A solar geyser is the vessel in which the water is heated for solar applications. Solar geysers are similar to electrical geysers, there are however some differences. All solar geysers are usually IPX4, meaning that the solar geyser can be fitted on the outside of a roof, where the solar geyser will be exposed to the elements.
The direct solar geyser is also equipped with an extra water inlet and an extra water outlet, which is needed to connect the direct solar collector panel to the geyser. A direct solar collector panel is also known as an evacuated tube collector. These systems are frost resistant on highly effective, even in winter and has a noticeable effect on cloudy days.
Indirect Solar geysers are mainly used with a flat panel collector which is filled with glycol. Glycol is an anti-freeze substance which is needed to prevent the system from cracking and leaking when temperatures drop below 4°C.
Solar geysers have extra insulation to reduce heat loss and are made of very durable materials.
Solar geysers are also equipped with an back-up electrical element which is usually connected to a geyserwise or timer.
Solar geysers are always used with thermosiphon set-ups, but can also be used as split pumped systems.