May 2, 2025

WILMS Kälte-Klima-Lüftung Systemtechnik GmbH becomes part of the bluu unit.And expands the K3 Kälte Klima Köln GmbH team with an experienced and customer-oriented unit.

The bluu unit continues to grow - and expands its presence in North Rhine-Westphalia. The alliance has become even more powerful with the addition of WILMS Kälte-Klima-Lüftung Systemtechnik GmbH to K3 Kälte Klima Köln GmbH.

K3 Kälte Klima Köln itself has long been an integral part of the bluu unit - an alliance of regional specialists for refrigeration, air conditioning and ventilation technology in Germany. With the addition of WILMS GmbH, a further team of experts is now joining the alliance, which primarily serves commercial customers from the industrial, chemical, production and financial sectors and can look back on more than 60 years of experience. WILMS GmbH has been active on the market for over 30 years and has been known for reliable solutions in air conditioning, ventilation and refrigeration technology ever since. The philosophy: customer-centered work, technical know-how and a familiar corporate culture.

"The bluu unit is also characterized by family structures, as each individual bluu unit member retains its own identity and structure. This fits in with the core values of WILMS GmbH and therefore both K3 Kälte Klima Köln and the bluu unit alliance fit in perfectly with our values"

says Ralf Wilms, who has been running the company founded by his father in 1963 as H. Walter Wilms GmbH & Co. KG, which was founded by his father in 1963, has been run by the second generation as Wilms Kälte-Klima-Lüftung Systemtechnik GmbH since 1991 and has steadily expanded.

The decision to join the bluu unit is part of WILMS GmbH's strategy for the future and a clear commitment to further development. "With the challenges that we are already facing on the market and will continue to face, a group simply has an advantage," says Ralf Wilms. With the merger, the established structures and the well-established team in Mönchengladbach will remain in place - supplemented by new strategic resources from the bluu unit alliance and K3 Kälte Klima Köln. The management of WILMS GmbH will be supplemented by Oliver Besiroglu, Managing Director of K3 Kälte Klima Köln GmbH. "With him, we have put together a really powerful team between Cologne and Mönchengladbach," says Nicolo Freyberg, CDO and Managing Director of bluu unit GmbH.

And Oliver Besiroglu adds:

"Together we are opening a new chapter. With shared values and combined strength, we are turning one and one into three. That is WILMS 2.0: real cooperation for the future."

bluu unit further strengthens its position as a leading group of companies in the field of refrigeration, air conditioning and ventilation technology by joining WILMS GmbH with K3 Kälte Klima Köln. For customers, this results in stable partnerships, sustainable solutions and the highest level of technical expertise - locally anchored, nationally networked.

"For us, only bluu unit offers professional structures, securing the future of the company and its employees, combined with decentralization and proximity," emphasizes Oliver Besiroglu, who expects the central strategic support, technological excellence, coupled with short decision-making paths, to result in even greater implementation strength, even for supra-regional projects.

(from left to right) Oliver Besiroglu, Nicolo Freyberg, Ralf Wilms

More about WILMS
More about K3 Kälte Klima Köln