Everett, WA: Climate Zone, Risk and Window Requirements

ENERGY STAR groups Snohomish County into its Northern zone, which is the U-factor and SHGC target worth checking against any quote you get in Everett. The longest-licensed window contractors based in Everett are listed below the climate data.

Licenses checked September 30, 2026 · Washington State Department of Labor & Industries

4CIECC climate zone · ENERGY STAR Northern zone

What zone 4C means for a Everett window

Moisture and glass performance are handled by different parts of a window's spec sheet, and a Everett 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 1 mi away.

Storm and weather risk around Everett

Snohomish County's hail risk sits at Very Low and its wildfire risk at Very Low, according to FEMA's National Risk Index.

Hail risk matters for glass and screen durability in Everett; wildfire risk matters more for the frame material and nearby vegetation than for the glass itself.

Either way, it's a reasonable question to bring to a Everett installer before you settle on a product line.

Strong wind: Very Low
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 Everett 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.

Window installers with the longest license records in Everett

Oldest license first, newest last, pulled directly from the state's file. This list isn't for sale.

Goldfinch Bros INCWindow and glass contractor · licensed 60 years · 98204Verify license
Clearview Glass CO INCWindow and glass contractor · licensed 26 years · 98203Verify license
AAA Kartak Glass & Closet CorpWindow and glass contractor · licensed 21 years · 98201Verify license
AAA Kartak Storefront/GLZG INCWindow and glass contractor · licensed 20 years · 98201Verify license
R & L Glass Installation LLCWindow and glass contractor · licensed 17 years · 98208Verify license
The Glass CompanyWindow and glass contractor · licensed 16 years · 98201Verify license
Super Siding And WindowsWindow and glass contractor · licensed 5 years · 98204Verify license
Seaview GlassWindow and glass contractor · licensed 5 years · 98204Verify license
Midnight Tint Of Everett LLCWindow and glass contractor · licensed 3 years · 98201Verify license
Level & Square LLCWindow and glass contractor · licensed under a year · 98204Verify license

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