Heating and cooling

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Improve the comfort of your home with reverse cycle air-conditioners. The most energy-efficient combined heating/cooling system you can buy.

What can I do?

Heating and cooling use the largest amount of energy in your home, accounting for around 40% of household use.

Reverse-cycle air conditioning

This is an electrical climate-control system which provides heat as well as refrigerated cooling. Reverse-cycle air conditioning is 300–600% efficient, which means that it can take one unit of electrical energy and turn it into 3 to 6 times as much heating or cooling energy.

Maximise energy savings by:

  • Choosing the right sized appliance for your needs.
  • Setting your thermostat correctly. Each degree of extra heating/cooling increases consumption by 5-10%. Set the thermostat to 18-20°C in winter and 25-27°C in summer.
  • Sealing around doors/windows with weather strips (flueless/open-flue gas heaters still require ventilation).  
  • Installing roof and wall insulation.
  • Installing thick curtains.
  • Double glazing should be assessed for cost vs energy savings.


Fans improve comfort levels so you feel about 3°C cooler. They are an efficient choice and cheap to run at only 2 cents per hour.

Get started

Need help?

Please contact our Sustainability Engagement Officer via email or phone 9424 0172.