New construction Poroton T7 MW 36.5 without controlled residential ventilation

Gladly I will be proved wrong - which construction method ensures fresh air without disproportionate ventilation?

There isn't any. Fresh air requires exactly that: fresh air. Theoretically, ventilate about 12 times a day, but that is practically impossible.

Let's keep things in perspective. Everyone knows the system has its downsides (volume, mold in the pipes, costs, etc.). But it certainly has advantages too. However, if I live in the countryside and love the clean air, I basically have a window open somewhere for 3/4 of the year. Yes, that's based on experience, that's really how it is here. Plus, airing out briefly – I like to lie in a bedroom in the evening where there is fresh air. Even better to sleep with an open window. Of course, if I live on a busy road and the noise doesn't allow opening the window, then that's not possible. For the wintertime, I would generally allow a decentralized solution in some central rooms. Is it wrong to live like that in the countryside?

I do not have allergies.

By the way: at friends' houses, when guests are over, such a ventilation system is not bad. The air supply is guaranteed. That gives it points! But even here I say: during barbecue evenings the patio door is always open anyway...

Let's keep things reasonable. Everyone knows that the system also has disadvantages (noise, mold in the pipes, costs, etc.).

Costs: yes. You just have to offset that against roughly 1 hour of ventilation work per day. Noise = poorly planned or incorrectly installed. Mold = no. Where should it come from? Mold needs high humidity and biomass. Both are basically missing in the pipes. About the open window: depending on the outside temperature, the entire room then cools down. Most people generally find ice-cold walls rather unpleasant. Moreover, this greatly increases the risk of mold inside on the walls (cold walls = cold surface temperature = higher relative humidity => condensation => mold). This basically has nothing to do with rural or urban areas. In rural areas, there is no less mold or you need just as much fresh air.

Clear Grym. All buildings before the invention of controlled residential ventilation did not work, unless they were aired 12 times a day, but then they became moldy. I'm signing off here, this is getting too ridiculous for me.

Sure Grym. All buildings before the invention of controlled residential ventilation did not work, unless you aired out 12 times a day.

I suppose that for at least a good decade now the buildings have really been airtight. RAL installation of the windows. But even before that, in new constructions, you no longer had the leaky windows, defects, etc., that exist in old buildings with old, rickety windows. This airtightness is now mandatory and there is absolutely no difference between brick, aerated concrete, or KS+WDVS. The airtightness comes from the interior plaster (and as far as I know also the exterior plaster). Of course, everything worked somehow before. But construction technology changes. Today, cars are also built differently than 30 years ago. The Opel Kadett E was certainly a nice car, but I still prefer to drive an Astra K. Or a Golf 7 instead of a Golf 2. Controlled residential ventilation is nowadays a standard feature like ESP. Nowadays, triple glazing is also used instead of single glazing. And so on...

Well, if it simply "belongs" by now, then every promotion by the manufacturers seems to have worked - a downright knockdown argument!

On the topic of countryside/city/noise: If I live on a busy road, possibly even with a railway line, it’s noisy and I can’t just throw open the windows. No matter how well I may have built. If I live somewhere in the countryside, I can of course open the windows without having noise. Regardless of building materials. And then it’s also easier for me to provide fresh air.

And finally: The one-hour work effort is probably a joke from a calculation point of view. But I can understand that there are people who simply want to get rid of airing. But whoever needs an hour a day to open/close the window...sorry, I feel sorry for that person.