ᐅ Sound barrier wall for neighbor’s heat pump

Created on: 23 Apr 2017 20:31
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AndreasPlü
Hello,

We are currently building and during our last site visit, we made our first negative observation: Our neighbor has an outdoor heat pump installation with the exhaust facing directly onto our property, partially affecting our terrace.

The distance between the heat pump outlet and our house wall is about 4 meters (13 feet). It is a Viessmann V 200. Now we have a constant humming noise that can also be heard on our balcony, which is about 6 meters (20 feet) away in a straight line.

Why would someone do this—poor planning or cheaper than an indoor installation?

Seriously, my question is: Are there any products that can help with this? I am thinking of a soundproof barrier, for example a 2-meter (6.5 feet) high wall running along the entire boundary (about 7 meters (23 feet)). What recommendations or experiences do you have?
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Evolith
24 Apr 2017 07:53
For our project, a minimum distance of 10 meters (33 feet) from the neighboring house is mandatory! It is not allowed to be any closer. You should also check the recommended minimum distance for the pump.
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tempic
24 Apr 2017 08:12
Nordlys schrieb:
Why would anyone do that? The price... the price.

A heat pump is by no means the cheapest heating system.

When deciding between indoor or outdoor installation, price is not the decisive factor.

However, the location of the outdoor unit is certainly poor and should be changed...
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Bieber0815
24 Apr 2017 08:39
Relocating the system is likely to involve a considerable amount of work. If the installation is already operational, the screed will already be in place (is he already living there?), not to mention that the entire plan would need to be revised (building halt?).

Tip 1: Wait until May; eventually, the weather will get warmer.
Tip 2: Have a friendly conversation with the neighbor to understand their intentions, whether this was considered during the planning phase, and if any alternatives were discussed.

Any potential soundproofing measures should then be planned carefully and collaboratively with expert knowledge.
11ant24 Apr 2017 13:17
Evolith schrieb:
In our case, there is a mandatory minimum distance of 10 m (33 feet) to the next house! You are not allowed to install anything closer than that. Check what the pump’s recommended minimum distance is.

Although I really like that idea, it basically means that only people with plots wider than 20 m (66 feet) can place it, and even then practically only in the middle of the garden side. If that’s the best clever trick to get rid of the ridiculous trend of placing noisy boxes in front yards, then I’m all for it.
Bieber0815 schrieb:
Try politely talking to your neighbor to see what they had in mind, whether it was considered during the planning phase, and if any alternatives were discussed.

Typical noise protection regulations unfortunately focus more on sound pressure levels than on the kind of moderate “loudness” that can drive someone with tinnitus crazy.

And I’m afraid most builders don’t think about this at all. They just accept being told that their energy concept, tied to their subsidies, requires it that way.

The fact that this is basically no different than putting a refrigerator outside your house—only not as bulky waste but permanently and switched on—would surely stop anyone with common sense.
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kaho67424 Apr 2017 14:45
I would politely ask if it’s possible to build the structure into the wall. There are also attractive walls you can use...
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Nordlys
24 Apr 2017 15:01
You can’t just seal that in with bricks. It’s a type of compressor. It pulls in air. It needs to have good ventilation, I would assume.