Ventilation system - Noise level dependent on which factors?

That is done by the heating technician/plumber or someone who knows about it.

Now a really stupid question. Do I have contact with the heating technician before the house is built? I ask because the shafts for ventilation should surely already be considered when the walls are assembled in the builder’s hall, shouldn’t they?

You have to discuss that with the plumber. Why should you as a layperson influence it?

To make it quieter, for example, if that were possible through minor measures (additional costs).

For your current questions, there is certainly more information via the forum search "Controlled residential ventilation".

I have already been active there too, but unfortunately there isn’t much input on both systems, except that Zehnder is supposedly better (but I don’t know that either).

We have been running a Vitovent 300W continuously on level 3 for over 3 years. Thanks to the valves in the individual rooms, you don’t hear anything at all. Only the device itself can be heard in the technical room and very quietly in the garden, where the exhaust air connection is located.

That sounds great!! Thanks for the comment!

The system was planned for us by the manufacturer.

I assume you mean Viessmann, right?

I have also been active there, but unfortunately there is not much input from either system, except that Zehnder is probably better (but I don't know that either).

The devices themselves are also very simple. A motor, a fan wheel, a few bearings (often the problem), a heat exchanger. Therefore, there is little potential for optimization. Just google "bearing damage" on the topic, unfortunately you will probably find it with every provider, and if it happens to you, it really gets loud. Otherwise, it depends more on the planning than on the device.

I assume you mean Viessmann, right?

Yes, correct. F.Haus works very frequently with them because V. is located in the neighboring town of F. And no, we don't have a house from F. After initial discussions, we walked away from there.

Okay, thanks to you too!

Such a bearing damage sounds unpleasant, but I think it is easier to fix than a planning error of the system throughout the house.

So also interesting to know... Are Zehnder systems less sensitive in these matters?


We also don’t plan with F.Haus, as I said, only the ventilation was extremely noticeable here, I attached a picture of their technology from the mentioned show house. I believe this is the heating with integrated ventilation and not from V.

We are not planning with F.H., as I said, only the ventilation was extremely noticeable here, I attached a picture of their technology from the said show home. I believe that is the heating system with integrated ventilation and not from V.

That's right, that is not V. And the beverage crate shows me that you also did not visit the show home exhibition at the F.H. company headquarters, but were traveling in the south of the country. Here in central Hesse, F.H. and V. have a very good reputation. In their rather structurally weak region a bit further north, they are among the largest employers. And at least from V. I know that they are not only very active as sponsors in winter sports but also very socially engaged.