What is a Star Rating?

An energy efficiency star is a measure of how much energy ‘leaks’ through the skin of a building over the course of a year within a given climate.

A star rating is an expression of how much artificial heating and cooling energy will be required to keep the inside temperature within a standard ‘comfortable range’.

  • 0 stars means the home offers no barrier to the external temperatures.
  • 10 stars means the home requires no additional heating or cooling.

Energy Stars depend on the climate experienced by the home — the amount of energy lost from a 6-star rated home in Brisbane will be different to a home in Canberra.

Compared to other materials in a building, ordinary windows are poor heat insulators and let a lot of radiant heat from the sun into a home. Therefore the selection of windows can have a significant impact on the star rating.

SeeBeyond offers the following list of websites to help you obtain information for your project.

Your Home:
    http://www.yourhome.gov.au
Australian Building Codes Board:
    http://www.abcb.gov.au/
Queensland:
    http://www.dip.qld.gov.au
NSW:
    http://www.basix.nsw.gov.au
Victoria:
    http://www.sustainability.vic.gov.au
ACT:
    http://www.actpla.act.gov.au
Tasmania:
    http://www.dhhs.tas.gov.au/services/channels/abouthousing/
Western Australia:
    http://www1.sedo.energy.wa.gov.au
Northern Territory:
    http://www.nt.gov.au/dpi/
South Australia:
    http://www.planning.sa.gov.au

 

Energy Star Ratings explained