Measures and materials to improve noise sources for heat pumps

If you have to meet particularly high fire protection requirements or are only allowed to use flame-retardant materials, our Basotect® G+ melamine foams with a wide variety of surface coatings are an option. However, these flame-retardant foams do not insulate as well as PUR recycled foam. For optimum insulation, however, our Teroform® plastic heavy layer/PUR foam combination noise insulation mats can be used, which also have a low flammability rating.

If the heat pump is located outdoors or in an area that is damp or wet, the foams mentioned above are not suitable as they absorb water and are damaged by the weather. Outdoors, you should line heat pumps with our Vibra®Quash polyethylene foam, as it does not absorb moisture and has very good weather resistance. However, you can also encapsulate the heat pump outdoors and then proceed as described above. The thicker you choose the foam, the better the insulation.

If the heat pump is located in a room, you can also choose to insulate the room. You would then simply need to fit the foam materials described above to the walls and ceilings to prevent the noise from escaping to the outside. However, most heat pumps also need to be ventilated. Of course, this cannot be directly combined with noise insulation. You must therefore also build a type of ventilation duct and line it with foam on the inside so that air can be drawn in or blown out. Ideally, you should nest the duct so that the sound cannot escape directly - e.g. in a U-shape. A suitable foam could be a Silphon® convoluted foam with a thickness of 30-60 mm, which you glue to the inner walls of the duct.