ᐅ Noises in the house possibly caused by the neighbor’s heat pump
Created on: 16 Mar 2026 15:43
M
Michael202M
Michael20216 Mar 2026 15:43Hello everyone,
If this question is in the wrong forum, please move it.
I will try to briefly summarize the problem.
Since this heating season, the neighbors have had a heat pump. Since then, my wife has been unable to sleep.
She hears a high-pitched tone throughout the entire house, similar to the whistle of an industrial vacuum cleaner. The problem is partly that it happens regardless of whether the outdoor split unit is running or not, and I do not hear this sound. She hears it almost constantly. To her, it sounds as if it is coming from the walls.
What I have already done:
Replaced various electrical devices that actually produced noises inside the house, such as the range hood, roller shutter switch, and electricity meter in the basement. However, these noises were always a humming sound, not the whistling noise.
Additionally, our heating system makes strong flow noises at different radiators at different times. The heating is now always turned off at night. Sleeping pills are currently a necessity.
My wife is at the point where we seriously have to consider selling the house, which would be a disaster economically and personally for us.
The neighbor is very cooperative in finding a solution.
Do you have any ideas?
Is it possible to locate something like this, and do you know anyone around the Cologne area who can do this? I cannot. I would like to have an independent third party.
The goal is not to obtain a court expert opinion but to solve the problem and keep the house.
Thank you and best regards
Michael
If this question is in the wrong forum, please move it.
I will try to briefly summarize the problem.
Since this heating season, the neighbors have had a heat pump. Since then, my wife has been unable to sleep.
She hears a high-pitched tone throughout the entire house, similar to the whistle of an industrial vacuum cleaner. The problem is partly that it happens regardless of whether the outdoor split unit is running or not, and I do not hear this sound. She hears it almost constantly. To her, it sounds as if it is coming from the walls.
What I have already done:
Replaced various electrical devices that actually produced noises inside the house, such as the range hood, roller shutter switch, and electricity meter in the basement. However, these noises were always a humming sound, not the whistling noise.
Additionally, our heating system makes strong flow noises at different radiators at different times. The heating is now always turned off at night. Sleeping pills are currently a necessity.
My wife is at the point where we seriously have to consider selling the house, which would be a disaster economically and personally for us.
The neighbor is very cooperative in finding a solution.
Do you have any ideas?
Is it possible to locate something like this, and do you know anyone around the Cologne area who can do this? I cannot. I would like to have an independent third party.
The goal is not to obtain a court expert opinion but to solve the problem and keep the house.
Thank you and best regards
Michael
Hi,
if you think it might be the neighbor’s heat pump, they could try turning it off.
However, I hardly believe it is the heat pump. It usually makes a slight “whooshing” sound and maybe a bit of a “hum” inside.
But this depends on the model and manufacturer. You can barely hear my heat pump from 5 meters (16 feet) away.
if you think it might be the neighbor’s heat pump, they could try turning it off.
However, I hardly believe it is the heat pump. It usually makes a slight “whooshing” sound and maybe a bit of a “hum” inside.
But this depends on the model and manufacturer. You can barely hear my heat pump from 5 meters (16 feet) away.
N
nordanney16 Mar 2026 16:031. High frequency, most likely airborne noise
2. Turn off all devices, not just some—remove all circuit breakers ==> what happens to the noise then?
3. Flow noise is an issue for the heating engineer. Adjust pump and/or flow correctly
4. Use a mobile phone to locate the noise (ultrasonic analyzer or similar)
4b. Get an external device (bat detector or similar) for a small cost
5. Turn off your own power and the neighbors’ power completely ==> what happens to the noise?
6. Check for tinnitus, because if the noise can be proven not to come from inside the house or from neighbors (if everything is off, the sources of interference are eliminated), there is little left other than a biological cause
2. Turn off all devices, not just some—remove all circuit breakers ==> what happens to the noise then?
3. Flow noise is an issue for the heating engineer. Adjust pump and/or flow correctly
4. Use a mobile phone to locate the noise (ultrasonic analyzer or similar)
4b. Get an external device (bat detector or similar) for a small cost
5. Turn off your own power and the neighbors’ power completely ==> what happens to the noise?
6. Check for tinnitus, because if the noise can be proven not to come from inside the house or from neighbors (if everything is off, the sources of interference are eliminated), there is little left other than a biological cause
N
nordanney16 Mar 2026 16:06P.S. High-frequency "beeping" sound is a) reflected by walls or similar surfaces, or b) absorbed, so that it cannot be heard on the other side. Therefore, it is difficult to locate it externally (if it is high-frequency), as the physics of sound prevents it from traveling into the house or at least strongly absorbs it. How does it sound outside in the garden, in the open air?
Michael202 schrieb:
Do you have an idea? Yes, and I just checked: Professor Walter von Lucadou, although born in 1945, is reportedly still active in his field at his own parapsychological institute in Freiburg.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Similar topics