Why choose a Hills ESTEEM™ Evacuated Tube Solar Hot Water System?
Evacuated tube technology has been used in Europe for many years and is more efficient in cooler climates than standard flat plate technology. At Hills we have undertaken research to choose a quality system that will perform best in all conditions especially in winter when thermal energy is at its lowest therefore giving you the best performance possible all year.
How does an Evacuated Solar Tube Work?
The advanced design incorporates tubes that consist of 2 layers of borosilicate glass with a vacuum layer between them. The vacuum acts like a thermos flask, retaining up to 97% of the thermal energy, resulting in an increased efficiency. The Sun's thermal energy is then transferred to the manifold via the heat pipe located in each tube.
The small amount of evaporative liquid in each tube is super heated by the sun's energy and forms into a gas. The gas rises to the top of each pipe. Heat transfer then occurs between the pipe and water passing through the manifold. The water is then transferred to the tank.
The cylindrical design of the tubes ensures effective collection of the sun's thermal energy throughout the day.
Will my Hills ESTEEM™ Solar System work if the sun doesn’t shine?
Even on cloudy and rainy days you may still achieve some solar gain. The Hills Solar system is available with an electric or gas booster to assist heating the water on poor solar gain days.
Are the Hills ESTEEM™ Solar Systems eligible for Government rebates?
Providing you meet the Federal Government's criteria all Hills ESTEEM™ Solar Systems are eligible for RECs (Renewable Energy Certificates). There is also a $1,000.00 Federal Government rebate. For more information visit http://www.orer.gov.au/ (Office of the Renewable Energy Regulator) Some States and local councils also offer incentives on installation of solar hot water systems.
What are RECs?
RECs are a form of currency created by the Federal Government under the Renewable
Energy (Electricity) Act 2000 and are used to demonstrate compliance with the requirements of the Government’s Mandatory Renewable Energy Target (MRET) scheme. The Hills ESTEEM™ Solar System qualifies for these generous Government Rebates (conditions apply). There are 4 Australian zones, which will determine the number of RECs for each system. To find the RECs zone for your postcode click here.
Which is the best collector orientation?
The ideal location for collectors is facing due North, however 45 degrees North West or North East is acceptable with minimal effect due to the cylindrical design.
Why do Hills use stainless steel storage tanks?
Stainless steel tanks have a natural oxide barrier to corrosion, therefore eliminating the requirements of a sacrificial anode, which saves the cost of replacing approx every 5 years. Stainless steel tanks also have a longer life than standard Vitreous enameled tanks and attract a ten year warranty.
Will my Hills ESTEEM™ Solar system freeze?
Hills Solar Evacuated Tubes are frost tolerant and have passed the AS/NZS 2712 :2007 Standards for both, Hail & Freeze Resistance. The Hills Solar Hot Water Systems have passed the Freeze Test to –15° C without the need for a heat exchanger or Glycol.
Can I fit a Hills ESTEEM™ Solar system to my existing hot water system?
In most cases a Hills ESTEEM™ Solar system can be retro-fitted to an existing hot water tank. Please consult your local dealer for more information.
Where can I buy a Hills ESTEEM™ Solar Hot Water system?
Please click here to find your nearest dealer.