When I write climate, I do not exclusively mean the indoor climate, but also the general feeling in the rooms.
It is quite different when you are in a bunker or in a "normal" room, even if the indoor climate is brought to the same level by certain techniques.
I don't like this complete isolation. I like it airy and open. In winter then cozy warm by the fireplace.
And if someone can assure me that I can also get this cozy/snug feeling in a new Energieeinsparverordnung house, that would be great. However, I do not want to spend money on any technical gimmicks if I can create this "climate" natively as well.