Suppliers / brands for central ventilation systems? Selection criteria?

Hello everyone,

I am currently planning my detached single-family house with a solid prefabricated house manufacturer. Which providers/brands are there for centralized ventilation systems? According to which criteria should I choose one?

Do you have free choice with the prefabricated house provider? They probably have their own favorites.

Yes, he certainly has a provider. I have not inquired about the central ventilation system yet. Maybe another model can be negotiated if the unit is too cheap or of inferior quality and noisy. Then you would be annoyed by ventilation noise for 15-20 years...

In principle, most don't differ much.

But there are: Hellios, Vallox, Wolf, Brink, Renovent, Pluggit, Vaillant, Zehnder, Systemair etc.

Your question is similar to that of Do you actually ever read in the forum section where you write, or do you just blindly ask questions? This question is similar to "which car is the best?"

Your question is similar to that of @Dany250

Maybe it's because we are relatively new to the forum and haven't posted in the four-digit range yet?

Hellios, Vallox, Wolf, Brink, Renovent, Pluggit, Vaillant, Zehnder, Systemair

Does that mean they are also of similar quality/price range? Who tests such systems with regard to their quality? There is no Stiftung Warentest or anything like that...