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Envirosun Queensland, NSW, Vic, WA, ACT, Darwin and SA

The Envirosun TS Plus 300 litre, 2 panel thermosyphon solar hot water heater is a superior made hot water unit, with the roof mounted cylinder manufactured in Holland from high grade 444 Stainless Steel for a longer life expectancy comes with 2 high solar absorption solar collector panels. These solar panels are available in 2 different size, the 2BC panel is 2m2 and the 25BC panel is 2.5m2 in size giving you a solar collection area of 4m2 and a whopping 5m2 , 20% larger than most other brands for solar hot water systems on the market.

The Envirosun TS Plus comes with 7 year tank and panel warranties

Envirosun’s Thermosiphon System (TS Plus) is one of the most advanced solar hot water systems available in todays market, offering a extremely high efficiency rate and a cost effective solution for most domestic homes. The hot water storage cylinder and the solar collector panels are roof-mounted together as one seamless combined unit. Water is heated in the flat plate solar collector, and natural convection of hot water rising moves the water through the system into an insulated storage tank located above the solar panels on the right hand side as cooler water from the tank falls from the left into the lowest part of the solar panels, minimising any energy required.  This design has been in roof mounted solar water heaters since the development of solar water heating and 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 valves and systems to ensure a long operating life in all environments, from the 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.

Envirosun is a Western Australian owned company that is operated with true family values and integrity,  they have the highest level of quality control which makes the Envirosun Solar Hot Water choice a smart one, rather than the foreign owned, multi national corporation run solar hot water manufactures

Contact us for more details and how we can supply your trade business, new home and large scale construction developments with this quality affordable solar hot water systems


Envirosun solar hot water systems for all Australian environments and locations


Envirosun TS Plus Solar hot water system range


Envirosun solar hot water systems are made of the world most advanced solar products


The Envirosun Thermosiphon Storage Cylinder

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Envirosun pioneered and mastered the use of Type 444 Ferritic Stainless Steel in the construction of the storage cylinders in the TS Plus and THX Plus solar range

Compared with traditional austenitic stainless steel (such as Type 316L and 304L) ferritic stainless steels offer major performance advantages. In particular, Type 444 out-lasts Type 316L when it comes to resisting localized corrosion or pitting attack at elevated water temperatures.

Generally, Type 444 is a highly durable and trouble-free material that offers significant live cycle cost advantages. Stainless steels derive their corrosion resistant properties through the inclusion of stainless steel. However the key to the enhanced performance of this Type 444 is the addition of molybdenum and chromium as further alloying elements (traditional austenitic grades incorporate nickel). During the final stage of the factory guarantee period you should arrange for an end-of-warranty service to be carried out. The Envirosun TS Plus and THX Plus quality European made 444 stainless steel cylinders have the final assembly here in Melbourne, Envirosun have the highest level of quality control

Every single Envirosun TS Plus and THX Plus solar hot water system is tested and checked during manufacturing

All Envirosun solar hot water heaters have a 7 year tank warranty

The Envirosun Solar Panels

Envirosun TS Plus solar hot water systems
Envirosun v's Solahart solar hot water panels

Envirosun Flat-plate Solar collectors

The absorber plates in our solar collectors are designed to absorb more of the sun’s energy and radiate less back to the environment as heat.

Our solar absorbers receive more solar energy

Unlike conventional glass that soaks up a significant amount of solar radiation, the glass cover on an Envirosun solar collector allows over 90% of the sun’s radiation to reach the solar absorber. We use a low-iron, high-transmittance glass cover which means that there’s more energy available to create more hot-water. And to ensure they keep working for longer, our glass covers are toughened to protect against breakage. To find out how low-iron glass improves the optical properties of a solar collector cover, read: our solar glass.

Our solar collectors convert more solar energy into useful heat

Envirosun absorbers are coated with a high-performance black-chrome treatment to create a surface that absorbs more and emits less solar radiation. To find out how black chrome works to dramatically improve the performance of a solar absorber compared with black paint and other surfaces, read: Our absorber surface.

Our solar collectors are designed to last

The absorbers are manufactured using high-quality copper for both the riser tubes and the absorber plate. Copper resists the effects of corrosion on the inside and outside of the absorber. The collector trays are produced from aluminium, a material renowned for its strength and ability to withstand extremes of weather. Copper and aluminium together – the reason you can be assured of a long service life from your Envirosun solar collectors.

All Envirosun solar hot water heaters have a 7 year panel warranty

The Envirosun Heat Retention Insulation

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Polyurethane is formed through the chemical reaction of two liquids with the mixture then injected into the contained space around the hot water storage tank and outer casing.  As the mixture is exposed to air, it expands to up to 10 times its liquid volume. In so doing it fills all of the contained space including the smallest of crevices. As the mixture dries it hardens to form a closed-cell structure that is a rigid and impermeable structure. Compared to fibreglass insulation that allows air to permeate, polyurethane is airtight. The resulting insulating barrier works at three levels: the gases trapped in the cells resist conductive heat losses; the air-tight structure prevents convective heat loss otherwise caused by the flow of warm air to the cooler surrounds; and condensation heat loss, normally caused as warm air is introduced to cold air, are avoided.

The solar hot water cylinders of all Envirosun storage tanks are encased within a polyurethane foam insulation system. The polyurethane mixture is pressure injected into the space between the cylinder and the external sheet metal casing.

The combination of metal and foam contributes to structural rigidity and is the basis of its excellent heat retention properties. Heat retention = more hot water for a longer periods of time and that simply equates to money and energy cost savings

Envirosun solar hot water panel
Envirosun use solid brass fittings
Envirosun use the best solar valves from AVG
Envirosun use AVG valves


Envirosun TS Plus brochure and Owner and Installation manual



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Buy Envirosun solar hot water systems
Envirosun Solar Hot Water Heaters Australia, New Zealand and South Pacific