Glass options
Nobody takes energy efficiency more seriously than Andersen. That’s why we offer multiple high-performance glass options that make it possible to get Andersen® windows and patio doors that are ENERGY STAR® certified, no matter where you live in the country.
Choosing The Right Glass
Most people can enjoy optimal energy performance and comfort with our standard Low-E/Low-E4® glass offerings. Low-E ('low-emissive') glass reflects heat in the summer and helps keep heat inside in the winter, making this a good choice in climates where both heating and cooling costs are a concern.
Additional glass performance options include SmartSun™ glass that blocks 95% of the sun’s harmful UV rays and PassiveSun™ glass that brings the heat from sunlight into your home. Check with your Andersen dealer for glass options that make Andersen products ENERGY STAR® certified in your area.
Glass Performance Options
Low-E / Low-E4® Glass
Most people can enjoy optimal energy performance and comfort with Low-E/Low-E4® glass. Low-E glass reflects heat in the summer and helps keep heat inside in the winter, making this a good choice in climates where both heating and cooling costs are a concern.
Ideal for: All Climates
Available on: Low-E glass is available on all Andersen products.
SmartSun™ Glass
SmartSun™ glass gives you the benefits of Low-E glass, plus it helps shield your home from the sun’s heat and filters out 95% of harmful UV rays while letting sunlight shine through.
Ideal for: All Climates
Available on: SmartSun™ glass is available on all Andersen® products.
Sun Glass
Sun glass offers outstanding thermal performance with a subtle tint that blocks out even more heat from the sun.
Ideal for: Southern Climates
Available on: E-Series, A-Series, 400 Series, 200 Series and 100 Series products.
PassiveSun® Glass
If you live in a cold climate, PassiveSun® glass allows the sun to heat your home.
Ideal for: Northern Climates
Available on: PassiveSun® glass is available on all Andersen® products.Triple-Pane Glass
An extra pane of glass helps keep more heat in and cold air out, making this our most energy-efficient glass option. Perfect for colder climates where more months of the year are spent heating the home.
Ideal for: Northern Climates
Available on: A-Series Windows and Patio Doors, E-Series Windows and Patio Doors, 400 Series Patio Doors, and select 200 Series Patio Doors.
Select Andersen® A-Series windows are recognized as Most Efficient of ENERGY STAR® in 2025. Specific glass options apply.
Dual-Pane Glass
Clear dual-pane glass offers basic thermal performance. It's available on select Andersen products in situations where codes allow its use. See your local code official for requirements in your area.
HeatLock® Technology
HeatLock® coating can be added to most of our glass options and reflects heat that likes to escape your home.
Ideal for: Northern Climates
Available on: HeatLock Technology is available with most of our products.
Energy performance details
SmartSun™ | U-factorHow well a product prevents heat from escaping. | Solar heat gain coefficientHow well a product blocks heat caused by sunlight. | Visible light transmittanceHow much visible light comes through a product. | UV protectionHow well a product blocks ultraviolet rays. |
|---|---|---|---|---|
SmartSun with HeatLock™ Coating | U-factorHow well a product prevents heat from escaping. | Solar heat gain coefficientHow well a product blocks heat caused by sunlight. | Visible light transmittanceHow much visible light comes through a product. | UV protectionHow well a product blocks ultraviolet rays. |
Low-E4®/Low-E | U-factorHow well a product prevents heat from escaping. | Solar heat gain coefficientHow well a product blocks heat caused by sunlight. | Visible light transmittanceHow much visible light comes through a product. | UV protectionHow well a product blocks ultraviolet rays. |
Low-E4 with HeatLock™ Coating | U-factorHow well a product prevents heat from escaping. | Solar heat gain coefficientHow well a product blocks heat caused by sunlight. | Visible light transmittanceHow much visible light comes through a product. | UV protectionHow well a product blocks ultraviolet rays. |
Sun | U-factorHow well a product prevents heat from escaping. | Solar heat gain coefficientHow well a product blocks heat caused by sunlight. | Visible light transmittanceHow much visible light comes through a product. | UV protectionHow well a product blocks ultraviolet rays. |
PassiveSun® | U-factorHow well a product prevents heat from escaping. | Solar heat gain coefficientHow well a product blocks heat caused by sunlight. | Visible light transmittanceHow much visible light comes through a product. | UV protectionHow well a product blocks ultraviolet rays. |
PassiveSun with Heatlock® Coating | U-factorHow well a product prevents heat from escaping. | Solar heat gain coefficientHow well a product blocks heat caused by sunlight. | Visible light transmittanceHow much visible light comes through a product. | UV protectionHow well a product blocks ultraviolet rays. |
Triple-Pane (with Low-E coatings on two surfaces) | U-factorHow well a product prevents heat from escaping. | Solar heat gain coefficientHow well a product blocks heat caused by sunlight. | Visible light transmittanceHow much visible light comes through a product. | UV protectionHow well a product blocks ultraviolet rays. |
Clear Dual-Pane | U-factorHow well a product prevents heat from escaping. | Solar heat gain coefficientHow well a product blocks heat caused by sunlight. | Visible light transmittanceHow much visible light comes through a product. | UV protectionHow well a product blocks ultraviolet rays. |
Additional Options
Decorative and specialty glass
Safety Glass
Tempered safety glass is available on all products, and comes standard on all Beefy Bifold Door.
Laminated Glass
Laminated glass is also available, for added strength, enhanced security and sound control.
Sound-Reducing Glass
This glass helps reduce the volume of outside noise. Available with Low-E, SmartSun and HeatLock coatings.Art Glass
Andersen® art glass is available in a wide variety of patterns adding uncommon elegance to any home style.
Patterned Glass
Let in light while obscuring vision and adding a unique decorative touch to your home.Cascade
Fern
Obscure
Reed
Satin Etched
Coastal glass options
OUR TOUGHEST PROTECTION FOR WINDOWS AND DOORS.
Low-E4® Impact-Resistant Glass provides all the benefits of monolithic impact-resistant glass, while adding an insulating air space that helps keep homes cool in the summer and warm in the winter.
Available in: A-Series, E-Series, 400 Series, Weiland
Low-E4 SmartSun™ Impact-Resistant Glass delivers the benefits of Low-E4 glass, plus it helps shield homes from the sun's heat and filters out 95% of harmful UV rays while letting the sunlight shine through.
Available in: A-Series, E-Series, 400 Series, Weiland
Low-E4 Sun Impact-Resistant Glass is tinted for maximum protection from the effects of intense sunlight and provides all the benefits of Low-E4 glass.
Available in: A-Series, E-Series, 400 Series, Weiland
Low-E4 SmartSun™ Monolithic Impact-Resistant Glass* is reinforced with a clear plastic laminate sandwiched between two panes to resist impact, forced entry and unwanted noise. Choose from clear or gray.
Available in: A-Series Patio Doors, E-Series, 400 Series Windows, Weiland
*The combination of heat strengthened and laminated glass could result in visible distortion of the glass. This distortion is not considered to be a defect in the glass.
See your local code official for building code requirements in your area.
Glass spacers
Black glass spacer shown
Glass spacer options
Black
Stainless Steel
White
More details
Entry doors info sheet
Additional glass options info sheet
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