Solar Hot Water

Roof Mounted

Envirosun’s Thermosiphon System (TS) is one of the most advanced hot water systems available, offering maximum efficiency and a cost effective solution for most applications. The hot water storage tank and the solar collector panels are roof-mounted as one seamless unit.

Water is heated in the flat plate solar collector, and the smart thermosiphon design uses natural convection to move it through the system into an insulated storage tank located above the collector, minimising energy requirements. This design outperforms other types of systems and offers a superior level of efficient, economical water heating.

The clever design and engineering of the Envirosun Thermosiphon System utilises the strongest materials and state-of-the-art tank protection systems to ensure a long operating life in any environment, from freezing temperatures to extreme heat. The latest cutting edge technology and the cumulative advancements of Envirosun’s 25 years industry experience combine to offer the ultimate in durability, reliability and affordability.

Solar panelhouse with solar







Split System

Envirosun’s Active Solar ‘AS’ range of pumped or active solar hot water systems offer greater flexibility, improved aesthetics and higher capacity, along with maximum efficiency and reduced energy costs. Only the solar collectors are installed on the roof, harnessing energy from the sun and transferring it to a ground-mounted storage tank. The tank can be sited indoors or out, in any convenient or out-of-the-way location. 

The operating principle is simple - when the solar collectors are able to add heat into the storage tank, a small pump is switched on to circulate hot water from the collectors and replace it with cool water from the tank. Once the tank is full of hot water, the pump is switched off, but ready for the next cycle. 

While pumped systems have been around for many years, modern electronics and materials have brought improvements in both function and reliability. Today’s Envirosun AS systems adopt many of these technological advances and blend them with our collector technology to create a range of high-performance active solar hot water systems that maximise solar absorption and storage, whether you live in a low or high radiation area.

Solar split