Why Energy Efficient Windows and Doors Matter
When shopping for replacement windows and doors, energy efficiency is key. Energy Star-rated products not only lower your utility bills but also enhance home comfort and reduce your carbon footprint. Discover how Sane Windows and Doors can help you achieve superior energy efficiency and performance.
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0% Interest Financing + $150 OFF Each Pella Window
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Why Energy Efficiency Matters
Reduce Utility Bills By
12%
Earn Back Over
Of Your Project Cost
Tax Credits Of
$600
Reduce Utility Bills
Improve Home Comfort
Increase Home Value
Earn Tax Credits
Support a Green Future
The Energy Efficiency of Windows and Doors
Energy-efficient Pella windows and doors from Sane Windows are a smart investment for any home. Pella's advanced window technology works like a two-way mirror—allowing natural light in while reflecting infrared radiation to maintain a steady indoor temperature and reduce energy costs.
Key Benefits:
Triple Pane Efficiency:
- Upgrade to triple pane glass to boost energy efficiency by an average of 62% over single pane options.
Low-E Glass Coating:
- Every window comes standard with a low-emissivity (Low-E) coating optimized for your climate, effectively blocking harmful UV rays.
Argon Gas Insulation:
- We incorporate Argon gas between panes to provide an extra insulating layer that minimizes heat transfer.
Learn more by watching the video above and discover how energy-efficient Pella windows and doors can enhance home comfort, reduce utility bills, and improve overall energy performance. Schedule your free in-home estimate with Sane Windows and Doors today!
Ready to Make Your Home ENERGY STAR® Certified?
ENERGY STAR® is a trusted government-backed symbol of energy efficiency, sustainability, and cost savings. At Sane Windows and Doors, we offer ENERGY STAR® qualified glass packages from Pella to help you upgrade your home with energy-efficient windows and doors. Learn about the certification requirements and discover how you can achieve ENERGY STAR® status in your region.
R-Value Requirements
R-Value determines how well the insulation inside your window performs. The higher your R-value, the better insulated your window is.
- Northern: 13 – 21
- North-Central: 13 – 21
- South-Central: 13 – 21
- Southern: 13 – 21
U-Factor Requirements
U-Factor measures the rate at which heat flows through an object. The lower your U-value, the less heat your windows allow through them.
- Northern: ≤ .27
- North-Central: ≤ .30
- South-Central: ≤ .30
- Southern: ≤ .40
Why High-Performing, Energy-Efficient Insulated Products Matter
At Sane Windows and Doors of St. Louis, we meet ENERGY STAR® Northern Climate standards to ensure superior insulation. Our windows and doors maintain a U-Value of ≤0.27 and an R-Factor between 13 and 21, delivering the energy efficiency and comfort your home needs in colder climates.
Energy Efficiency Terms You Need to Know
Low-E Glass
Low-E (low-emissivity) glass features a microscopic metallic coating that filters incoming light. It blocks unwanted heat gain in the summer while allowing beneficial solar warmth in the winter—boosting energy efficiency and reducing utility costs.
Warm-Edge Spacer System
This innovative technology minimizes condensation and reduces edge-to-glass heat loss. By sealing in heat, warm-edge spacers enhance window performance and longevity, making them a popular choice for energy-efficient installations.
Argon Gas
Argon is a colorless, odorless, nonreactive gas with high density and low thermal conductivity. When placed between window panes, it acts as an insulating barrier—improving thermal performance and ensuring year-round comfort.
LIMITED TIME OFFER
0% Interest Financing PLUS $150 OFF Each Pella Window
St. Louis’ Leader in Windows & Doors
Request Your Free Estimate Today
