Des Plaines's Climate Data and Its Top-Rated Window Pros
Des Plaines 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 Des Plaines on this site, so Google Maps supplies the 10 ranked names you see below. Checked October 2026.
Google Maps ratings checked · How we rank
5AIECC climate zone · ENERGY STAR Northern zone
Des Plaines's climate zone, in plain terms
Cook County's normal precipitation runs about 37.9 inches a year, with 38.4 inches of snow, which is a separate question from energy performance but still shapes which window details matter in Des Plaines.
Moisture and glass performance are handled by different parts of a window's spec sheet, and a Des Plaines 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 3.2 mi away.
What FEMA's risk data says about Des Plaines
FEMA scores Cook County's winter-weather risk as Very High and its flood risk as Very High.
Winter risk in Des Plaines 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 Des Plaines contractor, not one.
- Hurricane
- Very Low
- Strong wind
- Very High
- Winter weather
- Very High
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Des Plaines 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.
Des Plaines's top-rated window installers, by Google
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.
- Royalty Windows & ExteriorsGoogle reviews
- Illinois Window Well Cover CompanyGoogle reviews
- Renewal by Andersen of ChicagoGoogle reviews
- AF Window Replacement & InstallationGoogle reviews
- Home Window Repair & ReplacementGoogle reviews
- EV Windows & Doors, Inc.Google reviews
- Perfect Windows & SidingGoogle reviews
- JS Siding ContractorsGoogle reviews
- John J Windows ReplacementGoogle reviews
- First Choice Window ReplacementGoogle reviews