ECOOLTEC names Holger Dörre as CTO to advance sustainable refrigeration

ECOOLTEC Grosskopf GmbH has appointed Holger Dörre as Chief Technology Officer (CTO), effective July 2025. The mechanical engineer brings extensive experience in transport refrigeration and HVAC technologies from previous leadership roles at Liebherr Transportation Systems and FRIGOBLOCK.

Dörre most recently served as Managing Director Technology & Production at Liebherr Transportation Systems, where he oversaw the development and manufacturing of HVAC systems, hydraulic actuators, and modular refrigeration applications for rail and bus transport. Prior to that, he led development at FRIGOBLOCK.

CEO Henning Altebäumer emphasized Dörre’s contribution to sustainable technology: "As an experienced manager at group and medium-sized companies in the HVAC industry, Holger Dörre not only has extensive technical expertise, but also strong social skills. This makes him a great asset to ECOOLTEC as CTO.”

Dörre and Altebäumer previously collaborated at FRIGOBLOCK under the leadership of Peter Großkopf, where they worked on electric and environmentally friendly transport refrigeration systems.

Commenting on his new role, Dörre said: “ECOOLTEC is a young company and has the character of an agile start-up. I can make a big difference here and continue to promote sustainability in transport refrigeration.” He added that he will bring his experience with fully hermetic, electrically powered refrigeration systems using natural refrigerants to the company.

ECOOLTEC’s transport refrigeration systems use natural refrigerants with GWP values of 3 and 1, in contrast to conventional fluorinated gases like R452A and R410A. The company’s systems operate without diesel engines, using electric power from alternators, batteries, or external sources. This enables F-gas-free operation with up to 98% fewer pollutant emissions in alternator mode and zero local emissions in battery mode.

The technology also aims to reduce operational costs and emissions. According to the company, its systems consume 60% less fuel and produce 80% less CO2 than conventional diesel-powered units, while maintaining high cooling capacity for demanding distribution applications.