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Windows (Total: )
Windows and doors are eligible for ENERGY STAR® based on their U-factor that measures their overall heat loss, or, their Energy Rating (ER) that combines their passive solar heat gain (SHGC) through the glass with their overall heat loss and air leakage. Models must have a U-factor of 1.22 W/m2 or lower, or, an ER of 34 or higher.
To find models that are the most efficient, select the ENERGY STAR Most Efficient checkbox in the “Energy Efficiency Criteria” section below. Models must have a U-factor of 1.05 W/m2 or lower, or, an ER of 40 or higher.
Caution is advised when selecting windows and sliding glass doors with passive solar heat gain (SHGC) values above 0.45 that will face south or west, especially if there is more glass area than exterior wall area (high window to wall ratio), as this could cause uncomfortably warm room temperatures and higher cooling costs.
Seeking advice from a qualified Energy Advisor can help ensure that you choose the right windows and doors to lower your energy bills and have optimal thermal comfort in all seasons.
Products contained on this list may be different from the Greener Homes program list.
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Brand Name
| Select | Model Number | Brand Name | ENERGY STAR Most Efficient 2020 - 2025 | U-factor (W/m² - K) | U-factor (Btu/h/ft² - °F) | Solar Heat Gain (SHGC) | Energy Rating | Style | Frame Material | Layers of Glazing | NRCan Reference | Energy Efficiency Verification Reference |
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Regulated products: The data provided are reported to NRCan by dealers and their certification bodies. NRCan makes no representations or warranties regarding the accuracy of the data. The regulatory reporting requirement is fulfilled upon submission of an energy efficiency report that complies with the requirements of Section 5 of the Energy Efficiency Act and not upon posting on this site.
The ENERGY STAR name and symbol are administered and promoted in Canada by Natural Resources Canada and are registered in Canada by the United States Environmental Protection Agency.