Solar Thermosiphon System has High efficiency – the purchase pays for itself after a short time, thanks to energy savings. Available in three different tank sizes to meet your individual hot water consumption requirements (150 l, 200 l and 300 l ). The thermosiphon solar thermal system is easy to install on your roof. Whether you have a flat or pitched roof, three different installation options are available to ensure that the thermosiphon solar thermal system can be installed in your home securely to resist any weather conditions. The thermosiphon solar thermal system effortlessly handles wind and bad weather for many years. High-grade materials and exemplary workmanship make this possible. For example, the cylinder has particularly effective corrosion protection.