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Efficient Sound Insulation for Heat Pumps

Introduction

In densely populated residential areas, operating air-to-water heat pumps is often a legal and neighbourly challenge. Conventional soundproof enclosures are frequently:

Too bulky: they consume valuable space in gardens or on balconies.

Susceptible to weather: mineral wool absorbs moisture, loses effectiveness and can deteriorate.

Performance-reducing: excessive flow resistance causes icing problems and reduces pump efficiency.

  • Year2026
  • IndustryHeating, Ventilation, Air Conditioning (HVAC)
  • Scope of workDevelopment & implementation
  • Timeline5 weeks

Solution

Efficient Sound Insulation for Heat Pumps

Using Absora-sheet (aluminium or stainless steel), a highly effective, slim and weatherproof soundproofing solution can be implemented, tuned directly to the frequencies of the heat pump.

Why Absora-sheet is the ideal choice for heat pumps:

Weatherproof & hydrophobic: unlike open-pored foams or wool, Absora-sheet is completely resistant to rain, snow and humidity. Its acoustic performance remains constant for decades.

Compact design: thanks to high absorption at low material thickness, the enclosures can be built much slimmer. This saves space and looks more refined.

Optimal flow technology: the smooth surface and precise micro-perforation minimise pressure loss. The heat pump needs less effort to draw in the required air, which keeps the COP value stable.

Hygiene & maintenance-free: no fibre release into the environment, and easy cleaning by rinsing with water.

Results

Acoustics: significant reduction of low-frequency emissions for near-inaudible operation during evening and night hours.

Sustainability: 100% recyclable metal, with no environmentally harmful foams or composites.

Design: the narrow wall thicknesses enable compact, attractive designs that blend seamlessly into modern architecture.