About HIAK

We are constantly developing and expanding the company with new services and products. Today, we design and deliver solutions for a variety of applications, including:

• Test cells for engines and aircraft
• Machine enclosures and control rooms
• Industrial and ventilation sound silencers.
• Sound silencers for gas turbines.
• Sound silencers for transformers, reactors, and generators.
• Soundproof wooden doors, steel doors, and gates for environments with high sound requirements.

The wooden door is further developed and the performance is increased to RW 49 dB. At the same time, the glazed wooden door with RW 48 is introduced.

The performance of the wooden door is further increased to TLE 48 dB.

Our revolutionary fresh air valve was developed in response to the Swedish Transport Administration's need for effective noise reduction for residential areas along railways and highways. It is a groundbreaking noise-dampening fresh air valve that sets a new standard in sound reduction, offering eight times better noise attenuation than the nearest competitor!

We introduce glazed sections with wooden frames, which quickly becomes a popular product for, among other things, offices and schools where visibility into rooms is needed.

We add the development of transformer enclosures to our product portfolio.

In 1997, HIAK became the first acquired company by AMYMONE INDUSTRI AB, now Inducore AB, which today consists of around 20 companies.

The start of the Wooden Door. Has since grown to become a very popular and well-liked door.

About 40 years after the first mobile silencer, Hedemora verkstäder is divided into several companies. The noise division is transformed and the independent company Hedemora Industriakustik AB, now HIAK AB, is formed.

The Hedemora Door was founded in 1975 in Hedemora, a town with a rich history and tradition in craftsmanship and industry. We have always strived to combine traditional craftsmanship with modern technology to create doors and gates that, not only meet today's requirements but also are durable and aesthetically pleasing. Our commitment to quality and customer satisfaction has made us a leading player in the market.

The first door, the steel door, was developed and laid the foundation for what would later become the Hedemora Door.

The beginning of the development of our silencers and gas turbine enclosures. The work continues to this day, and we are constantly striving to find more efficient solutions.

HIAK's journey begins as early as 1947. A mobile silencer for functional testing of Sweden's first military jet aircraft - "Flygande Tunnan" is developed and manufactured at Hedemora Verkstäder, which was then part of Nordstjernan AB. The product was a success and the foundation for the "noise division" within Hedemora Verkstäder was laid.