Windows, doors and skylights

ENERGY STAR high efficiency, haute efficacité symbol
ENERGY STAR 2019 Award

Buy ENERGY STAR® to save you money!

Windows, doors and skylights

Windows, doors and skylights can be a significant source of energy loss in your home – up to 35%. In Canada’s climate, this means higher energy bills for you.

But choosing highly efficient models can help. Replacing all of your windows with ENERGY STAR certified models can save you an average of 8% on your energy bill.  And ENERGY STAR Most Efficient models are the “best of the best” – up to 40% more efficient than standard windows. Buying ENERGY STAR certified doors and skylights will complement your window purchase and help you save even more energy.

Look for the ENERGY STAR symbol


ENERGY STAR is the mark of high-efficiency products in Canada.

The familiar symbol makes it easy to identify the best energy performers on the market.

ENERGY STAR certified products meet strict technical specifications for energy performance – tested and certified. Explore the factors affecting energy efficiency by reading the technology primer  for windows, doors and skylights.

And don’t forget about the installation

A poorly installed window, door or skylight may cause condensation, cold drafts or even allow water to leak into your home. And the damage water causes is usually invisible until it is very costly to fix.

If possible, choose a company that is in the Window Wise certification program. This quality assurance program trains installers to install windows and doors correctly.

Before you go shopping:

Resources for fenestration manufacturers and dealers:


How to choose energy efficient windows


How to choose energy efficient windows

VISUAL: Mom looks unhappy next to an old window and is holding a warm drink because she’s cold.

Is your home drafty?

VISUAL: Dad is struggling to open an old window.

Are your windows hard to open or close?

VISUAL: A child is looking through a window with condensation build-up between the panes.

Do they have condensation buildup?

VISUAL: Mom is shopping at a store for new windows. Camera moves to the ENERGY STAR Windows Display.

Sounds like it's time for new ENERGY STAR certified windows.

VISUAL: Text appears on the ENERGY STAR Windows Display: “4 EASY STEPS”. Camera pulls back through the window of the store so that you see the store from the outside. Camera continues to pull back as you see Mom driving away from the store.

Here are 4 easy steps to select energy efficient windows to make your home more comfortable.

VISUAL: Camera follows Mom’s car as she is driving home. A panel slides in showing “Step 1”.

STEP ONE: Look for the ENERGY STAR symbol

VISUAL: Mom continues driving and arrives home (view from the backyard). A raccoon walks up to the camera and gets startled. The ENERGY STAR Most Efficient logo appears. Facts from the script appear as the narrator says them (“SAVE 8% ON YOUR ENERGY BILLS”; “40% MORE EFFICIENT”).

ENERGY STAR certified windows can save you an average of 8% on your energy bills.

Better yet, windows with the "ENERGY STAR Most Efficient" designation are up to 40% more efficient than standard windows.

VISUAL: A diagram of an ENERGY STAR window appears. Features about the window appear as labels around the diagram (“low-e glass coatings”; “insulated frames and sashes”; “inert gases between the panes”).

ENERGY STAR certified windows are better insulated, through things like:

  • low-e glass coatings;
  • insulated frames and sashes; and
  • inert gases between the panes

VISUAL: The Panel for “Step 2” appears.

STEP TWO: Know your climate zone

VISUAL: A map of Canada appears. The 3 ENERGY STAR zones are highlighted in different colors as a legend appears showing the colours and corresponding zone names: “ZONE 1”; “ZONE 2”; “ZONE 3”.

There are three Canadian climate zones: 1, 2 and 3. Choose a window rated for the zone you live in.

VISUAL: An animated ENERGY STAR label appears showing the ENERGY STAR zone and performance ratings changing for an increasingly efficient window.

For even more efficient windows, choose a window certified for a higher zone than your own.

VISUAL: Mom is at her computer looking up her climate zone at

You can look up your climate zone at

VISUAL: The panel for “Step 3” appears.

STEP THREE: Consult with a supplier about getting the right windows for your home

VISUAL: The back of the house appears. The screen splits to show the animated ENERGY STAR label with the ENERGY STAR zone and performance ratings changing for an increasingly efficient window. The label’s box for Solar Heat Gain Coefficient highlights.

For example, do you have an older home? You'll likely want windows with medium or high solar gain to transmit the sun's heat in cold months.

VISUAL: Wind gusts animate as trees sway in the wind around the house. A flock of geese fly in the sky. Text from the script appears (“COMPRESSION SEAL”; “CASEMENT & AWNING WINDOWS”).

Is your home exposed to wind gusts? You'll likely need a compression seal, found in casement and awning type windows.

VISUAL: The panel for “Step 4” appears.

STEP FOUR: Hire a professional

VISUAL: A Window Installer’s van is driving on a road. The van has an ENERGY STAR logo that says, “WE SELL ENERGY STAR”. The van passes a moose eating near the road.

Trained installers ensure your windows will perform their best.

VISUAL: Mom is at her computer searching for window installers. Text from the script appears (“REPUTABLE INSTALLERS”; “3 QUOTES”).

Do your research to find reputable installers then get 3 quotes to install your ENERGY STAR certified windows.

VISUAL: The back of the house appears. The camera pans up to the sky where the text for the 4 steps appears. A red cardinal flies and lands on the text and then flies away.

Follow these 4 simple steps to select the perfect ENERGY STAR certified window that will save energy, save money and protect the planet.

VISUAL: The NRCan ENERGY STAR Vanity URL appears ( Copyright screen and then Canada Wordmark screens on white background.

For more information, visit

The ENERGY STAR name and symbol are trademarks registered in Canada by the United States Environmental Protection Agency and are administered and promoted by Natural Resources Canada.