Central or decentralized ventilation system - Who has experience?

Thanks for the info about Fa. Zehnder

I didn't know it until now.

Sorry,

silentest decentral system

I had overlooked that.

But then the answer is:

There is no silent decentralized system!

With a decentralized system, you make holes in your walls and thus have holes in your sound insulation. It won’t be as bad as a tilted window, but not much better either.
Whether the system itself makes noise there is then irrelevant.

Best regards,

Andreas

With a decentralized system, you make holes in your walls and thus have holes in your soundproofing. It won't be as bad as a tilted window, but not much better either.

That was also our experience with it. Since that annoyed us along with the noticeable fan noises, a decentralized system was no longer an option.

I also keep seeing these decentralized solutions in our new development areas. For retrofitting individual rooms, I find decentralized great. But only for retrofitting. With new buildings, you then see 10* of these holes in the wall with the housing. That only brings disadvantages. What happens on a weather-facing side during a strong storm? (Is that sealed for 25 years of service life?) Do I change 2* 10 filters a year? (20* filters?).... What does it look like if I have ten of these boxes in each room? Estimated power consumption 10 * 15 watts = 150 watts? If you live rurally, and the farmer spreads animal manure on the fields, then do I have to switch off the central systems 10*? Our standard centralized controlled residential ventilation requires 32 watts in normal ventilation mode. For most systems, there are air quality sensors that switch off in rural air. Or one* central switch. Filter replacement takes place in one location. If "decentralized" is sold for new builds as a homebuilder, it usually only builds standard energy saving ordinance 0815, because the expertise for more is missing.

Has anyone installed a decentralized system here and can report whether the decision was right or wrong?

How much is the price difference approximately in total?

He is asking about the quietest decentral system. I am not familiar with that and would not want it in a new building.

If the provider insists on decentralized with the described arguments, I would look for another home builder.

If you are not familiar with it, fine.

The question is not whether you want it, but which ones are the quietest in operation in terms of noise level in dB.

There are also plenty of reasons against a central ventilation system, which are mostly not mentioned by the companies.