangerously unhealthy as in, for example, Beijing, but exposure to fine dust/fine particulate matter or pollen is indeed widespread throughout Germany. Naturally more in urban areas than in a 100-person settlement without commercial businesses, traffic, etc. within a 10 km radius.

I don’t understand that now.

I know. Please inform yourself. Then it will become understandable.