Savings Benchmark: How the savings have been calculated

Calculations are based on average usage by three occupants in a 226sqm, single storey, four bedroom home. The house is assumed to be located in Victoria, Australia (a temperate climate), with a concrete floor slab, brick walls and terracotta tiles on the roof. A small garden has also been assumed.

The savings from using sustainable products in an Established Home are compared against a typical home (as above) from the year 2000 containing typical appliances/fittings from this time. At this time the typical energy rating of homes was around 2.5 stars. The specified "established home" produces 20 tonnes of carbon annually in its base state.

The savings from using sustainable products in a New Home are compared against a typical new house with a 6 star energy rating (the current minimum in Victoria). It is assumed to contain typical appliances and materials of the current time. The specified "new home" produces 11 tonnes of carbon annually in its base state.

When upgrading an established house with sustainable products the "savings" from doing this will be greater that for the new house. This is because the new house will already be much more efficient. However, the overall cost of running an established house will generally be much higher than for a new house.

This tool is a guide only; actual savings will vary depending on the size of your home and usage.

For detailed information on how the savings have been calculated and for more details on the homes please click on the "INFO" button on the right hand side of the calculator to download the full pdf document.