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Tailor-made energy concepts for applications requiring a medium output.

A gas driven combined heat and power (CHP) unit generates heat and power simultaneously. These units are sized to suit residential complexes and commercial operations. On the heating side, the CHP unit operates in parallel to a boiler. Both heat generators are connected to the heating system when providing heating water or DHW.

Gas engine units in biogas operation.

Viessmann Kraft-Wärme-Kopplung GmbH (formerly ESS - Energie Systeme & Service GmbH) is the Viessmann Group's CHP specialist and has been a member of the Group since 2008. With more than 25 years' experience in this product area, Viessmann offers efficient gas operated systems for combined heat and power generation. Alongside standard products, the company also manufactures combined heat and power units tailored specifically to customers' individual requirements.