Please evaluate the heating/ventilation concept for the new single-family house construction

I know that the devices are subject to a standard – it's the same with car noises, and yet there are vehicles that are louder than any tuned exhaust straight from the factory ;)

And those standard measurements on the devices are conducted under laboratory conditions at very specific distances.

If you don't adhere to exact guidelines during installation and the system is poorly adjusted, then you often have noise problems.

Of course, it's often subjective too – noise is more frequent ;).

No one here owns such a device, or one does, but he has the device stored in the attic of his garage. So I am not affected...

I don't want to demonize the devices either, but to say that since the windows are closed in winter and thus it doesn't / hardly bothers anyone already says a lot ;)

There are plenty of reports online and lawsuits in court because of these devices. But of course, a typical German problem – you can always bring that up.

It's always funny how, as a moderator, you still can't resist personal jabs. But that's how we know you by now :)

Now I have to add my two cents again. If I said that you can't hear the systems with the window closed, that should not mean that you are exposed to noise pollution with the window open. In our very quiet residential area, you can't hear the outdoor unit during the day even with the window open in winter. Only at night, when it is almost completely silent, you open a window and stand at the window (on the side where the device is located), then you can hear it humming quietly. Since it is about 15 meters from our house to each neighbor's house, there is no need to worry about the neighbors. BTW, with controlled residential ventilation, the windows are usually closed anyway, so no one is disturbed.

Much about sensations is subjective. Also with noise and other things.

My neighbor opposite has an air ventilation unit for the air-water heat pump standing in the garden. At first, he wanted to set it up directly at the property boundary (--> 35 m to the house) by my separated second terrace.

But then he developed the awareness that this (line length, costs) would be ineffective and expensive. Now the device stands 6 m next to his house.

One can have mixed opinions about the success and the beauty of the optics here – in my insignificant perception, it just looks like a poorly designed refrigerator on two concrete stilts in the garden with a hose attached. You can easily hear the device when you stand outside, it doesn’t bother, and I would have accepted it if it stood at the edge. Many commercial airplanes, which here in the last curve begin their final approach to Düsseldorf (sometimes impressive in appearance, especially an A380) are certainly noisier (the rescue helicopter too, it always flies over my house at night to refuel....).

The neighbor, however, is already annoyed by the so far non-existent solar cells for the photovoltaic system on my roof, as he told me rather brusquely recently: "Then I’ll always have to look at your totally stupid-looking roof in the future with this completely pointless system on it." I had a charming response on the tip of my tongue, which I swallowed just in time.....

Things bother me too: For example, the decentralized pellet system of the 12 row houses next door. When this steam engine sticks the glow igniter into the first pellets to start up, this thing smokes the entire area (including my terrace) for 3-5 minutes (+ stench) so badly that you’d think a house next door is burning down. Well – such systems (the system is technically okay) just do that, what can I do? Be annoyed? Nope.... life is too short for that. My wife and I rather laugh ourselves silly and joke about when the “steam engine” will “explode” when starting. :eek:

Best regards
Thorsten