Making your Decision
1. Canada has been divided into four climate zones.
2. The climate zones for which a window is ENERGY STAR qualified will be shown on a label or on its sales literature.
3. Simply choose a product model that is qualified for the climate zone that you live in.
If all of the original windows and doors in an average older home were replaced by ENERGY STAR qualified windows and doors, the household energy consumption would be reduced by about 7%, which would save three quarters of a tonne of greenhouse gas emissions annually. If ENERGY STAR qualified windows and doors were installed in an average new home instead of conventional products, energy consumption would be reduced by about 12%.
Many products will qualify for more than one zone in Canada. The more zones a product qualifies for, the more energy efficient it is.
