A solar collector is the device that is typically placed North facing on your roof which absorbs Sun light and converts it into heat. The heat produced by the solar collector is in turn used to heat the water inside your geyser.

There are various types of solar collectors on the market and the two most popular types are:

• Evacuated tube collectors
• Flat plate collectors

Evacuated tube collector

Demo of how hot evacuated tubes can get in just 30 minutes:

How evacuated tubes are manufactured:

Flat plate collector

Demo of how flat late collectors are used in commercial systems.