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The Energy Star program was developed by the U.S Department of Energy and the U.S Environmental Protection Agency to help identify energy-efficient choices for your home. The Energy Star seal is only granted to products that demonstrate significant reduction in energy consumption in the home. All Ontario Choice windows listed meet or exceed U.S and Canadian regulations to be considered Energy Star compliant.
Structural Performance
All Ontario Choice Window products have been tested to the following industry standards:

1. CSA A400-00 Windows
2. NAFS - AAMA/WDMA/CSA 101/I.S.2/A440-05 US-Requirements
3. NAFS - AAMA/WDMA/CSA 101/I.S.2/A440-05 Canadian-Requirements
Test results are available upon request.

 

Double-Pane Glass Performance
Product Series Glazing Fill Grid 0.75 C.O.G
R-Value		 R-Value Energy Star
U-Value
Canada		 Energy Star
U-Factor
United States		 SHGC VT ER Canadian
Zones		 US
Zones
Classic
Casement
3-1/4"		 WC100 Clear IG Air   2.1 2.6 2.2 0.39 0.48 0.51
Low-E Argon   3.4 3.5 1.6 0.28 0.45 0.47 31 A-B-C-D All Zones
Low-E2 Argon   4.0 3.8 1.47 0.26 0.26 0.45 22 A-B-C All Zones
Low-E Argon Grid 3.4 3.5 1.6 0.28 0.41 0.42 29 A-B-C-D All Zones
Low-E2 Argon Grid 4.0 3.8 1.47 0.26 0.24 0.40 21 A-B-C All Zones
Classic
Awning
3-1/4"		 WC125 Clear IG Air 2.1 2.5 2.27 0.40 0.48 0.51
Low-E Argon 3.4 3.6 1.59 0.28 0.45 0.47 31 A-B-C-D All Zones
Low-E2 Argon 4.0 3.8 1.47 0.26 0.26 0.45 23 A-B-C All Zones
Low-E Argon Grid 3.4 3.6 1.6 0.28 0.41 0.42 29 A-B-C-D All Zones
Low-E2 Argon Grid 4.0 3.8 1.47 0.26 0.24 0.40 21 A-B-C All Zones
Classic
Fixed
Casement
3-1/4"		 WC175 Clear IG Air 2.1 2.5 2.38 0.40 0.48 0.51
Low-E Argon 3.4 3.6 1.64 0.28 0.45 0.47 31 A-B-C-D All Zones
Low-E2 Argon 4.0 3.8 1.47 0.26 0.26 0.45 23 A-B-C All Zones
Low-E Argon Grid 3.4 3.6 1.64 0.28 0.41 0.42 29 A-B-C-D All Zones
Low-E2 Argon Grid 4.0 3.8 1.47 0.26 0.24 0.40 21 A-B-C All Zones
Classic
Single
Slider
3-1/4"		 WC200 Clear IG Air 2.1 2.2 2.55 0.45 0.59 0.63
Low-E Argon 3.1 3.2 1.76 0.31 0.56 0.58 33 A-B-C-D All Zones
Low-E2 Argon 4.0 3.6 1.56 0.28 0.32 0.55 23 A-B-C All Zones
Low-E Argon Grid 3.4 3.2 1.76 0.31 0.50 0.52 29 A-B-C-D All Zones
Low-E2 Argon Grid 4.0 3.6 1.59 0.28 0.29 0.49 21 A-B-C All Zones
Classic
Single
Hung
3-1/4"		 WC201 Clear IG Air 2.1 2.2 2.55 0.45 0.59 0.63
Low-E Argon 3.4 3.2 1.76 0.31 0.56 0.58 33 A-B-C-D All Zones
Low-E2 Argon 4.0 3.6 1.59 0.28 0.32 0.55 23 A-B-C All Zones
Low-E Argon Grid 3.4 3.2 1.76 0.31 0.50 0.52 29 A-B-C-D All Zones
Low-E2 Argon Grid 4.0 3.6 1.59 0.28 0.29 0.49 21 A-B-C All Zones
Classic
Double
Slider
3-1/4"		 WC250 Clear IG Air 2.1 2.3 2.49 0.44 0.55 0.58
Low-E Argon 3.4 3.2 1.76 0.31 0.51 0.53 28 A-B-C All Zones
Low-E2 Argon 4.0 3.6 1.59 0.28 0.30 0.51 20 A-B-C All Zones
Low-E Argon Grid 3.4 3.2 1.76 0.31 0.46 0.47 25 A-B-C All Zones
Low-E2 Argon Grid 4.0 3.6 1.59 0.28 0.27 0.45 18 A-B-C All Zones
Classic
Double
Hung
3-1/4"		 WC251 Clear IG Air 2.1 2.3 2.5 0.44 0.57 0.60
Low-E Argon 3.4 3.2 1.76 0.31 0.53 0.55 30 A-B-C-D All Zones
Low-E2 Argon 4.0 3.6 1.59 0.28 0.31 0.53 21 A-B-C All Zones
Low-E Argon Grid 3.4 3.2 1.76 0.31 0.47 0.49 26 A-B-C All Zones
Low-E2 Argon Grid 4.0 3.6 1.59 0.28 0.28 0.47 19 A-B-C All Zones
Classic
Single
Slider
3-1/4"		 WC325 Clear IG Air 2.1 2.2 2.6 0.46 0.62 0.66
Low-E Argon 3.4 3.2 1.76 0.31 0.58 0.60 Pending All Zones
Low-E2 Argon 4.0 3.6 1.59 0.28 0.34 0.58 Pending All Zones
Low-E Argon Grid 3.4 3.2 1.76 0.31 0.52 0.54 Pending All Zones
Low-E2 Argon Grid 4.0 3.6 1.59 0.28 0.30 0.52 Pending All Zones
Classic
Casement
4-1/2"		 WC400 Clear IG Air 2.1 2.6 2.2 0.39 0.47 0.49
Low-E Argon 3.4 3.6 1.59 0.28 0.44 0.45 30 A-B-C-D All Zones
Low-E2 Argon 4.0 4.0 1.42 0.25 0.25 0.43 23 A-B-C-D All Zones
Classic
Awning
4-1/2"		 WC425 Clear IG Air 2.1 2.6 2.21 0.39 0.46 0.49
Low-E Argon 3.4 3.5 1.59 0.28 0.44 0.45 29 A-B-C-D All Zones
Low-E2 Argon 4.0 4.0 1.42 0.25 0.25 0.43 22 A-B-C-D All Zones
Classic
Fixed LP
4-1/2"		 WC450 Clear IG Air 2.1 2.4 2.38 0.42 0.54 0.58
Low-E Argon 3.4 3.6 1.59 0.28 0.51 0.53 35 A-B-C All Zones
Low-E2 Argon 4.0 4.0 1.42 0.25 0.30 0.51 26 A-B-C-D All Zones
Classic
Fixed
Casement
4-1/2"		 WC475 Clear IG Air 2.1 2.4 2.38 0.42 0.56 0.60
Low-E Argon 3.5 3.5 1.64 0.29 0.53 0.55 36 A-B-C-D All Zones
Low-E2 Argon 4.0 3.8 1.47 0.26 0.31 0.53 38 A-B-C-D All Zones
Heritage
Casement
3-1/4"		 HC101 Clear IG Air 2.1 2.5 2.27 0.40 0.49 0.52
Low-E Argon 3.5 3.5 1.64 0.29 0.46 0.47 30 A-B-C-D All Zones
Low-E2 Argon 3.9 3.8 1.47 0.26 0.27 0.45 23 A-B-C All Zones
Low-E Argon Grid 3.5 3.5 1.64 0.29 0.42 0.43 28 A-B-C All Zones
Low-E2 Argon Grid 3.9 3.8 1.47 0.26 0.24 0.41 21 A-B-C All Zones
Heritage
Awning
3-1/4"		 HC126 Clear IG Air 2.1 2.5 2.27 0.40 0.49 0.52
Low-E Argon 3.5 3.5 1.64 0.29 0.46 0.47 39 A-B-C-D All Zones
Low-E2 Argon 3.9 3.8 1.47 0.26 0.27 0.45 27 A-B-C All Zones
Low-E Argon Grid 3.5 3.5 1.64 0.29 0.42 0.43 36 A-B-C All Zones
Low-E2 Argon Grid 3.9 3.8 1.47 0.26 0.24 0.41 25 A-B-C All Zones
Heritage
Fixed LP
3-1/4"		 HC151 Clear IG Air 2.1 2.2 2.55 0.45 0.67 0.71
Low-E Argon 3.3 3.3 1.7 0.30 0.63 0.65 39 A-B-C-D All Zones
Low-E2 Argon 3.9 3.7 1.53 0.27 0.36 0.63 27 A-B-C All Zones
Low-E Argon Grid 3.3 3.3 1.7 0.30 0.57 0.59 36 A-B-C All Zones
Low-E2 Argon Grid 3.9 3.7 1.53 0.27 0.33 0.56 25 A-B-C All Zones
Heritage
Fixed
Casement
3-1/4"		 HC176 Clear IG Air 2.1 2.3 2.44 0.43 0.58 0.62
Low-E Argon 3.3 3.5 1.64 0.29 0.55 0.57 36 A-B-C-D All Zones
Low-E2 Argon 3.9 3.8 1.47 0.26 0.32 0.54 26 A-B-C All Zones
Low-E Argon Grid 3.3 3.5 1.64 0.29 0.49 0.51 32 A-B-C All Zones
Low-E2 Argon Grid 3.9 3.8 1.47 0.26 0.29 0.48 24 A-B-C All Zones
Heritage
Double
Slider
LO
3-1/4"		 HC350 Clear IG Air 2.1 2.2 2.55 0.45 0.56 0.59
Low-E Argon 3.4 3.2 1.76 0.31 0.52 0.54 Pending All Zones
Low-E2 Argon 4.0 3.6 1.59 0.28 0.30 0.52 Pending All Zones
Low-E Argon Grid 3.4 3.2 1.76 0.31 0.47 0.48 Pending All Zones
Low-E2 Argon Grid 4.0 3.6 1.59 0.28 0.27 0.46 Pending All Zones
Ultra
Single
Patio
Door
5-1/2"		 WC500 Clear IG Air 2.1 2.3 2.43 0.43 0.58 0.61 Pending
Low-E Argon 3.4 3.3 1.6 0.30 0.54 0.56 Pending All Zones
Low-E2 Argon 4.0 3.7 1.52 0.27 0.31 0.53 Pending All Zones
Low-E Argon Grid 3.4 3.3 1.6 0.30 0.48 0.49 Pending All Zones
Low-E2 Argon Grid 4.0 3.7 1.52 0.27 0.27 0.47 Pending All Zones


Triple-Pane and Laminated Glass Performance
Product Series Glazing Fill Grid 0.75 C.O.G
R-Value		 R-Value Energy Star
U-Value
Canada		 Energy Star
U-Factor
United States		 SHGC VT ER Canadian
Zones		 US
Zones
Classic
Casement
3-1/4"		 WC100 Low-E2 Argon 5.9 4.8 1.2 0.21 0.22 0.35 26 A-B-C-D All Zones
Triple Low-E2 Argon Grid 5.9 4.8 1.2 0.21 0.20 0.32 25 A-B-C-D All Zones
Pane Low-E2 Krypton 8.7 5.6 1.0 0.18 0.22 0.35 30 A-B-C-D All Zones
WC100 Low-E2 Argon 3.9 3.8 1.5 0.26 0.29 0.44 24 A-B-C All Zones
Laminated Low-E2 Argon Grid 3.9 3.8 1.5 0.26 0.27 0.39 23 A-B-C All Zones
Tri Pane Low-E2 Krypton 4.2 4.0 1.4 0.25 0.29 0.44 26 A-B-C-D All Zones
Classic
Fixed
Casement
3-1/4"		 WC175 Low-E2 Argon 5.9 5.3 1.1 0.19 0.31 0.50 33 A-B-C-D All Zones
Triple Low-E2 Argon Grid 5.9 5.0 1.1 0.20 0.28 0.45 30 A-B-C-D All Zones
Pane Low-E2 Krypton 8.9 6.3 0.9 0.16 0.27 0.43 35 A-B-C-D All Zones
WC175 Low-E2 Argon 3.9 3.8 1.5 0.26 0.41 0.62 31 A-B-C-D All Zones
Laminated Low-E2 Argon Grid 3.9 3.8 1.5 0.26 0.37 0.55 29 A-B-C-D All Zones
Tri Pane Low-E2 Krypton 4.2 4.0 1.4 0.25 0.35 0.53 29 A-B-C-D All Zones
Heritage
Casement
3-1/4"		 HC101 Low-E2 Argon 5.9 4.8 1.18 0.21 0.23 0.36 27 A-B-C-D All Zones
Triple Low-E2 Argon Grid 5.9 4.5 1.2 0.22 0.21 0.33 24 A-B-C-D All Zones
Pane Low-E2 Krypton 8.9 5.6 1.02 0.18 0.23 0.36 34 A-B-C-D All Zones
HC101 Low-E2 Argon 3.9 3.8 1.47 0.26 0.30 0.45 24 A-B-C All Zones
Laminated Low-E2 Argon Grid 3.9 3.8 1.5 0.26 0.27 0.40 23 A-B-C All Zones
Tri Pane Low-E2 Krypton 4.2 4.0 1.4 0.25 0.30 0.45 26 A-B-C-D All Zones
Heritage
Fixed LP
3-1/4"		 HC151 Low-E2 Argon 5.9 5.3 1.07 0.19 0.31 0.50 34 A-B-C-D All Zones
Triple Low-E2 Argon Grid 5.9 5.0 1.1 0.20 0.28 0.45 31 A-B-C-D All Zones
Pane Low-E2 Krypton 8.7 6.7 0.85 0.15 0.31 0.50 39 A-B-C-D All Zones
HC151 Low-E2 Argon 3.9 3.7 1.53 0.27 0.41 0.62 30 A-B-C All Zones
Laminated Low-E2 Argon Grid 3.9 3.7 1.5 0.27 0.37 0.55 28 A-B-C All Zones
Tri Pane Low-E2 Krypton 4.2 4.0 1.4 0.25 0.41 0.62 33 A-B-C-D All Zones
Heritage
Fixed
Casement
3-1/4"		 HC176 Low-E2 Argon 5.9 5.0 1.1 0.20 0.27 0.43 26 A-B-C All Zones
Triple Low-E2 Argon Grid 5.9 4.8 1.19 0.21 0.24 0.39 24 A-B-C All Zones
Pane Low-E2 Krypton 8.7 6.3 0.9 0.16 0.27 0.43 31 A-B-C-D All Zones
HC176 Low-E2 Argon 3.9 3.8 1.47 0.26 0.36 0.54 28 A-B-C All Zones
Laminated Low-E2 Argon Grid 3.9 3.8 1.47 0.26 0.32 0.48 26 A-B-C All Zones
Tri Pane Low-E2 Krypton 4.2 4.0 1.4 0.25 0.36 0.54 30 A-B-C-D All Zones
Ultra
Single
Patio
Door
5-1/2"		 WC500 Low-E2 Krypton 8.9 5.9 0.96 0.17 0.27 0.43 All Zones
Triple
Pane
WC500 Low-E2 Krypton 4.1 3.8 1.47 0.26 0.31 0.53 All Zones
Laminated
Tri Pane
Ontario Choice. Specializing in energy efficient windows: casement windows, awning windows, double hung windows, bay windows, bow windows, single hung windows, picture windows and custom windows, energy saving doors: steel doors, fiberglass doors, vinyl patio doors, vinyl sliding doors, steel entrance doors, garden doors, French doors, fiberglass entrance doors, storm doors and porch enclosures, siding installation. Ontario Choice Window and Door services: Toronto, GTA, Greater Toronto Area, Brampton, Mississauga, Oakville, Toronto, Ajax, Aurora, Barrie, Bolton, Bradford, Brampton, Caledon, Etobicoke, Georgetown, Keswick, King City, Kleinburg, Maple, Markham, Milton, Mississauga, Newmarket, Nobelton, North York, Oakville, Orangeville, Oshawa, Pickering, Richmond Hill, Sutton Stouffville, Thornhill,Toronto, Uxbridge, Whitby, Woodbridge, Barrie, Peterborough, Collingwood, Cobourg, Guelph, Kitchener, Cambridge, Waterloo, Brantford, Burlington, Hamilton, Elmvale, Orillia, Barrie, Brampton, Mississauga, Oshawa, Hamilton, York, Durham, Peel, Halton, Simcoe County.