Energy Efficiency



Window Energy Rating


The Australasian Window Council Inc. (AWC) has rated a range of typical windows for their energy efficiency and performance in thermal insulation, noise and comfort. Look for the WERS rating sticker or ask about the rating of the windows you are installing.


Energy Rating for windows is here to stay. The federal government’s Australian Greenhouse Office is helping to underwrite WERS as part of its commitment to improving energy efficiency and reducing greenhouse emissions from the built environment.


Home resale value, comfort and amenity is improved by the use of high-performance windows. Gone are the days when windows were just a commodity to be sold on price alone. In addition, WERS will be referenced by the Building Code of Australia.


For more information:



5 Star Energy Rating


From July 2004, all new homes will need to comply with 5-star energy regulations as prescribed in the Building Code of Australia (BCA). This means that your new home must be:

  1. 5-star energy rated for the building fabric; or
  2. 4-star energy rated for the building fabric with water saving measures and a solar hot water system; or
  3. 4-star energy rated for the building fabric with water saving measures and a rain water tank.

Windows form an important part of your building, and as such are part of the Energy rating of your building. The Energy Rating does not apply to renovations. Please check the legislation before you proceed.