Solar hot water systems come in 2 different varieties - Split Systems and Roof Systems
Flat Panel Split Systems
A split system, or “active system”, has a holding tank sitting on the ground, usually replacing your old electric system in the same spot it is/was located. A circulating pump forces the flow of cold water from the tank up through the panel(s) on your roof, where the water is then heated up before returning to the holding tank.
The use of a circulating pump does result in some running costs, but it is still much cheaper than paying for an electric system to run. Active systems are usually significantly more efficient than passive systems (roof systems) but are more complex, more expensive, more difficult to install and rely on electricity to run the pump and gas/electricity for the booster.
Evacuated Tube Split Systems
The Apricus solar hot water system is a major industry leader as a result of our continuous research and development. Utilising evacuated tube technology, the Apricus system outperforms flat-plate solar and carries the longest warranties available in the market. Our complete system package, includes a collector, pump, controller and storage tank. Each component is tried and tested to give our consumers the comfort of knowing their system is not only reliable but an investment that will endure for generations.
Roof Systems
A roof system, or “passive system”, combines the holding tank with the solar panel(s) and puts everything on the roof on the same chassis. This will add a lot of weight to your roof, with most systems weighing more than 400kg.
Typically these systems will function by natural convection (thermosiphon) to transfer the heat energy from the collector to the tank. Roof systems are generally a bit cheaper than split systems, mainly due to less pipe run, the lack of a circulating pump and easier installation
To boost or not to boost?
Solar hot water systems come with the option of a gas or electric booster. The booster ensures you’re provided with just as much hot water as with a conventional system, even on cloudy days. Booster options include Timed, Manual & Automatic.
Rebates
Government rebates may apply to solar hot water if changing over from an existing electric system. This rebate is paid out to you after installation and is basically a reward for getting rid of your electric storage unit. Conditions do apply to these rebates so please check with your Air Solar expert for further information.
RECs
A REC, or “Renewable Energy Certificate”, is equivalent to one megawatt hour of electricity generation. The value of a REC is dependent on market conditions and can change from day to day. RECs are usually used as a point of sale discount, in order for you to outlay less money upfront.
Benefits of Solar Hot Water (SHW)
According to Government studies you can save up to $700/year on your power bills by going solar. This is because hot water heating, on average, makes up for approximately 35% of your energy bills and SHW can save up to 75% of that. Confusing stuff but give us a call and we’ll explain it all! Also, if you are thinking of going with solar power (PhotoVoltaic) at some stage it is definitely an advantage to go SHW first as it’s a much cheaper way of cutting down your bill.
Lifespan and Warranty
Air Solar Australia sells several solar hot water brands. These all come with a 5 year warranty, which is standard for hot water systems in Australia. However, typically a SHW system will last 15-20 years, which is roughly double that of an electric system.
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