bluu unit Acquires WILMS Kälte‑Klima‑Lüftung Systemtechnik

bluu unit Acquires ACI Group and Heuberger Kälte Klima GmbH

August 4, 2025

HVAC & Mechanical

bluu unit, a Triton Smaller Mid‑Cap Fund II portfolio company, has acquired ACI Group (Düsseldorf) and Heuberger Kälte Klima GmbH (Bayreuth) to strengthen its regional footprint and build a nationwide alliance in sustainable refrigeration, air conditioning and ventilation technology. The acquisitions add about 127 employees across the two businesses and bring specialist capabilities in CO2 and natural refrigerant systems; financial terms were not disclosed.

bluu unit (Triton-backed) Acquires Koschke GmbH and HESAN GmbH

March 20, 2025

HVAC & Mechanical

bluu unit, a Triton Smaller Mid‑Cap Fund II portfolio company, has acquired Koschke GmbH and its subsidiary HESAN GmbH, adding established refrigeration, air‑conditioning and ventilation service businesses in eastern Germany to its alliance. The deal strengthens bluu unit’s regional network and service capabilities in Brandenburg, expanding its footprint for sustainable HVAC and refrigeration solutions.

Triton Acquires Majority Stake in Kälte Eckert Group

July 28, 2022

HVAC & Mechanical

Triton (Triton Smaller Mid‑Cap Fund II) has acquired a majority stake in Kälte Eckert Group, a German specialist in refrigeration and air‑conditioning systems using natural refrigerants. Triton is investing alongside management (Michael and Holger Eckert) to support the company’s regional expansion and further develop its sustainable refrigeration capabilities; terms were not disclosed.

TSG Group Acquires Kälte-, Klimatechnik Manfred Wegner GmbH

June 25, 2021

HVAC & Mechanical

TSG Group has acquired Kälte-, Klimatechnik Manfred Wegner GmbH (Wegner), a Wismar-based refrigeration and air conditioning maintenance and installation services company. The acquisition expands TSG's HVAC capabilities and geographic footprint in Northern and Eastern Germany and brings Wegner's ~98 employees and strong supermarket/food-retail customer relationships into the TSG platform.

CoolSys Acquires Lima Company

August 1, 2023

Industrial Services

CoolSys has acquired Lima Company, a Philadelphia-based provider of commercial and industrial HVAC, refrigeration, plumbing and energy services, expanding CoolSys's presence in the Mid-Atlantic. Lima Company — founded in 1976 with about 100 employees — will bring local service capabilities and experienced technicians to CoolSys's nationwide platform.

Rehlko Acquires The Wilmott Group

August 4, 2025

Energy

Rehlko has completed the acquisition of The Wilmott Group, a U.K.-based supplier of critical back-up power solutions, to expand its EMEA operations. The deal integrates WB Power Services and Wiltech Acoustics into Rehlko, strengthening the company's engineering, manufacturing and service capabilities to better serve data centers, healthcare, education and other mission-critical sectors across the region.