GREENoneTEC vacuum-tube collectors are based on the proven Sidney Principle. The vacuum reduces the heat losses compared to conventional flat collectors. Special reflection mirrors provide an optimum light beam, even at low sunlight levels.

• Maximum solar yields even at low outside temperatures due to the low levels of heat loss and the highly selective coated vacuum tubes
• Optimum utilization of diffuse or oblique sunlight as a result of high-gloss coated, UV-resistant reflection mirrors
• Use of evacuated borosilicate glass
• Easy maintenance, individual vacuum tubes can be exchanged without emptying the solar circuit
• Easy-to-install fastening system for all standard roof types

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