What West Sacramento Homes Need From a Replacement Window

West Sacramento sits in IECC climate zone 3B, which sets the energy-performance bar for any window installed here. Below that, a short list of West Sacramento's longest-licensed window contractors can turn a spec into an actual installed window.

Licenses checked September 30, 2026 · California Contractors State License Board

3BIECC climate zone · ENERGY STAR South-Central zone

What zone 3B means for a West Sacramento window

West Sacramento falls in IECC climate zone 3B, and ENERGY STAR separately groups Yolo County into its South-Central 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 West Sacramento.

A Sacramento-Roseville-Folsom, CA 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 4.4 mi away.

Storm and weather risk around West Sacramento

FEMA scores Yolo County's winter-weather risk as Very Low and its flood risk as Relatively Moderate.

Winter risk in West Sacramento 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 West Sacramento contractor, not one.

Strong wind: Very Low
Winter weather: Very Low

Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).

Guides to finish before West Sacramento 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 West Sacramento

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

Horizon Contract Glazing INCWindow and glass contractor · licensed 34 years · 95605Verify license
Clark PacificWindow and glass contractor · licensed 32 years · 95605Verify license
Glass West INCWindow and glass contractor · licensed 21 years · 95691Verify license
A G SWindow and glass contractor · licensed 18 years · 95691Verify license
Ventana Installations INCWindow and glass contractor · licensed 16 years · 95691Verify license
Smart Energy SolutionsWindow and glass contractor · licensed 16 years · 95691Verify license
Itzko Glass And Metal INCWindow and glass contractor · licensed 15 years · 95691Verify license
Door 28 INCWindow and glass contractor · licensed 14 years · 95691Verify license
USA Bath California Remodeling INCWindow and glass contractor · licensed 13 years · 95691Verify license
Glass WorxWindow and glass contractor · licensed 8 years · 95605Verify license
Bobs Glass INCWindow and glass contractor · licensed 7 years · 95691Verify license

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