Energy Efficiency Ratings
 
ENERGY STAR Qualified Windows
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Style Material Brand Product Name Model Glaze Low E Gas Spacer   Umet Uimp SHGC ER ENERGY
Grills STAR
Dividers Zone(s)
Fixed (picture) Vinyl Durabuilt 700 Series 700N 3 Hard Coat Argon (x2) Non-metal - 1.13 0.2 0.5 44 A B C D
Fixed (picture) Vinyl Durabuilt 700 Series 700D 3 Hard Coat Argon Non-metal - 1.13 0.2 0.5 44 A B C D
Casement Vinyl Durabuilt 700 Series 700B 3 Hard Coat Argon Non-metal - 1.22 0.21 0.36 34 A B C D
Casement Vinyl Durabuilt 700 Series 700L 3 Hard Coat Argon (x2) Non-metal - 1.22 0.21 0.36 34 A B C D
Awning Vinyl Durabuilt 700 Series 700F 3 Hard Coat Argon Non-metal - 1.22 0.21 0.36 34 A B C D
Fixed (picture) Vinyl Durabuilt 700 Series 700H 3 Soft Coat Argon (x2) Non-metal - 1.18 0.21 0.31 32 A B C D
Single slider Vinyl Durabuilt 200 Series 200B 2 Hard Coat Argon Non-metal - 1.93 0.34 0.58 31 A B C D
Single hung Vinyl Durabuilt 200 Series 200A 2 Hard Coat Argon Non-metal - 1.93 0.34 0.58 31 A B C D
Single hung Vinyl Durabuilt 400 Series 400A 2 Hard Coat Argon Non-metal - 1.97 0.35 0.6 31 A B C D
Single slider Vinyl Durabuilt 400 Series 400B 2 Hard Coat Argon Non-metal - 1.96 0.35 0.6 31 A B C D
Single slider Vinyl Durabuilt 450 Series 450A 2 Hard Coat Argon Non-metal - 1.93 0.34 0.57 30 A B C D
Single hung Vinyl Durabuilt 450 Series 450B 2 Hard Coat Argon Non-metal - 1.93 0.34 0.57 30 A B C D
Single slider Vinyl Durabuilt 460 Series 460C 2 Hard Coat Argon (x1) Non-metal - 1.95 0.34 0.55 29 A B C D
Single hung Vinyl Durabuilt 460 Series 460B 2 Hard Coat Argon (x1) Non-metal - 1.94 0.34 0.55 29 A B C D
Single hung Vinyl Durabuilt 460 Series 460A 2 Hard Coat Argon (x1) Non-metal - 1.93 0.34 0.55 29 A B C D
Single hung Vinyl Durabuilt 410 Series 410D 2 Hard Coat Argon (x1) Non-metal - 1.93 0.34 0.55 29 A B C D
Single hung Vinyl Durabuilt 410 Series 410C 2 Hard Coat Argon (x1) Non-metal - 1.92 0.34 0.55 29 A B C D
Single slider Vinyl Durabuilt 410 Series 410B 2 Hard Coat Argon (x1) Non-metal - 1.95 0.34 0.55 29 A B C D
Single slider Vinyl Durabuilt 410 Series 410A 2 Hard Coat Argon (x1) Non-metal - 1.94 0.34 0.55 29 A B C D
Casement Vinyl Durabuilt 700 Series 700G 3 Soft Coat Argon (x2) Non-metal - 1.26 0.22 0.22 25 A B C D
Fixed (picture) Vinyl Durabuilt 700 Series 700C 2 Hard Coat Argon Non-metal - 1.8 0.32 0.63 36 A B C
Fixed (picture) Vinyl Durabuilt 700 Series 700M 2 Hard Coat Argon (x1) Non-metal - 1.8 0.32 0.63 36 A B C
Single slider Vinyl Durabuilt 460 Series 460D 2 Hard Coat Argon (x1) Non-metal - 1.96 0.35 0.55 28 A B C
Casement Vinyl Durabuilt 700 Series 700K 2 Hard Coat Argon (x1) Non-metal - 1.72 0.3 0.46 28 A B C
Awning Vinyl Durabuilt 700 Series 700E 2 Hard Coat Argon Non-metal - 1.72 0.3 0.46 28 A B C
Casement Vinyl Durabuilt 700 Series 700A 2 Hard Coat Argon Non-metal - 1.72 0.3 0.46 28 A B C
Single slider Vinyl Durabuilt 210 Series 210C 2 Hard Coat Argon (x1) Non-metal - 1.99 0.35 0.54 27 A B C
Single hung Vinyl Durabuilt 210 Series 210A 2 Hard Coat Argon (x1) Non-metal - 1.97 0.35 0.54 27 A B C
Fixed (picture) Vinyl Durabuilt 750 Series 750I 2 Soft Coat Argon (x1) Non-metal - 1.55 0.27 0.37 27 A B C
Casement Vinyl Durabuilt 750 Series 750B 2 Hard Coat Argon (x1) Non-metal - 1.75 0.31 0.44 27 A B C
Awning Vinyl Durabuilt 750 Series 750C 2 Hard Coat Argon (x1) Non-metal - 1.75 0.31 0.44 27 A B C
Single hung Vinyl Durabuilt 210 Series 210B 2 Hard Coat Argon (x1) Non-metal - 1.99 0.35 0.54 26 A B C
Fixed (picture) Vinyl Durabuilt 700 Series 700J 2 Soft Coat Argon (x1) Non-metal - 1.5 0.26 0.33 26 A B C
Fixed (picture) Vinyl Durabuilt 750 Series 750H 2 Soft Coat Argon (x1) Non-metal - 1.55 0.27 0.31 24 A B C
Awning Vinyl Durabuilt 750 Series 750G 2 Soft Coat Argon (x1) Non-metal - 1.53 0.27 0.29 23 A B C
Casement Vinyl Durabuilt 750 Series 750E 2 Soft Coat Argon (x1) Non-metal - 1.53 0.27 0.29 23 A B C
Awning Vinyl Durabuilt 750 Series 750F 2 Soft Coat Argon (x1) Non-metal - 1.53 0.27 0.24 20 A B C
Casement Vinyl Durabuilt 750 Series 750D 2 Soft Coat Argon (x1) Non-metal - 1.53 0.27 0.24 20 A B C
Casement Vinyl Durabuilt 700 Series 700I 2 Soft Coat Argon (x1) Non-metal - 1.51 0.27 0.24 20 A B C
Fixed (picture) Vinyl Durabuilt 750 Series 750A 2 Hard Coat Argon (x1) Non-metal - 1.82 0.32 0.56 33 A B
Single hung Vinyl Durabuilt 410 Series 410L 2 Soft Coat Argon (x1) Non-metal - 1.65 0.29 0.36 24 A B
Single slider Vinyl Durabuilt 460 Series 460L 2 Soft Coat Argon (x1) Non-metal - 1.67 0.29 0.37 24 A B
Single slider Vinyl Durabuilt 460 Series 460J 2 Soft Coat Argon (x1) Non-metal - 1.68 0.3 0.37 24 A B
Single hung Vinyl Durabuilt 460 Series 460H 2 Soft Coat Argon (x1) Non-metal - 1.66 0.29 0.36 24 A B
Single hung Vinyl Durabuilt 460 Series 460F 2 Soft Coat Argon (x1) Non-metal - 1.67 0.29 0.37 24 A B
Single hung Vinyl Durabuilt 410 Series 410J 2 Soft Coat Argon (x1) Non-metal - 1.66 0.29 0.36 24 A B
Single slider Vinyl Durabuilt 410 Series 410H 2 Soft Coat Argon (x1) Non-metal - 1.66 0.29 0.37 24 A B
Single slider Vinyl Durabuilt 410 Series 410F 2 Soft Coat Argon (x1) Non-metal - 1.68 0.3 0.37 24 A B
Single hung Vinyl Durabuilt 210 Series 210G 2 Soft Coat Argon (x1) Non-metal - 1.72 0.3 0.36 22 A B
Single slider Vinyl Durabuilt 210 Series 210E 2 Soft Coat Argon (x1) Non-metal - 1.74 0.31 0.36 22 A B
Single hung Vinyl Durabuilt 210 Series 210I 2 Soft Coat Argon (x1) Non-metal - 1.71 0.3 0.36 22 A B
Single hung Vinyl Durabuilt 410 Series 410K 2 Soft Coat Argon (x1) Non-metal - 1.65 0.29 0.3 21 A B
Single hung Vinyl Durabuilt 460 Series 460G 2 Soft Coat Argon (x1) Non-metal - 1.66 0.29 0.3 21 A B
Single slider Vinyl Durabuilt 410 Series 410G 2 Soft Coat Argon (x1) Non-metal - 1.66 0.29 0.3 20 A B
Single slider Vinyl Durabuilt 410 Series 410E 2 Soft Coat Argon (x1) Non-metal - 1.68 0.3 0.3 20 A B
Single hung Vinyl Durabuilt 410 Series 410I 2 Soft Coat Argon (x1) Non-metal - 1.66 0.29 0.3 20 A B
Single slider Vinyl Durabuilt 460 Series 460I 2 Soft Coat Argon (x1) Non-metal - 1.68 0.3 0.3 20 A B
Single slider Vinyl Durabuilt 460 Series 460K 2 Soft Coat Argon (x1) Non-metal - 1.67 0.29 0.3 20 A B
Single hung Vinyl Durabuilt 460 Series 460E 2 Soft Coat Argon (x1) Non-metal - 1.67 0.29 0.3 20 A B
Single slider Vinyl Durabuilt 210 Series 210D 2 Soft Coat Argon (x1) Non-metal - 1.74 0.31 0.29 18 A B
Single hung Vinyl Durabuilt 210 Series 210H 2 Soft Coat Argon (x1) Non-metal - 1.71 0.3 0.29 18 A B
Single hung Vinyl Durabuilt 210 Series 210F 2 Soft Coat Argon (x1) Non-metal - 1.72 0.3 0.29 18 A B
 
Energy Efficiency Values
Umet = U-value (W/m² - K) - The lower the number, the more energy efficient the product.
Uimp = U-value (Btu/h*ft2*F) - The lower the number, the more energy efficient the product.
SHGC = Solar Heat Gain Coefficient – The higher the number, the higher the solar gain.
ER = Energy Rating (W/m2 or dimensionless) – The higher the number, the more energy efficient the product.
 
The ER (Energy Rating) format was changed to all positive numbers (dimensionless) in October, 2004 by CSA (Canadian Standards Association) to address consumer confusion over negative numbers. The older format had a mixture of negative and positive numbers (W/m2). In our listings, all ER numbers that appear in the older format are shown in bold coloured type. An approximate conversion to the new format can be made by adding 33 to these numbers.