CLERA WINDOWS + DOORS · VINYL WINDOWS GUIDE

Are Vinyl Windows Energy Efficient?

Yes, vinyl windows are among the most energy-efficient window options available to Canadian homeowners. The PVC frame material is a natural thermal insulator, meaning it does not transfer heat or cold the way aluminum or steel frames do. It keeps heat inside during winter and blocks it out during summer, helping lower your energy bills year-round.

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What Makes a Vinyl Window Energy Efficient?

Number of glass panes
Double or triple-pane glass significantly reduces heat transfer.
Gas fills
Argon and krypton gas fills act as an extra barrier, heavily improving the window's overall insulation.
Low-E coatings
An invisible metallic coating is applied to the glass, which helps to reflect infrared heat without blocking visible daylight.
Frame design
The multi-chamber design inside the PVC frame traps air and helps to reduce thermal bridging.

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What to Look For

Look for windows that carry the ENERGY STAR® Canada certification, which confirms the product meets performance thresholds for Canadian climate zones. There are four climate zones across Canada so make sure the windows you select are rated for your specific zone.

Why Clera? Clera offers ENERGY STAR® certified vinyl windows with triple-pane glass options and Low-E coatings engineered for Canada's coldest climate zones.

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