New construction Poroton T7 MW 36.5 without controlled residential ventilation

: as you already say, everyone can do as they please. I tried it with controlled residential ventilation: advantage, regular air exchange, pollen filter, no potential cold spots where warm air meets cold surfaces. Or do you mean in winter when the cold air draws through the 'missing' seals and the windows don’t get cold at that spot?? besides, if I do something, it should meet the current standard and consume as little energy as possible. and what disadvantages does controlled residential ventilation have other than it costs 3-4 thousand euros??

Have received some offers so far, am more in the range of 10-12k

: what disadvantages does the controlled residential ventilation have besides it costing 3-4k??

-The peanuts for the controlled residential ventilation are relatively irrelevant to me, today a cold roof already costs a 3-4k surcharge because it no longer corresponds to the spirit of the times
-I also don’t care much about energy consumption since I have my own forest (of course this cannot be applied to the general public)
-I work professionally with building technology and ventilation systems, I know what these devices and the ducts look like inside after 10 years (commercial properties), I don’t want to have something like that at home on principle (also not generally transferable)
-In any case, the systems must be maintained, so I have to take care of maintenance, which means stress and dirt
-From my point of view, the systems are not hygienic enough. Although I am allergic to hay fever, I prefer the pollen from outside air to the bacteria and fungal spores from the controlled residential ventilation.
-The systems are not silent; nowadays a lot of importance is placed on sound insulation, which is also very, very important to me personally, and yet people still get a ventilation system in their house. In our neighborhood no one has a controlled residential ventilation system, as far as I can tell so far. (If my neighbor had one, I would immediately commission an acoustic office for an appropriate sound power measurement and in case of exceeding the permissible level according to TA-Lärm, obtain an injunction)
-The system including pipes takes up space
-The appearance suffers inside and outside (also my own perception)

But how should ventilation or air exchange be ensured in a modern, highly insulated house?

We both work full time and in the morning we neither have the desire nor the time to ventilate, and in the evening actually only the living room and bedroom. Children's rooms are currently aired once a week.

Good evening,

I should know better from long experience, but I’ll try anyway...

-From my point of view, the systems are not hygienic enough.

You know all the providers – outside of commercial business?

Although I have hay fever allergy, I prefer the pollen from outside air over the bacteria and fungal spores from the controlled residential ventilation.

You have bacteria (about 2 kg per person) inside your body; if not, you would have been dead long ago.

(If my neighbor had one, I would immediately commission an acoustic office with the appropriate sound power measurement and, in case of exceeding the permissible level according to TA Lärm, obtain an injunction)

You perfectly fulfill the cliché in my head; a shame.

-The system including pipes needs space

The space you lack?

-The appearance suffers inside and outside (also my own feeling)

Nope.

Rhenish regards

I am planning a controlled residential ventilation system because I am tired of freezing in winter when I am standing in the bathroom after a shower but have to keep the window open for ventilation. Because I no longer want to lie in stale air while sleeping, [der Muff weg ist]. Whether the controlled residential ventilation system is really necessary because the place would otherwise rot ... no idea. The manufacturers say so.