Tests carried out on 160+ different solar panels by the internationally acclaimed research organisation Solartechnik Prufung Forschung (SPF) found that the gross efficiency of flat plate collectors was considerably higher than evacuated tube collectors…...

Give your customers sufficient solar capacity to provide for their daily consumption
Being an active plumber, you often find yourself in a position of having to recommend to customers the correct type of solar water heating installation.

Indirect solar geysers use heat transfer fluid (normally glycol) to carry energy from the solar collector and transfer the energy to the water through a heat exchanger. The purpose of using this technique is to prevent environmental damages to solar collectors such as freezing damages, corrosion and clogging.