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Green Energy


Close Coupled systems

A close coupled system is where the storage tank and the solar collectors are coupled together and installed on the roof. Using thermo-syphoning (i.e. hot water rises) to circulate water through the collectors and into the storage tank, means there are no moving parts and no need for a pump.


  • 200 or 330 litre capacity storage
  • Available with electric boost or continuous flow gas boost
  • Enduro collectors use aluminium fin solar absorber to maximise efficiency
  • Available with a frost protection kit
  • Collectors manufactured in Australia
  • A sacrificial anode is provided in the tank for added protection
  • Warranty is 5 years on the tanks and 7 years on the collectors (Rinnai)

Our hot water service division covers all the leading brands including Rinnai, Solahart, Rheem and more so rest assured your purchase will be kept in pristine condition.

From the largest families to those with lesser needs GEWA has the options for you.

















Want a choice with unbiased Solar Hot Water advice? Call us TODAY.


Why Green Energy

With years of experience and hundreds of installations across Western Australia, GEWA offers you piece of mind when it comes to selecting the right brand and product for your home.

Tank Types

GEWA offer both stainless steel and vitreous enamel lined tanks, in closed coupled or split system format. Whilst in most cases both tanks can be used in residential applications it is important for our staff to assess which is suitable for you.

Collector Types

Flat plate collectors or gas evacuated tubes is a common question. Are the tried and tested flat plate collectors as efficient as the highly marketed gas evacuated tubes and what is most suitable for our climate? With the ability to supply both we will provide you with a non-biased approach to selecting the most efficient type for your budget.

Booster Option

The back up to the solar hot water system can be either electric or gas, not all options are viable, whether you have the infrastructure in place or are specifically looking to make use your solar power system, we can advise you of the benefits and most appropriate ways to use either back up for those months when the solar radiation is reduced.