Over the past few years, the ZEN Renewables solar thermal system is one of the most applied system in The Netherlands, Belgium, UK.

Because of the drain back principle the ZEN technique is abundantly efficient in large scaled water heating systems. The Turnkey approach of ZEN Renewables was highly appreciated by project developers, architects and installers. A direct communication between ZEN Engineering and 'the field" guarantees success in installation and services.

ZEN Reference - Solar Thermal Project Kilkenny (PDF)
ZEN Reference - Van Melle (PDF)
ZEN Reference - Bewleys (PDF)