 |
Find the zone where you live or where the product will be
installed. Canada has been divided into four climate zones based on annual average
temperature. Zone A is the mildest, and Zone D is the coldest. 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. If you live in a location that is significantly higher in
elevation than the surrounding area, consider purchasing a product that is ENERGY STAR
qualified for at least one zone colder than where you live (especially in southern and
central British Columbia). |
ENERGY STAR qualified windows, are tested and certified by an independent, accredited
agency. Products qualify for ENERGY STAR based on either their U-value or their Energy
Rating. As well, windows and patio doors must achieve at least an A2 rating for
airtightness. The tables below show the required ratings for windows, doors and skylights
to be ENERGY STAR qualified for each climate zone in Canada.
| Zone |
Maximum U-Values
and Minimum R-Values |
Minimum Energy Rating (ER) Values (Maximum
U-Value 2.00 W/m²K) |
| |
U-Value (W/m²K) |
U-Value (Btu/hft²°F) |
R-Value (ft²h°F/Btu) |
|
(Most Windows and All Doors) |
(Picture Windows Only) |
| |
|
|
|
|
1998 |
2004* |
1998 |
2004* |
| A |
2.00 |
0.35 |
2.9 |
or |
16 |
17 |
6 |
27 |
| B |
1.80 |
0.32 |
3.2 |
or |
12 |
21 |
2 |
31 |
| C |
1.60 |
0.28 |
3.6 |
or |
8 |
25 |
+2 |
35 |
| D |
1.40 |
0.25 |
4.0 |
or |
5 |
29 |
+5 |
39 |
| *The methodology used to calculate Energy Ratings, as
defined by the Canadian Standards Association, was changed in 2004. All windows and
doors now have positive ER numbers. |
|
| PERFORMANCE
| STYLE |
AIR |
WATER |
STRENGTH |
ENERGY
STAR |
ZONE |
| Design Casement (1700) |
A3 |
B7 |
C5 |
22 |
A, B, C |
| Design Awning (1700) |
A3 |
B7 |
C5 |
20 |
A, B, C |
| Design Fixed Casement (1700) |
Fx |
B7 |
C5 |
26 |
A, B, C |
| Regal Casement (2700) |
A3 |
B7 |
C5 |
22 |
A, B, C |
| Regal Awning (2700) |
A3 |
B7 |
C5 |
21 |
A, B, C |
| Regal Fixed Casement (2700) |
Fx |
B7 |
C5 |
26 |
A, B, C |
| Marquis Casement (3700) |
A3 |
B7 |
C5 |
23 |
A, B, C, D |
| Marquis Awning (3700) |
A3 |
B7 |
C5 |
23 |
A, B, C, D |
| Marquis Fixed Casement (3700) |
Fx |
B7 |
C5 |
26 |
A, B, C, D |
| Design Vertical Slider (1800) |
A3 |
B3 |
C4 |
22 |
A, B, C |
| Design Horizontal Slider (1800) |
A3 |
B3 |
C4 |
20 |
A, B, C |
| Design Picture Window (1800) |
Fx |
B7 |
C4 |
24 |
A, B, C |
|