Assemblin accelerates its transformation towards future building systems through the acquisition of Fidelix

Assemblin strengthens its competence within building automation through the acquisition of Fidelix Group with subsidiaries (“Fidelix”) with annual sales exceeding SEK 540 M (EUR 54 m) and 360 employees. The acquisition means that Assemblin increases the ability to meet the future needs for climate smart and efficient installation solutions, and also strengthens the position on the Finnish market.


Fidelix was founded in Finland 2002 and has since then developed to become one of the leading players in the Nordics within climate smart building automation and management systems. With the mission to create smart buildings for a healthier future the company has developed several market-leading products and customer solutions that they sell, install and maintain in Finland and Sweden.

“The entire construction sector is changing, and we intend to actively participate in the transformation now underway. Fidelix’s cutting edge competence strengthens and complements Assemblin’s offering and accelerates our development journey. This acquisition is wholly in line with our strategic focus on technologies and digital systems that enhance smart and sustainable installation solutions. I am therefore thrilled to welcome Fidelix’s employees, customers and suppliers to the Assemblin Group”, says Mats Johansson, President and CEO of Assemblin.

The operations in Fidelix are characterised by entrepreneurship, strong competence and a high level of innovation and digitalisation, especially within cloud, IMD and IoT solutions. The company also has comprehensive installation and service operations but also sells individual customer solutions. Fidelix service packages include the Building Management Systems (BMS) Fidelix and Larmia as well as EcoGuard, a system for individual monitoring developed for multitenant residential properties. These solutions are installed across a large part of the Swedish and Finnish real estate stock.

“We are very proud of the operations and the services we have developed, and it is positive that we now will be a part of a growing player with high ambitions. We can see that we share the same vision and focus on quality, sustainability and efficiency. This transaction is beneficial to both parties and I look forward to a joint future”, says Tero Kosunen, President and CEO of Fidelix.

The acquisition also means that Assemblin strengthens its position in the Finnish building installation market. Fidelix will be organised as an independent business area in Assemblin.

The funding of the acquisition will be secured by a combination of new debt and equity, highlighting Triton´s continued support to Assemblin´s growth. The transaction is subject to approval from the competition authorities.

For more information, please contact:

Mats Johansson, President and CEO Assemblin,, +46 10 475 39 60

Åsvor Brynnel, Head of Communications and Sustainability Assemblin,, +46 10 475 39 48

Tero Kosunen, President and CEO Fidelix,, +358 50 444 12 00

About Assemblin

Assemblin is an end-to-end installation and service partner with operations in Sweden, Norway and Finland. We design, install and maintain technical systems for air, water and energy. Our vision is to create smart and sustainable installations that make buildings work and people feel comfortable. We do this through close local collaboration supported by a strong organisation. We have annual sales of approximately SEK 10 billion and 5,900 dedicated employees at more than 100 locations in the Nordic region. Read more at

About Fidelix

Fidelix is making buildings smart. Our high expertise in technologies is visible in solutions optimizing buildings energy costs, indoor climate and cost of operations. Our products are developed, tested and working every day in demanding and extreme climate conditions in the Nordics and positively affect the wellbeing of over one million people. Read more at