On-Roof collectors
The newly developed flat-tube absorber (Flaro) with high selective coatingwas specially developed by swt solar for supplementary heating. The high-tech absorber provides high performance at low temperatures, as they are needed in low-temperature heating systems.

Roof integrated collectors
The use of first class materials gives the Kelvin 4 a long life with maximum efficiency. The frame construction of the collector is of pine wood. Full integration of the seals in the aluminum cover section, full UV protection and an extremely long life.