Newton's Climate Data and Its Top-Rated Window Pros
Newton sits in IECC climate zone 5A, which sets the energy-performance bar here no matter who ends up installing your windows. A window license file doesn't cover Newton on this site, so Google Maps supplies the 10 ranked names you see below. Checked September 2026.
Google Maps ratings checked · How we rank
5AIECC climate zone · ENERGY STAR Northern zone
What zone 5A means for a Newton window
Newton falls in IECC climate zone 5A, and ENERGY STAR separately groups Middlesex County into its Northern zone for window certification.
Those two numbers, not the brand on the box, set the U-factor and SHGC worth checking on any quote you get in Newton.
A Boston-Cambridge-Newton, MA-NH contractor who can't name either one on request is worth a second question before you sign.
Data: U.S. EPA / DOE, ENERGY STAR, ENERGY STAR Version 7.0 Climate Zones by County/ZIP (Windows, Doors, and Skylights) (V7.0); Pacific Northwest National Laboratory (DOE Building America), Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270) (2021 IECC), from the nearest NOAA station 4.7 mi away.
Storm and weather risk around Newton
FEMA scores Middlesex County's winter-weather risk as Relatively Moderate and its flood risk as Relatively High.
Winter risk in Newton weighs on U-factor and condensation resistance; flood risk weighs more on sill height and drainage detailing than on the glass package.
Treat these as two separate conversations with a Newton contractor, not one.
- Hurricane
- Relatively High
- Strong wind
- Relatively High
- Winter weather
- Relatively Moderate
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Newton window bids come in
- How to Read an NFRC Window Label Four numbers on one sticker decide most of a window's real-world performance. Here's what each one means.
- ENERGY STAR Window Criteria by Climate Zone ENERGY STAR splits the country into four zones, each with its own numbers. Here they are, and why the Northern zone works backward from the other three.
- Impact Windows vs. Shutters in Florida's Hurricane Zones Florida gives homeowners two paths to a protected opening. Here's how each one is tested, and where the HVHZ raises the bar further.
10 top-rated window installers near Newton, MA
The order below weighs a Google rating against its review count, the same way this site weighs a U-factor against a brochure claim: on the number, not the name. Treat it as a rating, never as proof of a license, bond or HVHZ approval.
- Fisher WindowsGoogle reviews
- Rydica home solutionsGoogle reviews
- Window WorkingGoogle reviews
- Boston Doors and WindowsGoogle reviews
- Three Sons Window & More Inc.Google reviews
- Power Home RemodelingGoogle reviews
- Harvey Building ProductsGoogle reviews
- Ace Glass Company - Ace Automatic DoorGoogle reviews
- ProGlass & LockGoogle reviews
- Hillcrest Glass Company, IncGoogle reviews