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The Cleantech Directory

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Thermia has been manufacturing heat pumps since 1923 . Our goal is to develop the market's highest-quality coverage of geothermal heat pumps, air-to-water and air-to-air heat pumps intended for northern conditions, as well as the best property heat pumps on the market. All our heat pump solutions produce heat efficiently and carefree - saving both the wallet and the environment.

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Heat pumps are a part of our DNA. Our mission is to further optimize heat pumps in the service of people and nature. Our goal is to make our heat pumps easy to use and highly reliable for our customers. Our ambition is to have our heat pumps developed, produced and distributed by the best minds in the business. Our affiliation with the global NIBE Group helps us to accomplish these goals.

alpha innotec

Since 1998 alpha innotec has been developing, producing and selling innovative and user-friendly heat pumps. The continuous development of our products in our own research and development centre and our many years of experience as a manufacturer of energy-efficient solutions give you the security of knowing that you are making the right decision with a product from alpha innotec.

Bakker Groep

B.O.S. is focussing on service companies, but also exploration, production and drilling companies belong to the target group. Besides the oil and gas industry B.O.S. also focusses on geothermal energy. For this industry we also offer a large assortment of products and services.


Sustainable heating systems that stand for both independence and comfort - Beglau heat pumps have been developing pioneering technologies that meet precisely these requirements since 1990. Multiple innovation prizes and satisfied customers from all over Germany testify to our quality standards. Experience the further development of a sustainable heating system with Beglau heat pumps.

Caplin Solar

Caplin Solar’s patented Earth Energy Bank is an inter-seasonal thermal store that preserves the heat collected in the summer for use during the winter months.


CAUSEWAYGT targets industrial and large commercial customers that have facilities that use heat in the temperature range of 50ºC to 150ºC and in the capacity of 5 to 30 MW. A typical customer company, representative of many sectors, will have multiple facilities like this. CAUSEWAYGT‘s integrated geothermal energy system will be cost competitive with the fossil fuel predecessor AND deliver the required heat with 10 times less the emissions.

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