Controlled residential ventilation - You can hear every word in the other room - Is this normal?

Oh yes, despite the newly installed silencers, you can still hear conversations from the main room in the guest bathroom. Although slightly quieter, you probably shouldn’t gossip at my place anymore when someone is on the toilet... That’s sooo stupid!!! The installer wanted to convince me that this was normal and that there were never any complaints.

I can’t even tell you if we have silencers. We probably don’t hear anything except the suction noise in the rooms. How about setting up Wi-Fi speakers like Sonos or Bose in the guest toilet that play muted chill music? That way you can at least manage the eavesdropping.

No, this is not the right way.

More telephone sound dampers need to be installed, or rather different ones like these here:



Or as a last solution, telephone sound dampers must be placed between the rooms; these are usually flat and look like this:



BTW, we also have the piping with spiral seam pipes (but parallel), and you can't hear anything there.

It is not due to the [Wickelfalzrohr] but rather the type of connection. In the industry, silencers are an absolute standard and are basically installed, for example, after every fan and between every room connection.

I also did not say that it is caused by the [Wickelfalzrohr], but quite the opposite.

With Dodo it looks like a series connection, we have a parallel connection. Both are [Wickelfalzrohr]. You can't hear anything here.

Therefore...well, you can imagine the rest.

Was already understood that way, just wanted to confirm it again

Is there any news to report on this topic? I am quite curious to know if you were able to solve the problem completely.