Bartlett, IL Climate Specs + Top-Rated Window Installers
Local risk and climate data for Bartlett, IL sit below, translated into plain terms for a window buyer rather than left as raw codes. 7 installers follow that data instead of a license roster, their rank built from Google's star rating and how many people left one. Checked October 2026.
Google Maps ratings checked · How we rank
5AIECC climate zone · ENERGY STAR Northern zone
What zone 5A means for a Bartlett window
DuPage County's normal precipitation runs about 38.0 inches a year, with 34.0 inches of snow, which is a separate question from energy performance but still shapes which window details matter in Bartlett.
Moisture and glass performance are handled by different parts of a window's spec sheet, and a Bartlett buyer benefits from checking both instead of assuming one implies the other.
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 4.5 mi away.
Storm and weather risk around Bartlett
FEMA rates DuPage County's hurricane risk as Very Low and its wind risk as Very High.
Neither rating changes a window's energy label, but both are exactly what impact-resistance and design-pressure ratings are built to answer for a Bartlett home.
Ask specifically about design pressure and impact rating for Bartlett, not just energy performance, if either risk rating comes back on the high side.
- Hurricane
- Very Low
- Strong wind
- Very High
- Winter weather
- Relatively High
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Bartlett 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.
7 top-rated window installers near Bartlett, IL
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.
- GMART IncGoogle reviews
- HARRIS ROOFING, SIDING, WINDOWS & DOORSGoogle reviews
- GWS Siding ContractorsGoogle reviews
- MWG Window ReplacementGoogle reviews
- Woodland Windows & DoorsGoogle reviews
- Window ConceptsGoogle reviews
- Bartlett Roofing, Siding & Windows, Inc.Google reviews