Solar Pumping Solutions
solar hot water
Advanced solar hot water
At Solar Pumping Solutions we supply the latest technology in solar hot water. Hills Esteem Solar Hot Water Systems are Clean and Green using highly efficient evacuated tube technology saving you up to 90% on water heating costs. Evacuated tubes have passed the AS/NZ 2712:2007 standards for both hail and freeze resistance to -15 degrees C without the need for a heat exchanger or glycol making them extremely effective in cooler climates. The durable stainless steel tanks offer natural gas, LPG or electric boosters to ensure hot water is always available.
Please see a selection of available systems at the links to your left, or contact us for custom jobs and quotes.
Why Hills Evacuated Tube Solar Hot Water Systems are the best!
- Evacuated tubes will save you up to 90% on your annual water heating costs
- Evacuated tubes are tested to -15 degrees C. you won't have any problems with freezing in winter. No anti-freeze chemicals like Glycol are used or needed.
- They are also tesed hail resistant up to 25mm.
- If you break one or two tubes, unlike a flat plate system, ours will continue to operate and you can easily and economically replace any broken tubes.
- If you don't have the ideal Northerly aspect on your roof, because of its cylindrical design the collector can be mounted in other positions and still function.
- You won't have to re-inforce your roof as the tank sits on the ground
- Because the system is modular it is simple to install without the need for cranes or heavy lifting.
- Hills use marine grade, stainless steel tanks - they provide a natural oxide barrier to rust and eliminate the need for a sacrificial anode which saves the cost of replacement every 5 years.
- You can use gas, electricity or waste heat from a wood stove to provide back up heating.
- Eligible for generous government rebates up to $3800.
- Some flat plate systems may offer more REC's however this has been calculated on 'area' covered by extremely large flat panels. As our systems are more efficient they cover less area.
- Hills provide a 10 year warranty on all major components as well as the backing of a known and trusted Australian company.
State and Federal government rebates.
$1000 Federal Government Rebate available for systems installed on, or after July 18 2007
Click here for more information
New NSW State Government solar hot water rebate
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How does a Hills Solar water heater work?
Most solar water heaters use flat plate technology which has been around for years. Hills Esteem Solar Hot Water Systems use state-of-the-art technology based on evacuated glass tubes and highly efficient heat transfer techniques.
Flat plate solar water heaters are only at their maximum efficiency in the middle of the day. A great deal of the sun’s energy is simply reflected off the flat glass panels, especially in the morning and afternoon. Because the evacuated tubes are cylindrical, they are always facing the sun and can absorb more of the Sun’s energy. In fact, an evacuated tube solar collector can absorb up to 40% more of the sun's energy that a comparably sized flat plate system.
Energy Output Comparison Graph
(Cosine adjusted) (Tm-Ta=40K G=800W/m2)
The tubes consist of 2 layers of toughened glass with a vacuum between these 2 layers. This evacuated layer in the tubes acts much like a thermos flask retaining about 97% of the energy absorbed from the Sun. This helps increase the efficiency of the collector and also protects it from the effects of cold air (the water in flat plate collectors can freeze in very cold areas).
As a result, an evacuated tube solar collector is the perfect system for very cold areas and the Hills Evacuated Tubes have passed the AS/NZS 2712:2007 Standard Freeze Test to -15 degrees C.
The sun’s energy that is absorbed by the tubes is then transferred to your water via special heat pipes located inside each tube. A small amount of liquid is turned to gas by the sun; this gas rises to the tips of the pipes which are inserted into a heat transfer manifold located on your roof. Water is then pumped through this manifold absorbing the heat and stored in a water storage tank located below.
The result is an incredibly efficient system to harness the heat of the sun even in extremely cold areas. Because the system is so efficient it does not require full sun and can work in cloudy or even rainy days.
Why would you want to install anything else?