ClimaGuard® Residential Glass Innovation

ClimaGuard 53/23

Happy African American woman relaxing in the living room and reading a book. CL-09-H

Future-oriented performance for warmer climates

Guardian ClimaGuard 53/23 is triple-silver coated glass designed for warmer climates. With 53% light transmission and a solar heat gain coefficient of 0.23, this glass helps control heat, glare, and AC costs — without sacrificing natural light. Consider ClimaGuard 53/23 for your premium windows and doors today, and keep using it as standards get more stringent.

Key features:

Natural sunlight and clarity: Offers clear views and daylight
Unique third layer of silver: Three layers control heat and glare
Lowers cooling and heating expenses: Blocks 77% of the sun's heat and insulates better than standard double-pane windows
The perfect temperature year-round: Comfortable living in summer heat or cooler temperatures

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Today’s Premium. Tomorrow’s Standard.

As energy standards and consumer expectations get more stringent, more silver is being added to low-E windows. But all silver layers are not created equal. When more silver is added, less light is transmitted and the window’s heat savings flatline. The answer is not more silver — but the most efficient way to get a balanced products. With 3 layers of silver, Guardian ClimaGuard 53/23 achieves performance in line with “Quad” products.

Want to learn more about energy codes?

Read more about the role solar control will play in achieving higher energy performance requirements in Guardian's article, “Choosing Glass: Navigating Today and Tomorrow’s Energy Codes.”

Product Literature Downloads:

53/23 Flyer ClimaGuard® Brochure

3 Layers of Silver. Future-Oriented Performance.

Product Information

Glass Substrates

  • Clear (2.3 - 5 mm)

Applications

  • Windows
  • Doors
  • Skylights

Manufacturing Options

  • Tempered
  • Laminated
  • Heat Strengthened
  • Annealed

Available Sizes

  • Maximum Height x Width: 100" x 144"

Recommended coating positions

  • Double glazed: #2 surface

Application type

  • Use: Insulating Glass Unit
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Performance Data

Double glazed Double glazed

  • TRANSMITTANCE

    1. Visible Light 53%
    2. Ultraviolet 14%
    3. Solar Energy 20%
    4. Light to Solar Gain (LSG) 2.28

  • Reflectance

    1. Visible Light Outside 12%
    2. Visible Light Inside 12%
    3. Solar Energy Outside 41%

  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.24
    2. Winter Nighttime - Air 0.29
    3. Summer Daytime - Air 0.27

  • Heat Gain

    1. Relative Heat Gain (RHG) 57
    2. Solar Heat Gain Coefficient (SHGC) 0.23

  • Composition

    1. IG 3 mm/12.7 mm/3 mm - Coating on surface #2
    2. Outboard lite ClimaGuard 53/23(#2)
    3. Inboard lite Guardian Float Clear
    4. Calculation Standard NFRC-2010

See product specifications

DOUBLE GLAZED W/ IS-20 DOUBLE GLAZED W/ IS-20

  • TRANSMITTANCE

    1. Visible Light 51%
    2. Ultraviolet 13%
    3. Solar Energy 20%
    4. Light to Solar Gain (LSG) 2.29

  • Reflectance

    1. Visible Light Outside 13%
    2. Visible Light Inside 12%
    3. Solar Energy Outside 41%

  • U-VALUE

    1. Winter Nighttime - Argon(90%) 0.20
    2. Winter Nighttime - Air 0.24
    3. Summer Daytime - Air 0.21

  • Heat Gain

    1. Relative Heat Gain (RHG) 55
    2. Solar Heat Gain Coefficient (SHGC) 0.23

  • Composition

    1. IG 3 mm/12.7 mm/3 mm - Coating on surface #2 and #4
    2. Outboard lite ClimaGuard 53/23(#2)
    3. Inboard lite ClimaGuard IS-20(#4)
    4. Calculation Standard NFRC-2010

See product specifications