How do I choose?

ENERGY STAR® is the international symbol of superior energy efficiency, administered in this country by Natural Resources Canada. Windows and patio doors bearing the ENERGY STAR symbol are among the most energy-efficient in their category.

Accredited independent laboratories test windows and patio doors to find out if they meet specific energy efficiency requirements for each of Canada’s four climate zones. The results of these tests determine whether the product qualifies for the ENERGY STAR label.

» Find the climate zone for your city or town

ENERGY STAR® qualified windows and patio doors meet precise energy efficiency criteria for at least one of Canada’s four climate zones (A, B, C or D). Québec includes three of the four climate zones in Canada, namely zones B, C and D.

Québec cities according to climate zone

City	Climate zone
Drummondville	B
Granby	B
Maniwaki	B
Mont-Joli	B
Montréal	B
Québec	B
Rimouski	B
Sherbrooke	B
Thetford Mines	B
Trois-Rivières	B
Bagotville	C
Baie-Comeau	C
Gaspé	C
Natashquan	C
Roberval	C
Sainte-Anne-des-Monts	C
Sept-Îles	C
Val-d'Or	C
Inukjuak	D
Kuujjuaq	D
Nitchequon	D
Schefferville	D

» Check the product label or manufacturer’s literature to find out which climate zones your product is qualified for

Sample label for a product qualified for zones A, B and C.

» Make sure the products you choose meet the ENERGY STAR requirements for your climate zone.

The more zones a product qualifies for, the more energy-efficient it is.
When you buy a window or patio door qualified for the zone you live in, you are selecting a product with superior energy performance. If the product is qualified for a zone that is colder than where you live, you'll save even more on your heating costs.

For more information on the energy efficiency of a particular window or patio door, consult the Natural Resources Canada Web site.