How to avoid noise emissions from a heat pump

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When you decide to buy a heat pump, there are many factors to consider. One of the most important aspects that is often overlooked is the sound level of the device. In this blog post, we'd like to give you some tips on how to ensure that your new heat pump system is not only efficient but also quiet.

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Pay attention to the sound level

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Modern heat pump systems reach the maximum specified value of 55 decibels without any additional measures. But it is important to note that the volume level can often be reduced sufficiently by choosing the correct installation location. A border distance of three meters from the neighboring property is recommended. If this is not possible for structural reasons, sound insulation optimizations can help to reduce noise levels to a minimum.

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Choose devices with low sound power levels

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Quiet heat pump models can be identified by their low sound power level of less than 50 decibels. Make sure that the device has as few low-frequency acoustics as possible and that there are no annoying sounds such as whistles or buzzing.

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The right installation location is crucial

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The optimal installation location of heat pump modules should take into account visual aspects, an adequate air supply, low noise pollution and sufficient distance from buildings. It is important to prevent short circuits between outdoor and outdoor air. The installation between walls is inconvenient, as the sound amplifies here. Lawns, on the other hand, have a sound-absorbing effect and are well suited for installation.

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Use sound-absorbing materials

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If, despite all measures, the heat pump system is still too loud, the use of sound-absorbing materials such as fleece or foam can reduce the volume by up to 10 decibels.

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Structure-borne sound decoupling and shielding

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Vibration-decoupling compression base plates should be used during installation in order to reduce external compressor sound to a minimum. Appropriate sheathing of the device, vertical mounting or elastically damping installation can further reduce the outgoing sound of the compressor.

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Heat pump operation

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The fan is considered the main source of noise in a heat pump. Therefore, the location should be chosen carefully. Disturbances caused by operating noises in the personal environment are significantly lower if there is no direct line of sight to windows in neighboring or private living spaces.

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The ideal solution

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Installing the heat pump in a building is the quietest functional option. In this case, attention should be paid to interrupting structure-borne sound transmission using flexible cable connections.

We hope this guide helps you make an informed decision and keep noise emissions from your heat pump system to a minimum. We at autarc will be happy to answer any further questions you may have.

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Image rights: BWP