Ritter Solar evacuated tube collectors are mass-produced products, made in Germany. Their outstanding design, perfect processing, top quality and high energy yield, as well as their excellent price/performance ratio make them stand out. High-quality, corrosion-resistant and tested materials ensure smooth operation over a long lifetime. In order to increase the efficiency of the evacuated tubes, a highly reflecting, weather-proof CPC mirror (Compound Parabolic Concentrator) is placed behind the evacuated tubes (with the exception of OEM 21). The special mirror geometry ensures that even at unfavourable irradiation angles direct and diffuse sunlight falls onto the absorber. This considerably improves the energy yield.

Solar per Aqua Systems (SPA) consist of CPC evacuated tube collectors with installation and connection kits, solar station, solar controller, solar piping and an optional storage tank. The systems are especially suitable for simple connection to existing heating systems, making it easier to switch to solar energy. An existing hot water storage tank does not usually need to be replaced and becomes a solar storage tank.