Hot Water

Tips to save energy and money on hot water

  • Keep shower times to 4 minutes or less.
  • Ensure your hot water system is set at 60 degrees Celsius.
  • Install a water efficient showerhead and tap aerators.
  • Wash clothes in cold water
  • Replace your electric or gas system with solar




Heating water is the largest contributor of greenhouse gas emissions from Australian homes and is the second largest segment of energy usage in homes.

In most Australian homes, the main form of heating water is through the use of gas or electricity. More than half of hot water is used for showering, one-third for laundry, and the remaining amounts in the kitchen.

Potentially, there could be a lot of cost savings if homes reduce their hot water usage, swap their hot water system to a renewable source such as solar, or simply install water-efficient showerheads and taps.

Homes should consider their household size and usage patterns so as to install an appropriate size hot water system.

This activity received funding from the Australian Government. The views expressed herein are not necessarily the views of the Commonwealth of Australia, and the Commonwealth does not accept responsibility for any information or advice contained herein.