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We designed the most efficient flat-plate collector in the world. The 85% efficiency of the WATT 4000 S collector is the best result ever recorded by the reputed Institut für Solaregergieforschung in Hameln, Germany (ISFH), which tests collectors according to the SOLAR KEYMARK principles. It is a quality mark for solar products that confirms their compliance with the requirements of European standards.
The collectors are characterized by a solid and stable structure, which performs well even in difficult exposure conditions. The WATT solar sets ensure the comfort of use of solar collectors.
The world’s most efficient WATT 4000 S flat-plate collectors together with the improved structures of popular WATT 3000 S/SU flat-plate collectors and the new 2.5m WATT W8 ensure optimum utilization of free solar energy for heating utility water. They are perfect for heating pool water and they support every type of heating installation.
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