Volume heat pump experiences?

Hello,
we have now received the first offer for a ground source heat pump. It is a heat pump from Waterkotte, model AI1QE.
Now I have read that the heat pump has a sound power level of 48 dB(A), which seems quite high to me. Since we do not have a basement, the heat pump will be installed in the house connection room on the ground floor. I want to avoid hearing the heat pump especially in the living room as well as at night in the bedrooms.

What experiences have you had with your heat pumps, especially if they are located on the ground floor? I am also happy to consider alternatives to the heat pump offered to us.

Regards

Nordanney

Hello,

Assessment values Lr in dB(A) at night (9:00 p.m. to 7:00 a.m.)

Residential areas (SL II) 45
Mixed-use areas (SL III) 50

Evaluation level Lr,H in dB(A)
Night (10:00 p.m. to 6:00 a.m.)
Minimum requirement 30
Increased requirement 25

best regards

Husmann Sachverständigenbüro

Over the winter we were able to gain a little experience with it. As we said, the unit is located right next to the living room and we only hear it if we really listen carefully when everything is quiet in the house and the pump is running at full speed. Otherwise, we hear relatively little to nothing of it and are very satisfied with it.

Thank you, that doesn't sound as bad "in real life" as I feared.

That is exactly the reason why I am not so enthusiastic about heat pumps.

(Well, 48dB(A) is twice as loud as an expensive, quiet refrigerator, but the device is not in the kitchen or living room, but in the adjoining room. Therefore, I don’t think that’s a problem. Gas or other heating systems also emit sounds – for example, in almost every heating system (except for the outdated direct floor electric heaters), some electric motor is working to move water/air.)