Solar water heater are basically composed of three elements: the structure, the tank and the vacuum tubes.
Solar water heater vacuum tubes are responsible for transforming solar energy into thermal energy to heat the water. They are made with the confidence offered by pyrex ® and a high German borosilicate technology. These tubes are designed for drastic climates of the puna, resisting up to a hail of 3 cm.
Solar water heater tank's function is to store the water, using a thermal insulator, which can keep the hot water for up to 72 hours. In addition, it is made of stainless steel (SUS3042b certification, food grade) and inside it is coated by surgical steel.
Solar water heater structure is what gives support to the whole thermal. This is stainless steel too and is tough and durable.