All ENERGY STAR® certified windows will come with an ENERGY STAR® label. The ENERGY STAR® label will include a climate zone map of Canada and indicate which climate zone the window model is certified for.

Refer to the sample label below, and visit Natural Resources Canada for more information about ENERGY STAR® windows.

An example label of an ENERGY STAR certification label for a vinyl frame triple glaze low-e coating window, with energy performance ratings such as U-Factor, Solar Heat Gain Coefficient, Energy Rating, and Visual Transmittance.

Did you see a building science or energy efficiency term you did not understand? Check out our glossary.