About Cooll

Our adventure


Our adventure started in 2003 from the University of Twente, with the preparation of a space mission for ESA: develop a vibration-free cooler for -270 degrees Celsius without maintenance and moving parts. The resulting technology forms the basis of our heat pump. That is why we are called Cooll.

In 2008 we started research into sustainable heating and cooling based on adsorption technology. This research showed that the cooling application is technically difficult because it is an application for foreign markets, but that the heating application is very interesting. In 2009 Johannes Burger, Stefan van Uffelen and Robert Jan Meijer founded Cooll.


The first working system was built in 2011, which does not yet achieve the ultimate desired temperatures and power but demonstrates the principle.

The activated carbon was developed in collaboration with a development partner in the USA. In 2016, we bought a fully equipped factory, including patents, in Texas and transported it to the Netherlands, where we then rebuilt it.

The first wall-mounted model was developed in 2018. This set-up has now heated our office building for two winters. Parallel to this, we worked on the tooling to be able to produce the heat pumps.

We also have an extensive programme to demonstrate the lifespan of the components, carried out in collaboration with partners such as Fraunhofer and Holland Innovative.

Product development of the first product started in 2020 and the team expanded considerably.

In the winter of 2020-2021, we heated a house in Uden for the first time with a stand-alone set-up, including measuring equipment and safety systems.
The Cooll team is currently working on the version of the heat pump that will soon be introduced on the market. This will be tested in larger quantities in homes in 2021.

Our team


Cooll is a spin-off company of the University of Twente (UT), founded in 2009 and located in Enschede. Initiator Johannes Burger has been working at the UT on innovative cooling and heat pump systems since the mid-1990s, including in projects for ESA (European Space Agency). Co-initiator Stefan van Uffelen has a lot of experience in sustainability projects. As such, he was quartermaster and, until 2014, the director of the Dutch Green Building Council, a successful initiative to make the built environment more sustainable. The team also consists of the following people: Arno de Jager, Bas van Laar, Erwin Hondebrink, Jan van Buuren, Jelmer Dijkstra, Marc Gort, Sebastiaan van Vliet, Wietse Offringa, Anton Verbeek, Bart Custers, Eva van Beurden, Hassan Firouzbakht, Henk Kolk, Marco Stempher, Quirijn Eppinga, Reinier Heeres, Ronald Brinks, Sven de Ridder, Ursula Huiskes, Baidaa Ibrahim, Coen Berning, Jan Bouwhuis, Kevin van der Poel, Marko Sofijanic, Martijn Al, Reinier Imhoff, Warner Hoekstra, Willie ter Heide.

We also regularly have graduates and interns joining our team. A large part of our team can be found on the above picture made in November 2022.

The management consists of:


Our Advisory Board


Cooll is supported by an Advisory Board, which includes many experts from the field:


Our partners

Cooll works closely with a large network of project partners, technology partners and suppliers, both at home and abroad. The partners contribute to the technology through the valued efforts of people and by making knowledge, technology, network and financing available. On the side, we have several important partners that make our work financially possible.

Cooll’s mission ties in seamlessly with the UN’s Sustainable Development Goal 7:

SDG 7: Ensure access to affordable, reliable, sustainable and modern energy for all