Innovative Noise Reduction in the Heat Pump Industry: Introducing the Game-Changer

Welcome to an exploration of the latest advancements in noise reduction technologies within the heat pump industry. Heat pump manufacturers and HVAC professionals understand the importance of both efficiency and acoustics in heat pump systems. Noise pollution from heat pumps has been a persistent challenge, impacting not only the comfort of indoor spaces but also the satisfaction of property owners and tenants.

Health care systems around the globe are taking on an annual cost of USD100 bn to cure diseases related to noise pollution.

In this blog post, we’ll take a deep dive into the cutting-edge noise reduction technologies that are revolutionizing the heat pump industry. Furthermore, we’ll introduce our own breakthrough solution that is set to redefine the standards of quiet HVAC systems.

The Challenge of Heat Pump Noise

Before we delve into the innovations, let’s address the noise challenge posed by heat pumps. Whether you manage commercial buildings, hotels, or residential complexes, the constant hum and vibrations of heat pumps can disrupt the tranquillity of these spaces. This has prompted the industry to seek innovative solutions that strike a balance between energy efficiency and noise reduction. Heat pump noise contains many sub-components. The main ones are the broadband “woosh” of the air flow, and the tonal noises related to the spin of the fan and compressor. We have recently broken down the concepts of heat pump noise in this blog post.

Passive Noise Reduction Technologies

Traditionally, manufacturers are familiar with several well-established noise reduction techniques that are currently implemented in combination in most modern heat pumps.

Before mentioning them, we are not to forget the vitality of good vibration isolation treatment. Careful design of heat pump mechanics is instrumental in making them quiet and durable.

  1. Sound-Insulated Compressors

Another breakthrough comes in the form of sound-insulated compressors. These compressors are designed with specialized materials that absorb and dampen noise, reducing the overall sound emitted by the heat pump system.

  1. Variable-Speed Compressors

Variable-speed compressors adjust their operation according to the specific heating or cooling demands, reducing the need for high-speed operation and, consequently, noise levels. These compressors not only contribute to noise reduction but also enhance energy efficiency.

  1. Sound Barriers and Enclosures

Sound barrier enclosures are designed to envelop heat pump units, effectively containing noise within the enclosure. These enclosures are customizable and can be tailored to fit various heat pump configurations. They do, however, come with a fairly high price point, take a lot of space, and have limited efficiency at the low frequencies.

Introducing Active Noise Cancelling

At Hummble, we’ve been at the forefront of innovation in the heat pump noise space. Our relentless commitment to solving real-world challenges has led to the development of the only active noise cancelling (ANC) system for heat pump and HVAC applications currently on the market. By employing sensors and microphones, ANC systems can detect unwanted noise and generate sound waves to cancel it out. This results in a quieter, more pleasant environment for occupants.

With our solution, we are targeting the components of the heat pump noise that other techniques mentioned above are not able to cope with. Combining the benefits of both provides an unparalleled solution for heat pump noise.

Here’s how our system stands out:

  • Significant Reduction of Tonality: Our product catches the problematic low frequency tones and notches them down in a way that was previously thought unattainable, ensuring a serene and pleasant environment. These tones are the ones that penetrate inside buildings, adversely affecting the quality of life and wellbeing.
  • Seamless Integration: Designed for easy installation and compatibility with various heat pump systems, our solution minimizes disruption during installation and setup. While it is a system that is fully hidden inside the outdoor unit, our team has worked hard to make it as easy as possible to install, needing no interaction with the heat pump control system itself.


As the heat pump industry continues to evolve, the integration of novel noise reduction technologies is paramount. These innovations nfot only improve the quality of indoor spaces but also help to reduce a very significant health impact that environmental noise has on the people.

At Hummble, we are proud to be at the forefront of this revolution. We invite you to explore the future of quiet living.

We are working multiple heat pump manufacturers integrating our solution in a wide variety of products.

Contact us today to embark on the journey to a quieter, more efficient future for your clients and your business.