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What does Energy Star certified mean for windows?

White replacement double-hung windows installed on gray vinyl siding home to improve energy efficiency in summer.

Energy Star certified means a window meets strict government efficiency benchmarks for blocking heat loss and gain. It also means these windows are designed to keep your home warmer in the winter and cooler in the summer.

What Type of Windows Are the Most Energy Efficient?

A full exterior window replacement upgraded this home with durable double-hung windows and enhanced weather protection. It’s Time to Replace Your Windows when homeowners want improved efficiency, quieter interiors, and updated exterior style.

The most energy efficient windows pair ENERGY STAR certification, 0.1 CFM rating, a low U-factor, and Low-E glass. Which replacement windows are most energy efficient depends on U-factor, glass package, and frame material together.

How Much Does It Cost to Replace Windows Near Me?

A newly installed bay window brightens this living room with natural light and improved energy efficiency. It’s Time to Replace Your Windows if your current windows are outdated, drafty, or limiting your home's comfort and curb appeal.

Window replacement in New England averages $21,922, per the JLC Cost vs. Value 2026 report. How much does it cost to replace windows? Your total shifts with window count, size, frame material, glass package, and install complexity.

When should a patio door be replaced?

modern front door installation in Franklin MA designed to reduce outside noise and improve home comfort

Replace your patio door when it’s 15 to 20 years old, leaks air, or shows visible damage. Modern Soft-Lite sliders deliver dramatically better performance.