ABOUT THE AUTHOR
Jared Everett is the Founder and CEO of Proficient Windows and has more than 7 years of experience in the window replacement industry. Since founding Proficient Windows in 2024, Jared and his team have completed approximately 200 residential window replacement projects across Texas, Utah, Arizona, New Mexico, Nevada, and Idaho.
QUICK ANSWER
Yes. New energy-efficient windows can lower energy bills by reducing heat transfer, improving insulation, eliminating drafts, and helping HVAC systems operate more efficiently. According to ENERGY STAR®, replacing outdated single-pane windows with ENERGY STAR-certified models can save homeowners between $101 and $583 annually depending on climate and home characteristics.
TABLE OF CONTENTS
1. Why Old Windows Increase Energy Costs
2. How Energy-Efficient Windows Work
3. Low-E Glass Explained
4. Understanding U-Factor and SHGC
5. Real Benefits Beyond Energy Savings
6. When Should You Replace Your Windows?
7. Frequently Asked Questions
WHY DO OLD WINDOWS INCREASE ENERGY COSTS?
According to the U.S. Department of Energy (DOE), heat gain and heat loss through windows account for approximately 25%–30% of residential heating and cooling energy use.
As windows age, seals fail, weatherstripping deteriorates, and frames can warp. These issues allow conditioned air to escape and outdoor temperatures to enter the home. The result is a heating and cooling system that works harder, runs longer, and consumes more energy.
At Proficient Windows, many homeowners contact us because they notice rooms that never seem comfortable. In many cases, the windows are a major contributor to the problem.
HOW DO ENERGY-EFFICIENT WINDOWS WORK?
Modern replacement windows use several technologies designed to improve thermal performance:
• Low-E glass coatings
• Argon gas-filled panes
• Double- and triple-pane construction
• Advanced weather sealing
• Improved frame materials
Together, these features help reduce heat transfer and improve comfort throughout the year.
WHAT IS LOW-E GLASS?
Low-E (low emissivity) glass contains a microscopic metallic coating that reflects heat while allowing natural light to pass through. During summer, it helps keep unwanted heat outside. During winter, it helps retain indoor warmth.
Benefits include:
• Lower cooling costs
• Improved winter comfort
• Reduced fading of flooring and furniture
• Better indoor temperature consistency
WHAT IS A U-FACTOR?
The U-Factor measures how effectively a window prevents heat transfer. Lower numbers indicate better insulation performance.
A high-quality replacement window typically performs significantly better than older builder-grade or single-pane windows.
WHAT IS SHGC?
SHGC stands for Solar Heat Gain Coefficient. It measures how much solar heat passes through a window.
In warmer climates such as Texas, Arizona, and Nevada, lower SHGC ratings can help reduce cooling costs by limiting unwanted solar heat gain.
REAL BENEFITS HOMEOWNERS NOTICE
Lower energy bills are only one benefit.
Homeowners often report:
• Fewer drafts
• More comfortable rooms
• Reduced outside noise
• Improved home appearance
• Better resale appeal
• Less strain on HVAC systems
One homeowner in Texas told us that after replacing older windows with Low-E energy-efficient models, a west-facing room that was nearly unusable during summer afternoons became one of the most comfortable rooms in the house.
DO NEW WINDOWS REDUCE OUTSIDE NOISE?
Yes. Double-pane and triple-pane windows create insulating barriers that help reduce sound transmission from:
• Traffic
• Construction
• Neighbors
• Lawn equipment
• General outdoor activity
Many customers tell us the quieter indoor environment is one of the most noticeable improvements after installation.
DO NEW WINDOWS INCREASE HOME VALUE?
Replacement windows are consistently considered one of the most valuable home improvement projects.
New windows can:
• Improve curb appeal
• Increase energy efficiency
• Modernize the home’s appearance
• Increase buyer confidence
• Improve resale value
WHEN SHOULD YOU REPLACE YOUR WINDOWS?
Consider replacement if you notice:
• Rising energy bills
• Drafts around closed windows
• Condensation between panes
• Difficulty opening or closing windows
• Excessive outdoor noise
• Visible frame damage
• Windows older than 15–20 years
WHY TRUST PROFICIENT WINDOWS?
Since opening in 2024, Proficient Windows has completed approximately 200 residential window replacement projects across Texas, Utah, Arizona, New Mexico, Nevada, and Idaho.
Our mission is to provide honest recommendations, professional installations, and energy-efficient solutions that improve comfort, efficiency, and long-term value.
FREQUENTLY ASKED QUESTIONS
How much can new windows lower energy bills?
According to ENERGY STAR®, homeowners may save between $101 and $583 annually depending on location and window type.
Are ENERGY STAR windows worth it?
Yes. They meet strict efficiency standards and can help reduce heating and cooling costs.
How long do replacement windows last?
Most quality replacement windows last between 20 and 30 years.
What is the difference between double-pane and triple-pane windows?
Triple-pane windows include an additional layer of glass and insulation, providing greater thermal performance and sound reduction.
SOURCES
U.S. Department of Energy (DOE)
ENERGY STAR®
National Fenestration Rating Council (NFRC)