Edson hot water has been a major supplier of domestic and commercial high quality hot water systems for over 50 years. There warranties are unparalleled with a 15 year collector and tank warranty. These premium evacuated tube systems utilise the latest in solar hot water technology delivering up to 80% of your hot water needs in Melbourne. They are simply the only choice for people who want to do the most they can to reduce their environmental footprint and insulate themselves from power increases.

How It Works

The Edson Solar Hot Water System uses solar collectors designed to collect heat by absorbing sunlight. The collectors are devices for converting the energy in solar radiation, providing a highly efficient means of heating your water.

The Evacuated Tubes

Glass evacuated tubes are the key component of the Edson Evacuated Tube Heat Pipe solar collectors. Each evacuated tube consists of two glass tubes. The outer tube is made of extremely strong transparent borosilicate glass, that is able to resist impact from hail up to 25mm in diameter. The inner tube is also made of borosilicate glass, but coated with a special selective coating which features excellent solar heat absorption and minimal heat reflection properties. The air is withdrawn (evacuated) from the space between the two glass tubes to form a vacuum, which eliminates conductive and convective heat loss.

The Evacuated Tube Heat Pipe System

Inside the glass evacuated tube described above a copper heat pipe is installed. The copper heat pipe transmits heat to its tip which is plugged into the collector's heat transfer manifold. As water runs through the manifold heat is transferred from the copper heat pipe to the water as shown in the diagram (above). The heat transfer manifold is housed in a highly insulated aluminum housing.

This method of heat transfer is a thousand times more efficient than a solid copper rod. Heat is therefore very efficiently transferred from the glass evacuated tube to the water. Since no water is flowing through the collector tubes and the tubes are hermetically sealed it does not suffer from corrosion problems, as is the case with other types of solar collectors.

Unlike other types of solar collectors, evacuated solar collectors still provide excellent results on cloudy days. This is because the tubes are able to absorb the energy from infrared rays which can pass through clouds. Wind and low temperatures also have a minimal effect on the function of evacuated tubes when compared to flat plate solar collectors. This is due to the insulating properties of the vacuum in each tube.

Why Should You Go Solar?

• It's from the sun and it's free
• Reduce your hot water power bill by up to 70%
• Up to 90% of the system cost can be recovered in rebates and STCs in some areas
• Reduce your Carbon Footprint by up to 3 tonnes per year
• The equivalent of planting 200 trees or taking a small car off the road each year

Small-scale Technology Certificates (STCs)

The purchase and installation of an Edson Solar Hot Water System may entitle you to Small-scale Technology Certificates (STCs) if your system is eligible under the Small-scale Renewable Energy Scheme. STCs are sold and transferred to liable entities (usually electricity retailers) through a market based online system called the REC Registry, or via the ORER managed STC Clearing House.

For more information, visit
climatechange.gov.au
REC Registry

edson Gas

In the edson Gas system, the control is taken away from the Thermostat and put into our Controller. You have the ability to control when the boost comes on (immediately after maximum solar gain), providing a highly efficient means of heating your water. The Smart Controller also has the ability for programming alternate boosts if required.

Outside of efficiency, the biggest plus for this system is that it operates on a half inch gas feed. This means that the installation is a simple replacement of an existing Gas Storage Unit without the need for a gas line upgrade. This is required in many cases for the Instantaneous Unit, thus saving you hundreds of dollars in installation costs.

By cycling the stored water through the Collector, the Tank remains at a temperature above 60°C for 7-8 months of the year – The burner does not come on, reducing gas cost. For the remainder of the year we aim to have a temperature between 30°C and 40°C, giving a top-up boost at half the cost. This brings operating efficiency up to 80%.

Domestic Usage

edson Electric

The edson Electric Boosted Hot Water System is supplied with either a Vitreous Enamel or Stainless Steel Electric Boosted Tank that will operate the same as a standard non-solar electric hot water system. It is connected to off-peak electricity or put onto a timer to take it off automatic boosting. The thermostat will read the water temperature once a day to heat your water to 60°C to complement the energy harvested from the sun.

Cycling the stored water through our collector, the tank remains at a temperature above 60°C for 7-8 months of the year – reducing the requirement for the electric element to come on thus reducing electricity costs. For the remainder of the year we aim to have a temperature between 30°C and 40°C giving a top-up boost at half the cost keeping operating efficiency at up to 80%.

Domestic Usage

edson Instantaneous Gas

The edson Instantaneous Gas system is supplied with either a S20 or S26 Solar Rated Instantaneous Booster Unit and either a Vitreous Enamel or Stainless Steel Storage Tank.

By cycling the stored water through our collector the Storage Tank sits at a temperature above 60°C for 7-8 months of the year – reducing the requirement for the burner to come on thus reducing gas costs. For the remainder of the year the temperature sits between 30°C and 40°C giving a top-up boost at half the cost. Instead of feeding the Instantaneous Unit with cold water, the inlet is run from the hot water outlet of our Storage Tank keeping operating efficiency up to 80%.

With the Gas Instantaneous solution you only heat water as you use it. An extremely efficient way of producing hot water. These systems operate just as your normal gas hot water system would, without the energy cost.

Domestic Usage

Solar Heat Pump

The edson Solar Heat Pump operates like a refrigerator in reverse. It contains a fan that forces air through an evaporator that contains a refrigerant. The heat in the air passes through the evaporator and is absorbed by a natural refrigerant, CO2 (R744), which is ozone friendly and does not contribute to global warming. The warm gaseous refrigerant is circulated in the system via a compressor. As it passes through the compressor, its pressure rises and causes the temperature to increase. The hot refrigerant is finally transferred to the Edson Storage Tank via the condenser.

By cycling the stored water through our collectors the Storage Tank sits at a temperature above 60°C for 7-8 months of the year. For the remainder of the year, the temperature sits between 30°C and 40°C keeping operating efficiency up to 80%.

Domestic Usage

Benefits of Edson Solar Hot Water Systems

• Evacuated Solar Tubes provide superior daily heat output due to positive sun tracking.
• Toughened 2mm glass evacuated tubes.
• 12 Sputted Layer, Tri-chlor Coating allows up to 97% of the heat from the sun to be retained.
• Maximum surface area and increased water turbulence between the Heat Pipe and Manifold for superior efficiency in the Heat Exchanger.
• Tested to Level 2 Australian Standards frost protection (minus –15°C).
• Fibremesh Insulated Collector Manifold, Sealed Evacuated Tubes, Tri-chlor Absorber Coating and Freeze Protected Heat Pipes allow reliable solar gain all year round. No glycol or chemicals required!
• Anodized Aluminium Collector and Frame provides both strength and long term corrosion resistance.
• Super quiet, low energy 3 speed Solar Circulation Pump.
• Replacing individual Tubes is low cost maintenance as opposed to replacing a complete Solar Flat Panel.
• Choice of 4 boost options.
• Every Edson Solar System is supplied complete with a Plumbers Installation Kit.
• All valves and insulation including the Tempering Valve are included.
• All components carry a 5 year warranty.
• Inhouse engineering, technical, installation and service support.