Warm up to life’s best moments

Choose ENERGY STAR® certified windows and patio doors to save energy and enjoy greater comfort.

Greater savings, efficiency and comfort!

  • You can save up to 10% on your heating costs if you replace all your windows and patio doors with ENERGY STAR® certified models.
  • ENERGY STAR® certified windows and patio doors are in the top of their class for energy performance. They’re 20% to 40% more efficient than conventional models.
  • Enjoy greater comfort: less condensation in cold weather and better protection against sun damage to furnishings thanks to UV filtering.

Did you know?

Up to 25% of a home’s heat losses take place through and around windows and patio doors.

What makes ENERGY STAR® certified products different


Double or triple glazing with low-emissivity (“low-e”) glass, which lets very little heat out

Double glazing with regular glass

Inert gas such as argon or krypton in sealed unit

Air in sealed unit

Warm-edge spacers (made of low-conductivity composite material)*

Aluminum spacers*

* Parts that maintain a uniform separation between panes of glass.

Learn more about energy efficiency certification

Do ENERGY STAR® certified products cost more?

ENERGY STAR® certified products don’t necessarily cost more than standard products. When they do, the money you save on heating should quickly cover the extra cost. In addition, your ENERGY STAR® certified windows and patio doors can help increase the resale value of your home. Hydro-Québec does not offer cash rebates on the purchase of ENERGY STAR® certified windows and patio doors.

Check out offers on the purchase of ENERGY STAR® certified windows for rental properties
Energy Star®, high efficiency.

Can I make a better purchasing decision based on climate zones?

You’ll be living with your decision on new windows for at least 20 years: one more reason not to waste energy. When you buy ENERGY STAR® windows or patio doors certified for the zone you live in, you know you’re getting a highly energy-efficient product. If the product is certified for a colder zone, you’ll save even more on heating.

How to choose ENERGY STAR® certified windows
Climate zone
Climate zone

What about a new house?

Because new homes often have a large floor area and many large windows, owners have a lot to gain by selecting the most energy-efficient products available. If you’re having a house built, ask the builder to put in ENERGY STAR® certified windows and patio doors. To maximize your energy savings, have your new purchases installed by a professional. An experienced installer will be able to minimize heat loss and air infiltration around the frames. Most window retailers offer installation services.

Building or renovating? Here some resources.

What should I do with my old windows and patio doors?

Ask your municipality or RCM about the services offered (curbside recycling or bulky item pickup, recycling depots, hazardous waste disposal).

Recyc-Québec (in French only) can also offer guidance. To contact Recyc-Québec, call 514 351‑7835 in the Montréal area or 1 800 807‑0678 elsewhere in Québec.

RénoVert reimbursable tax credit

To stimulate the Québec economy while helping reduce GHG emissions, the Québec government has established the RénoVert reimbursable tax credit.

The goal of the temporary tax credit is to encourage individuals to carry out eco- friendly home renovations that are known to have a positive impact on the home’s energy consumption or on the environment.

The recognized eco-friendly renovation work must be carried out by a qualified contractor (This link will open a new window) under a contract entered into after March 17, 2016, and before April 1, 2017.

You may claim 20% of the elegible expenses beyond $2,500 that you will have paid between March 17, 2016, and October 1, 2017, to a maximum of $10,000.

Learn more about RénoVert

See also

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The right moves