When you invest in window replacement, you’re making a statement about the long-term value and comfort of your home. Understanding the glass technology—like High-Performance Low-E4® Glass—is critical, especially given the diverse and challenging climates faced by customers of Renewal by Andersen.
The core of the Renewal by Andersen promise is delivering Signature Service through the best people, a superior process, and an exclusive product that includes innovative glass. This guide reframes the benefits of Low-E4® glass through the lens of local challenges across the Southwest, Texas, and New England.
Understanding the Energy Science: Low-E4® vs. Ordinary Glass
Low-E4® glass features four layers of advanced metallic coating that act as an intelligent barrier, managing heat transfer while allowing visible light through. This multi-layer system is a significant advancement over standard low-emissivity (Low-E) coatings, enhancing performance across various seasons and regions.
The "Low-E" (low emissivity) principle is the glass’s ability to reflect radiant heat. This dual-action design is what makes it superior year-round:
- In Summer: It reflects long-wave infrared radiation (heat) back outside.
- In Winter: It reflects interior heat back into your living space.
This engineering provides measurable efficiency: High-Performance Low-E4 glass is 56% more energy efficient in summer and 47% more energy efficient in winter compared to ordinary dual-pane glass.
Localizing Performance: Why Low-E4® Matters in Your Climate
The benefits of Low-E4® glass shift depending on local climate needs. Renewal by Andersen uses this technology to deliver specialized glass packages that maximize comfort and energy savings.
Hot & Arid Regions (Phoenix, Las Vegas, San Antonio, Austin)
In the scorching heat of the Southwest and Texas, solar heat gain is the primary driver of high utility bills.
- Need: Maximize heat reflection and prevent UV damage.
- Best Glass Option: Low-E4® SmartSun™ Glass
- SmartSun™ Glass is engineered for performance in both hot and cool weather.
- It blocks up to 95% of UV rays that can damage drapes, flooring, and artwork.
- High-Performance Low-E4 SmartSun™ glass is 70% more energy efficient in summer compared to ordinary dual-pane glass.
- The Esler Value: Keeps interior spaces cooler without constant AC usage, and protects interior furnishings from sun damage.
Cold & Temperate Regions (Rhode Island, Connecticut, Martha's Vineyard)
In New England, retaining interior warmth and minimizing drafts is essential.
- Need: High insulation value (low U-factor) and reduced heat loss.
- Best Option: Enhanced Triple Pane
- Features three independent glass panes and gas-filled air spaces.
- Provides superior insulation and is the most energy-efficient glass option for colder climates.
- The Esler Value: Reduces cold spots, eliminates drafts, and lowers heating costs.
Fibrex® Material and the Installation Advantage
Advanced glass requires a stable frame and precise installation. This integrated approach is central to Renewal by Andersen Signature Service.
1. The Frame: Fibrex® Composite Material
Low-E4® glass performance depends on a stable, energy-efficient frame. Fibrex® material (made from reclaimed wood fiber and polymer) offers:
- Low Thermal Transfer: Blocks heat transfer nearly 700 times better than aluminum.
- Strength & Durability: Fibrex® frames will not crack, pit, or corrode, ensuring long-term airtight performance.
2. The Process: Professional, On-Site Installation
Renewal by Andersen ensures the entire system performs as designed.
- One-Company Accountability: Sales, manufacturing, installation, and service are all handled under one roof.
- Certified Master Installers: Trained in proper handling, sealing, orientation of coated surfaces, and weatherproofing.
- All-Inclusive Cost: Installation includes removal, disposal, opening prep, assembly, sealing, and cleanup—never piecemeal labor charges.
Why Choose Renewal by Andersen?
Choosing an exclusive product installed by highly trained professionals through a streamlined, superior process is how you maximize value. Customers also benefit from one of the strongest fully transferable limited warranties available, covering the entire window system.
Frequently Asked Questions
Q: Is Low-E4® glass enough to qualify for energy efficiency incentives?
A: Enhanced Triple Pane glass options have been recognized as among the most efficient ENERGY STAR® certified products. Homeowners should explore available incentives and rebates.
Q: Is professional installation necessary for optimal performance?
A: Yes. Improper installation can compromise gas fills, coatings, and seals—eliminating the thermal benefits. Certified installers ensure correct placement, sealing, and performance.
Q: Will the special coatings wear off over time?
A: Low-E4® coatings are engineered to maintain their performance for the full lifespan of the window when properly manufactured and installed.
Q: Does this glass help with noise reduction?
A: Yes. The multi-pane construction and insulating gas blends reduce sound penetration, helping minimize noise pollution in busy or urban areas.
