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Solahart Hot Water Systems

The Original Australian Solar Hot Water Systems

Solahart is a leading manufacturer of solar hot water systems in Australia, providing solar water heating to over a million households around the world.

Solahart’s solar hot water history goes back to 1953

Solahart’s beginnings date back to 1901 in Perth, when two entrepreneurs formed SW Hart and Co Plumbers and Ironworks to manufacture tanks, troughs and sinks for the pioneering community. In 1953 the company developed a method to harness the sun’s natural energy as a way to heat water, long before human induced global warming was even heard of. Thus Solahart was born and the company began manufacturing solar water heaters to suit the West Australian climate.

So is Solahart the best solar hot water system for your situation?

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By the mid 60’s Solahart started developing models to suit all Australian climates and was providing solar hot water to households and businesses all around the country through our network of dealersIn 1978 the Solahart 300L/80GE was introduced, receiving wide international recognition leading to the development of an international dealer network to provide Solahart energy saving water heaters to the world. Today Solahart has manufactured over a million solar hot water systems installed in over 80 countries on every continent around the world, and has over 100 Dealers around Australia. Solahart Segment on Kerr-Anne: Solar Hot Water Options Explained

Solahart produces a wide range of models

Today, customers can choose from 3 styles of Solahart solar hot water systems… 


Thermosiphon. This is the ‘traditional’ style solar hot water system. The sun’s heat is absorbed by the dark panels, and water or a transfer liquid carries the heat upwards to the storage tank.

With this system design, no pumps are required. The design is as simple as it can be.


Split system. Many customers do not prefer the aesthetics of a large tank visible on their roof.

Many roofs are not designed for, or are simply unable to take the weight of a thermosiphon system, which can weigh upwards of 500kg.

The split system puts compact. less-obtrusive panels on the roof, and locates the storage tank on the ground. 


Heat Pump. There are many circumstances where an on-the-roof solar hot water system is not ideal.

  • the roof does not face north
  • shading is a problem
  • the customer would prefer nothing on the roof
  • heritage regulations prevent placing a system on a roof

In these circumstances, a heat pump solar hot water system is the answer. It is usually placed on the ground, and can be located in any convenient location- shade is not an issue. 

Reduce your carbon footprint, and reduce your energy bills

We all know that energy consumption has a huge and serious effect on the environment. The energy we use every day emits harmful greenhouse gases which contribute to climate change.

Water heating is one of the biggest contributors to household greenhouse gas emissions, accounting for around 25% of the average homes carbon footprint.

With a Solahart solar hot water heater which uses the sun’s natural energy you could save up to 50-90%* of your water heating energy consumption, reducing greenhouse gas emissions by 2 – 3.6 tonnes every year, which is the equivalent of taking a 4 cylinder car off the road.

With hot water free from the sun, you’ll reduce your impact on climate change and make a positive step for future generations.

*Savings based on Government approved TRNSYS modelling.

Solahart Solar Hot Water Systems: The Frequently Asked Questions (FAQ’s)

What are the environmental benefits of a Solahart solar water heater?

Water heating accounts for around 25% of the average household’s energy usage. Getting your hot water free from the sun not only saves energy, it also saves the greenhouse gas emissions that would have been produced in the generation of that energy. By replacing an electric storage water heater with a Solahart you can reduce greenhouse gas emissions by up to 3 and 3.4 tonnes a year*, the equivalent of taking a small car off the road. In fact solar water heaters are so good for the environment that STC’s (formerly Renewable Energy Certificates) and some government incentives exist to make it easier to get into solar hot water.

What are STC’s (formerly Renewable Energy Certificates)?

Each STC represents the equivalent of one megawatt hour of electricity generation from an accredited renewable energy source. For solar water heaters each STC represents the displacement by solar energy of one megawatt hour of electricity generation from a non-renewable energy source.

The installation of a solar or heat pump water heater in your property may be eligible for the creation of STC’s. The financial benefit from assigning your right to create STC’s for your solar or heat pump water heater installation can be used to reduce the purchase price of your new Solahart.

The number of STC’s which may be created varies with the model of solar or heat pump water heater and the region in which the unit is installed. The value of an STC is not fixed and varies from ‘time to time’. Save energy with solar hot water AND by reducing hot water use!

What Government rebates are available for solar hot water?

Some state governments in Australia offer rebates to encourage the use of solar water heating. Each rebate has differing eligibility requirements.

How long does a Solarhart Solar hot water system take to pay for itself?

Financial payback will vary depending on your circumstances, but with the available incentives plus the ongoing energy savings you can begin to recoup your additional investment straight away when you remain connected to the same fuel tariff. After you recover your initial investment, the savings are yours to spend on yourself and your family, year after year.

Does a Solahart take long to install?

If your current hot water system breaks down Solahart can have you back in hot water within 24 hours, in most instances, with a temporary system while you wait for your installation, to take away the inconvenience of cold showers.

Why do solar water heaters have boosters?

All solar water heaters include gas or electric boosters to ensure you have hot water even during the colder, darker days of winter and on those rainy days we have from time to time. By selecting the right Solahart model for your area and your family’s hot water usage patterns, you can ensure you minimise the need to use the booster.

Which Solahart solar hot water heater is right for us?

The best Solahart unit for your needs will depend on the following key factors:

The amount of available sun
Is the area prone to frost?
The water chemistry in your area
How many people in the home and their typical hot water usage

To choose the best water heater for your family, call your local Solahart expert who will help you pick the right unit for your current and future circumstances.

Is there an alternative to putting the tank on the roof?

Solahart’s revolutionary range of Streamline Split System solar water heaters allows you to enjoy all the benefits of Solahart’s advanced solar technology – without the tank on the roof.

The Solahart Streamline system locates the low profile collectors on your roof, with the tank installed at ground level. Alternatively you can choose a Solahart Heat Pump which uses heat pump technology to extract heat from the surrounding air, without solar collectors at all.

What if I don’t have the money now?

Solahart has a range of payment plans and interest free options available and in some cases without the need for a deposit to approved customers.