ᐅ Neighbor thinks the air-to-water heat pump is too noisy

Hello and Happy New Year to you all.

Here is the situation: our neighbor just came by to complain that our heat pump is too loud and runs continuously. The outdoor unit of the heat pump is located behind our house. On the property line, the neighbor’s garage is behind the heat pump, and our garage is next to the heat pump, forming a sort of narrow passage or corridor. The neighbor’s house is diagonally across from this setup.

He said he constantly hears a humming noise. What do you think could be done to reduce the noise somewhat?

If you have maintained the building setback (usually 3m (10 feet)) from the property boundary and the noise level at the neighbor's property does not exceed 35 dB, you should be on the safe side.

Do you mean that the heat pump is located in a corner? That’s not ideal...

Otherwise, a soundproofing cover could be considered, which can provide a reduction of several decibels.

Yes, exactly, it is located in the corner. It has a distance of about 50cm (20 inches) to the garages on the left and rear sides, and approximately 2.5 meters (8 feet) to our house.

Acoustically very unfavorable. Together with the sharp angle, it already acts like a sound funnel. Would another location be possible?
Is this a new build, and what does the planner/heating engineer say about it? This should possibly be subject to criticism.

Yes, it is a new build, constructed in 2017. I will contact the heating engineer.

Malz1902 schrieb:

Yes, it is a new build / was built in 2017.

And only after several years does the neighbor notice that the heat pump is too loud? What kind of unit do you have?