Window Energy Rating Scheme

The Window Energy Rating Scheme (WERS) is managed by the Australian Window Association which HDG are members of.

It provides a system for rating and comparing the energy performance of windows and doors against one another, in a similar fashion to the rating system commonly used for white goods.

To participate in WERS, window fabricators must obtain energy ratings for their products from a rating organisation accredited by the Australian Fenestration Rating Council (AFRC) and rated windows must meet all relevant standards.

In order to determine window performance data, WERS uses a window’s U Value and Solar Heat Gain coefficient. In simple terms, the U Value is a measure of the rate of heat transfer through a window. The lower the U Value, the better level of insulation the window provides.

The Solar Heat Gain Coefficient is a measure of how much solar radiation passes through the window.