What is the reliability of Evacuated tube solar water heaters?
Renowned research institutes from Germany and Australia originally invented & successfully experimented the solar water heaters with vacuum tube technology. A substantial number of solar water heaters have been installed all over the world and have been working very successfully for the last 10 years. Now this technolology is widely accepted all over the world many systems are working successfully through out the world even in developed countries like USA,Japan,Germany,Australia, Spain etc. Though the technology seems to be relatively new for Spain, it is never the less a well-proven & highly reliable product.