In the last few years the prices of the fuels are rising and at the same time the interest in solar water heaters and solar collectors as well. This is like this because the solar water heat systems can provide hot water from 50 to 75% for daily wants in many climatic areas.
The technology for water heating from the sun has a higher efficiency than other solar technology. Of course this efficiency depends on the choice of area and location as the vacuum tube solar collectors have over 60% efficiency in standard conditions of work because of their low heat loss. To heat water from the sun is especially suitable for swimming pools, daily wants and structures heating.