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Energy Star Climate Zones


What is ENERGY STAR©?

  • ENERGY STAR is an international symbol of energy efficiency.
  • The ENERGY STAR symbol helps consumers quickly and easily identify equipment that save energy. ENERGY STAR identifies products as the top high efficiency performer in their category.
  • ENERGY STAR is a dynamic government/industry partnership that makes it easy for businesses and consumers to save money and protect the environment.
  • Check out ENERGY STAR Initiative for Residential Windows, Doors and Skylights

What makes ENERGY STAR qualified products better? 
 
In addition to costing less to operate, ENERGY STAR qualified products are better from an environmental perspective. They use less energy to do the same job as non-ENERGY STAR qualified products, thereby creating fewer greenhouse gas emissions - the major cause of climate change. They also help reduce other pollutants that contribute to problems such as urban smog and acid rain.

Energy-efficient fenestration products will:

  • reduce your home energy costs by 7 to 12 percent
  • reduce or eliminate cold drafts
  • collect less condensation
  • reduce noise from outside
Euroclad offers a selection of ENERGY STAR qualified windows and doors for every zone in Canada.

Simple steps to find your zone!
  • Canada has been divided into four climate zones based on annual average temperature. Zone A is the mildest, and Zone D is the coldest.
  • Find the zone where you live or where the product will be installed using the map below.
  • Look for the ENERGY STAR symbol in our showroom or ask your salesperson, contractor or renovator.
  • Make sure that the product model you are buying is qualified for the correct climate zone, or, to save even more energy, for colder zones.

**The Okanagan Valley north of Summerland is Zone B and south of Summerland is Zone A.**


Energy Rating

The Energy Rating (ER) value is calculated using a formula that balances a product's U-value with its potential solar gain solar heat gain coefficient (SHGC). The SHGC is a measure of solar heat gain and air-tightness.

The following tables show the levels for each zone in Canada. The ratings given in the tables are for the entire product. Energy efficiency ratings for the glass portion only, often called "centre-of-glass" ratings, usually make the product appear more energy efficient than it really is.

ENERGY STAR Requirements for Windows and Doors (Products may comply based on either their U-value and R-value or their Energy Rating) 

Windows (Effective October 1, 2010)
Zone
Heating
Degree-Day
Range
Compliance Paths
Energy Rating (ER)
or
U-Factor
Minimum ER (unitless)
Maximum U-Factor 2.00
W/m²•K
(0.35 Btu/h•ft.²•°F)
Maximum
U-Factor
W/m²•K
(Btu/h•ft.²•°F)
Minimum ER
(unitless)
A
<= 3500
21
or
1.80 (0.32)
13
B
> 3500 to <= 5500
25
or
1.60 (0.28)
17
C
> 5500 to <= 8000
29
or
1.40 (0.25)
21
D
> 8000
34
or
1.20 (0.21)
25


 
Doors (Effective October 1, 2010)
Zone
Heating
Degree-Day
Range
Compliance Paths
Energy Rating (ER)
or
U-Factor
Minimum ER (unitless)
Maximum U-Factor 2.00
W/m²•K
(0.35 Btu/h•ft.²•°F)
Maximum
U-Factor
W/m²•K
(Btu/h•ft.²•°F)
Minimum ER
(unitless)
A
<= 3500
21
or
1.80 (0.32)
N/A
B
> 3500 to <= 5500
25
or
1.60 (0.28)
N/A
C
> 5500 to <= 8000
29
or
1.40 (0.25)
N/A
D
> 8000
34
or
1.20 (0.21)
N/A

© Reproduced with permission of the Minister of Natural Resources Canada, 2010.