Solahart has put innovation at the heart of its technologies since it first began business in 1953. Founded in Perth, the company brought out Australia’s first solar hot water systems. Since then, Solahart has developed a worldwide reputation for manufacturing some of the most efficient solar hot water heaters.

Solahart solar systems have been designed to make the most of Australia’s weather conditions, harnessing the thermal energy of the harsh Australian sun. By channelling this resource, Solahart hot water systems are extremely energy efficient. This means that they are far cheaper to run than standard gas or electric systems, while also being friendlier to the environment. From roof-mounted tank systems to ground split systems, Solahart’s range is diverse enough to be integrated into almost any home.

Solahart solar hot water systems including Solahart Thermosiphon are available through you local, authorised agents at Australian Hot Water

Being Australian, Solahart solar hot water systems are made to withstand the harshest heat and keep running year after year. Solahart solar hot water heater models come with either a 5 or 10 year warranty on collectors & storage cylinders.

Australian Hot Water is fully certified to supply, install, maintain and repair all Solahart solar hot water products. When you install a solar system in your home, it is important that you ensure it is configured to maximise available light. This will be different for every property and it is important the project is carried out by expert technicians.

Solahart Thermosiphon

All Solahart systems, where the tank is roof-mounted, use the Thermosiphon principle to collect heat from the sun and transfer it to your hot water.

The Thermosiphon principle is based on two naturally occurring phenomena:

• Dark objects absorb heat
• Hot water rises

All Solahart collector panels are coated with a dark, heat-absorbent surface. This coating absorbs the suns rays and heats the cold fluid in the collector panel. As the fluid heats, it rises to the top of the collector panel and into the tank where it displaces cooler fluid which flows in to the bottom of the collector panel where the process is repeated.

The greater the temperature difference between the fluid in the collector panels and the water in the tank the faster the flow between them.

In open circuit systems the fluid in the collector panel is water while in closed circuit systems a special fluid called, Hartgard, is used. When heated in the collector panel, it is circulated in a jacket around the tank to transfer the heat to the water inside.

In this way Solahart systems constantly soak up the sun’s energy to ensure you have hot water, on tap, everyday.

Solahart Split System

In the split system Solahart collector panels are mounted on a North facing roof, whilst the storage tank is mounted at ground level out of sight.

Solahart’s Streamline is designed to give you, the owner, the maximum flexibility of installation locations. The electric boosted tank can even be installed inside your home. This minimises the visual impact of going solar, while maximising the potential savings from the sun.

With a Streamline the water is circulated from the tank and through the collector panels by an electric pump called a ‘circulator’.

Cooler water is pumped in a continuous cycle from the bottom of the tank and circulated through the collector panels where it absorbs the heat extracted from the sun before being returned to the top of the tank.

The circulator is regulated by a control unit on the water heater, when the controller senses an 8°C differential in temperature between the top of the collector panels and the bottom of the tank, the circulator is activated until the temperature differential falls to 4°C.

Solahart Synergy Heat Pumps

Solahart Synergy Heat pumps use amazingly efficient heat pump technology to extract the heat from the surrounding air.

The Synergy operates in much the same way as a refrigerator but in reverse. Ambient air is used to warm the CFC free refrigerant, which converts into a gas. This gas is compressed which generates heat and the heat is transferred to the water. Once the heat has been extracted the refrigerant is expanded back to a liquid and the cycle repeats.

This process is 225% more efficient than conventional electric water heaters so it uses 1/3 of the energy to provide all a family’s hot water needs.

A common characteristic of heat pump water heaters is the tendency for the evaporator coil to ‘ice-up’ at low temperatures, thereby wasting energy as the unit goes through its ‘defrost’ mode.

The advanced design of the Synergy overcomes this problem by the use of an inbuilt booster element. If at ambient temperatures below 10°C the Synergy senses any ice build up on the evaporator coil, it will cut the heat pump operation and switch over to the booster element.

The booster element actually consumes less power heating the water at these low temperatures, than a conventional heat pump in defrost mode. This means your new Solahart Synergy is saving you even more on your energy bills.

Solahart Downloads (PDF)

Not only can Australian Hot Water install your Solahart solar water heater, we are also available 24/7 for same-day repairs and service. Contact us to find out more.

More information on Solahart Hot Water Systems

For more information on Solar hot water systems, visit the Solarhart website.

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