Solar Water Heater offered by us are available with following key feature as: Solar tubes are the absorber of the solar water heater. They absorb solar energy converting it into heat for use in water heating. Solar tubes are also referred to as evacuated tubes, as the space between the two glass layers is evacuated to form a vacuum.Each solar tube consists of two glass tubes made from extremely strong borosilicate glass. The outer tube is transparent allowing light rays to pass through with minimal reflection. The inner tube is coated with a special selective coating (Al-N/Al), which features excellent solar radiation absorption and minimal reflection properties.so that the system can easily work without the heat loss.Now the system is highly efficient with excellent absorption.