August 4, 2025

On course for growth with bluu unit:The ACI Group and Heuberger Kälte Klima GmbH strengthen the bluu unit

With the ACI Group and Heuberger Kälte Klima GmbH, bluu unit welcomes two strong specialists in refrigeration and air conditioning technology to the alliance. Both companies stand 100% for forward-looking craftsmanship, technical excellence and active responsibility. The alliance is thus strengthening its central competence and expanding its network. Allianz now has 23 locations and over 180 new colleagues have joined this year alone.

ACI Group: Highest standards and quality at all levels.

With the ACI Group from Düsseldorf, several specialized companies are expanding the bluu unit alliance. ACI Haustechnik, ACI Kältetechnik and GPE Elektrotechnik stand for 30 years of accumulated experience, customer-oriented processes and operational strength.

ACI's focus is clearly on refrigeration, air conditioning and ventilation technology. ACI Kältetechnik stands out with its complete project support for commercial customers. The young, dynamic team ensures complete customer satisfaction with reliable craftsmanship and good cooperation. Projects such as the holistic expansion of new laboratories, the renewal of heating systems or the complete conversion of air conditioning technology in commercial buildings demonstrate the enormous range of the group, which also knows how to impress with its 24/7 service and its innovative solutions from planning to implementation and maintenance.

"We want to grow sustainably and together - with the bluu unit, but also as a team. The alliance gives us support and new opportunities."

says Marc Abelen (center), Managing Director and founder of the ACI Group.

Nico Sommer (left), Managing Director of ACI Kältetechnischer Anlagenbau and GPE Elektrotechnik // Ernst Schüler (right), Managing Director of ACI Haustechnik and GPE Elektrotechnik

Heuberger Kälte Klima GmbH: regional strength, fun with technology and sustainable goals.

Over 90 years of experience, special expertise in handling natural refrigerants - especially CO₂ - and a young, dynamic team of 81 employees make Heuberger the ideal alliance member. The four locations in Bayreuth, Munich, Coburg and the Rhine-Main region cover a wide range of industries and services - from food retail to pharmaceuticals and logistics. From conception, individual planning and project planning to installation, commissioning and maintenance.

Heuberger is particularly proud of its high level of expertise in challenging projects, such as the expansion of an 80,000 m² logistics center with innovative air conditioning and heat pump technology. Heuberger likes to set clear signals for quality, sustainable solutions and for its own future.

Frank Heuberger, Managing Director of the family business since 1987, emphasizes:

"With the bluu unit, we are combining tradition and experience with the future and creating new perspectives for employees and customers. The bluu unit concept is convincing. We can concentrate on our core competence and at the same time benefit from joint progress."

A strong signal for the market

With ACI and Heuberger as new members, bluu unit is continuing its ambitious growth strategy and reaffirming its claim to be the leading alliance for refrigeration, air conditioning and ventilation technology in Germany. All members will remain independent and regionally anchored, while benefiting from centralized support, synergy effects and a strong community spirit.

The year 2025 of the bluu unit in figures

4

Acquired groups consisting of 7 independent specialist companies

7

Further locations

180 +

new colleagues

In 2025 alone, four groups consisting of seven independent specialist companies have already joined the alliance. What particularly sets bluu unit apart: The focus is 100% on refrigeration, air conditioning and ventilation technology - a clear unique selling point in a diversified market.

"We don't grow arbitrarily - we grow in a targeted manner. With partners who share our self-image, expand our focused expertise and with a clear commitment to sustainable refrigeration and air conditioning technology."

says Nicolo Freyberg, Managing Director (CDO) of the bluu unit.

More about ACI
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