Which house concept? Fundamental questions of house construction

The airtightness must be proven, the limit value is the same for all new buildings. So, they are all airtight boxes, including the healthy living ones.

The stuff in the filters of a controlled residential ventilation system comes from the indoor air. Without controlled residential ventilation, the stuff is still there anyway.

It's all just a matter of mindset. Not to say, probably imagination.

Currently it was about "Wohngesund".

Wohngesund with cheap equipment. That was what I was talking about in my answer (quote)

Healthy living with cheap equipment. That’s what my answer was about (quote)

I know. I just picked out the template ops:
"Healthy living" is a scam. But as so often in life, everyone has to decide for themselves and if someone wants to burn money, they’ll find plenty of opportunities.
The general contractor with the healthy living wall just airs out vigorously once more before the victim ... eh ... customer arrives.

If I understood correctly, living healthily is not rocket science if the craftsman knows which product to use. It is also not the case that the house is then plastic-free and incredibly eco-friendly. Only certain substances must not be contained.

Ökotest recently tested a children's room from Sweden. It came to a positive surprise and shows that avoiding certain substances does not have to be expensive. However, it is also not eco-friendly.

It is simply difficult to find the right thing among all the half-truths and marketing babble.

Diffusion-open
Ecological
Living healthy
No matter where, everyone has the best, the ultimate solution
All are also innovative
And everyone also has the efficient heating concept.

Unfortunately, nothing is comparable. Subtle fears are stirred, a great ecological feeling is given, suggesting getting the most valuable house.

The airtightness must be proven, the limit value is the same for all new buildings.

This is factually incorrect – we live in a counterexample.

The stuff in the filters of a controlled residential ventilation system comes from the indoor air. Without controlled residential ventilation, the stuff is still there.

It's all just a matter of mindset.
Not to say, probably imagination.

The stuff in the filters is collected there and has wonderful time to ferment, mold, and react, which does not happen in the indoor air. Do you also drink moldy milk? The stuff was already there before. Great logic.

When cleaning and replacing the filters, the tube should remain clean. Even in the kitchen, there is no contamination or grease film visible on the exhaust air. However, you can throw away the filter, vacuuming is not applicable there.

It will be seen how everything behaves in the long run.