What is Low-E Glass?
Quick Summary: Low E Glass is a high-performance window coating that improves energy efficiency by reflecting heat and reducing UV damage. In Colorado’s high-altitude climate, Low-E coated windows deliver year-round performance—reflecting intense summer heat to keep interiors cooler, while helping retain indoor warmth during frigid winters—all without sacrificing natural light or mountain views. This guide explains each type—Low-E1, E2, E3, and ERS—and shows how Infinity from Marvin integrates these technologies into premium fiberglass windows.
Discover everything you need to know about Low E Glass from Denver's top window experts. Learn about its benefits, types, and how it can improve energy efficiency in your home.
Why Low-E Glass Matters in Colorado
Low-E, or low-emissivity glass, features a microscopically thin coating that reflects heat while allowing light to pass through. This coating helps reduce unwanted heat loss in the winter and heat gain in the summer. Infinity from Marvin uses Cardinal LoĒ³-366 glass for exceptional energy efficiency and clarity, offering protection without compromising your view.
Curious about which window style fits your Colorado home best? Explore our full guide to replacement window types.
Benefits of Low E Glass for Denver Homes
- Improves insulation and comfort year-round
- Reduces energy bills by enhancing window performance
- Blocks up to 95% of harmful UV rays to prevent fading
- Maintains natural light and clear visibility
- Helps regulate indoor humidity levels
Want better energy performance year-round? Learn how Infinity from Marvin’s LoĒ³-366 glass meets ENERGY STAR® ratings across Colorado.
Comparing Types of Low-E Glass
Low E1 Glass
Low E1 is ideal for colder climates where maximizing passive solar heat is beneficial. It allows more sunlight to enter while providing strong insulation against heat loss.
Low E2 Glass
Low E2 offers a balance of insulation and solar heat control, making it suitable for a range of climates including Colorado. Its two metallic layers help reflect infrared heat while still allowing in natural light.
Low E3 Glass
Low E3 is designed for sunnier regions where reducing solar gain is crucial. It uses three layers of reflective coating to maximize energy savings without darkening the glass.
Low ERS Glass
Low ERS glass features an interior-facing coating that reflects radiant heat back into the room. Often used alongside Low E2 or E3, it enhances performance and helps maintain indoor warmth.
Learn more about solar heat gain coefficients.
How Infinity from Marvin Uses Low-E Glass
Infinity from Marvin offers premium fiberglass replacement windows using Cardinal LoĒ³-366 glass. This triple-layered Low E coating improves thermal performance while maintaining visible light transmission. It meets ENERGY STAR® guidelines across all climate zones.
Coupled with LoĒ-i89® glass, Infinity windows offer energy efficiency even in the coldest regions like Colorado. The combination also enhances comfort, reduces UV exposure, and helps manage humidity levels.
Discover why Colorado homeowners trust our Infinity from Marvin fiberglass windows for maximum comfort and energy savings.
What to Expect with Low-E Window Installation in Denver
In Colorado’s climate, Low E glass installation can make a dramatic difference in energy efficiency and comfort. Our trained in-house team at Gravina’s Window Center of Littleton ensures precision installation of Infinity from Marvin windows with advanced Low E coatings.
Thinking about a window upgrade? Schedule a free quote from Colorado’s oldest Infinity dealer.
Frequently Asked Questions about Low-E Glass
What is the difference between Low E2 and Low E3 glass?
Low E2 has two metallic layers and offers balanced performance, while Low E3 uses three layers to enhance solar control in sunnier climates.
Does Low E glass work well in Colorado?
Yes. Low E glass, especially LoĒ³-366, helps insulate homes during cold winters and blocks solar heat during sunny summers, making it ideal for Colorado.
Can Low E glass affect my view?
Not significantly. Modern Low E coatings like LoĒ³-366 maintain clear visibility while improving energy performance.
What type of Low E glass does Infinity from Marvin use?
Infinity from Marvin uses LoĒ³-366 glass with an optional LoĒ-i89® layer for maximum efficiency.
How do I know if a Low E window meets industry standards?
Look for windows that are certified by organizations like ENERGY STAR®, the National Fenestration Rating Council (NFRC), or meet local building code requirements. These certifications ensure the glass meets strict performance criteria for U-Factor, SHGC (solar heat gain coefficient), and visible transmittance.
At Gravina’s Window Center of Littleton®, all our Infinity from Marvin windows use Cardinal LoĒ³-366® glass, which is ENERGY STAR® certified for every U.S. climate zone and tested by the NFRC for trusted performance.
Ready to Upgrade Your Windows?
Infinity from Marvin windows with Low E glass are the perfect fit for Colorado’s climate. Installed by our expert in-house team, they deliver comfort, clarity, and long-term energy savings.
View all the different types of windows or contact our team to start your window replacement journey.