Viessmann has sold 10,000 units globally of its Vitovalor fuel cell technology, which simultaneously generates electricity and heat in buildings. The milestone model was presented to Essenpreis Heizung & Sanitär GmbH in Östringen, a longstanding installation partner of Viessmann in Germany. It will be installed in a home in Karlsruhe. The highly efficient Vitovalor micro-CHP […]