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Comparative Running Costs
Data supplied by Sustainable Energy Authority

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The actual running costs of a system will depend on a range of variables. These include the size of your heater, operating temperature, hours of operation and the energy efficiency and size of your home.

  • Figures based on: NatHERS thermal simulation program for a typical new home with R2.5 ceiling insulation and R1.0 wall insulation in Melbourne.
  • 24 hours heating to 18C for in-slab heating; 8 hours heating to 21C for all others.
  • Tariffs current at April 200 GD 13.0 c/kWh, Y6 4.21 c/kWh, natural gas 0.96 c/MJ, LPG 70.0 c/lt, wood $175/tonne. Supply charges not included.
  • Costs for reverse cycle air conditioners based on average GD electricity tariff. Selected retailers offer cheaper tariffs to customers using efficient reverse cycle air conditioning systems.
  • For an existing home, increase space heating costs by 25%, central heating costs by 45%.
  • For an energy smart home, reduce costs by 30%.
  • For every 1C increase in operating temperature, increase costs by 15%; for 24-hour heating, double these costs (except in-slab).

 

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