Low-E windows help keep homes warmer in winter and cooler in summer — the coating reflects heat back outside in summer, while in winter it lets the sun’s heat through the glass to warm your home naturally. Coastal Windows & Exteriors is a woman-owned exterior remodeling company with 7,000+ installations completed since 2011, serving 730+ towns across Massachusetts, New Hampshire and Maine.
ENERGY STAR certified windows can cut heating and cooling bills by up to 13%.
What New England Homeowners Should Know About Low-E Windows
- Bills drop: ENERGY STAR certified energy efficient windows can cut heating and cooling bills by up to 13%. Book a free estimate to compare glass options.
- Coating reflects: Low-E coatings send indoor heat back inside during winter and bounce solar heat away in summer. This energy efficient windows guide walks through the effect.
- Pros agree: Thermal performance ranks as a top priority for 87% of window professionals.
- Whole-house share: Windows make up only about 8% of a home’s exterior yet drive much of its heat loss.
- Resale return: New replacement windows return about 76% of their cost at resale.
Choosing Low-E Windows for Year-Round Comfort
Top Recommendation: Double or triple pane glass with a Low-E coating gives the most energy efficient windows for New England’s swings. Book a free estimate today.
Best for Budget: Double pane Low-E units still deliver strong year-round savings at a friendlier price.
Smart for Comfort: Adding Low-E glass to north-facing rooms cuts drafts and steadies indoor temperatures.
Ready to steady your indoor temperatures? Start with a free in-home window assessment. Coastal Windows & Exteriors is a woman-owned, family-run remodeler serving MA, NH, and ME since 2011. We hold a 4.8-star Google rating with 1,000+ verified reviews. Our team ranks #1 woman-owned in New England (Inc. 5000, Qualified Remodeler Top 500).
Request a free windows estimate from Coastal Windows & Exteriors.
Browse our complete windows FAQ guide from Coastal Windows & Exteriors.
Explore the Coastal Windows & Exteriors Windows Exterior Remodeling Home Improvement Help Center.
Still have questions about Do Low-E Windows Help Keep Homes Warmer in Winter and Cooler in Summer? See the areas we serve and talk to your local windows contractor.
Last Updated: August 2026
Sources
- Installing ENERGY STAR certified windows can cut heating and cooling bills by up to 13%. ENERGY STAR Residential Windows, Doors & Skylights, federal guidance on certified window energy savings. (Accessed August 2026)
- Thermal performance is a top priority for 87% of window and door professionals. Fixr Windows and Doors Report, 2026 industry survey of window and door professionals. (2026)
- Windows make up about 8% of a home’s exterior surface area yet account for much of its heat loss. PNNL How Triple-Pane Windows Stop Energy and Money Flying Out the Window, national lab research on window heat loss. (Accessed August 2026)
- New replacement windows return about 76% of their cost at resale. JLC Cost vs. Value Report, national remodeling resale data. (2026)
