LoĒ-180ESC Glass for Canada

When the weather turns bitterly cold in Canada, Cardinal LoĒ-180ESC™ glass is like a warm welcome to your home.

LoĒ-180ESC is an update of our successful LoĒ-180 glass and is designed to help meet the new performance requirements for ENERGY STAR® Canada in 2020.

It keeps homes warmer and more comfortable by blocking heat loss to the outside and letting the sun’s heat stream in. With a glass U-Factor of just 0.26 and an SHGC of 0.71, LoĒ-180ESC is the ideal product for passive solar applications in Canada.

Glass Made for ENERGY STAR 2020 Requirements in Canada

ENERGY STAR version 5.0, issued by Natural Resources Canada (NrCan), went into effect on January 1, 2020. The improved energy efficiency requirements can be met with either a maximum U-Factor of 1.22 (W/m²·K) / 0.21 (BTU/hr·ft²·°F) or minimum Energy Rating (ER) of 34 for the window or door.

Meeting this low U-Factor would require a triple pane insulating glass unit. A dual pane option can meet the minimum 34 Energy Rating, requiring the window to balance a high solar heat gain coefficient (SHGC) with a low U-Factor.

To match the updated and expanded ENERGY STAR Canada guidelines, Cardinal CG has developed the LoĒ-180ESC coating. It’s engineered to help more windows and doors meet the new Energy Rating of 34 throughout Canada. LoĒ-180ESC is a 3rd surface coating for a dual pane unit which allows more energy from the sun to enter the home while the low U-Factor keeps the heat in.

Blocks out the cold, lets in the light.

Cardinal LoĒ-180ESC delivers outstanding cold weather performance – its insulation value is excellent with a low 0.26 U-Factor. And with an SHGC of 0.71, it lets the winter sun’s heat pass into the home. It also blocks 75 percent of the sun’s harmful UV rays. While blocking out the cold and UV rays, it lets the daylight stream in – more light than ordinary low-e glass.

Our unique coating stops thermal loss

Cardinal employs a state-of-the-art sputter coating process that is unmatched by any other glass manufacturer. The glass is coated with a microscopically thin, optically transparent layer of silver sandwiched between layers of anti-reflective metal oxide coatings. A protective coating is applied to assure durability and long life. The coating is virtually invisible to the eye – it’s just like looking through clear glass.

Glass Performance

Cardinal CG has additional products and configurations to further improve the Energy Rating if LoĒ-180ESC by itself isn’t enough. Some windows won’t meet the ER ≥ 34 regardless of the glass configurations or products due to the design of the window, which could include frame materials, dividers and air loss. In that case, please consult with your window manufacturer for window design guidance.
IG Type
and Coating
LoĒ-180 + LoĒ-i89
LoĒ-180ESC + LoĒ-i89
    Visible light
  • 79%
  • 77%
  • 80%
  • 78%
  • 15%
  • 15%
  • 15%
  • 15%
  • 15%
  • 14%
  • 15%
  • 14%
  • 0.69
  • 0.62
  • 0.71
  • 0.64
  • 29%
  • 27%
  • 25%
  • 24%
  • 1.48
  • 1.19
  • 1.50
  • 1.20
  • 0.26
  • 0.21
  • 0.26
  • 0.21

Note: All values calculated using LBNL Window 7. (See https://windows.lbl.gov/software and https://windows.lbl.gov/software/window for more information on glass optical data and the LBNL Window 7 program.)

Solar Heat Gain Coefficient - (SHGC) - The amount of solar radiation that enters a building as heat. The lower the number, the better the glazing is at preventing solar gain.

UV Transmittance - A portion of the solar spectrum (300 to 380 nm), which represents the energy that accounts for the majority of fading of materials and furnishings. The lower the number, the better the glass is for reducing fading potential.

U-Factor - This represents the heat flow rate through a window expressed in W/m²·K (SI units) or BTU/hr·ft²·°F (IP units), using winter night weather conditions of -18°C (0°F) outside and 21°C (70°F) inside. The lower the number, the better the window system is at reducing heat loss.

LoĒ-180ESC Helps Meet New Requirements

Cardinal I.Q. (Intelligent Quality Assurance Program) ensures the quality of every piece of glass. Using our own patented inspection systems, we thoroughly examine the glass from start to finish.

LoĒ-180ESC is the perfect glass to be both comfortable and compliant with the new requirements for Canada ENERGY STAR.

To learn more about LoĒ-180ESC and other Cardinal Glass products, ask your window manufacturer, contractor or architect.

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Additional Resources for This Product

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