Program
Heat pumps play a key role in achieving energy efficiency and climate protection goals. However, their growing use in densely populated residential areas also brings new challenges – particularly with regard to low-frequency noise emissions. Recent studies by the German Environment Agency (UBA) show that continuous low-frequency sounds, such as those generated by heat pumps, can cause sleep disturbances, cardiovascular stress, and long-term health issues even at relatively low sound pressure levels. This highlights the importance of addressing noise and vibration emissions already in the design phase of modern heat pump systems.
The origin of these emissions is mechanical: vibrations, primarily produced by the compressor, are transmitted to the unit’s casing and surrounding structures, increasing both structure-borne and airborne noise levels. Effective noise reduction therefore starts with targeted vibration isolation directly at the main excitation source. This presentation explains the physical principles of vibration isolation and demonstrates how optimized mechanical decoupling can significantly improve the acoustic performance of heat pumps.
We will focus on recent developments in the industry, particularly among manufacturers transitioning to next-generation heat pumps equipped with a two-stage vibration isolation system made of polyurethane (PUR) directly at the primary source. This approach isolates the compressor in two stages with a low natural frequency, substantially reducing the transmission of low-frequency vibrations and the resulting airborne noise.
By combining material expertise with application know-how, we can contribute to developing solutions that effectively minimize vibrations and noise emissions—enabling quieter, healthier, and more socially compatible heat pump systems for residential environments.
FOR YOUR INFORMATION: On 25 November 2025 at 9.30 am (CET) the webinar will take place in German.
