What Westlake Village Homes Need From a Replacement Window
ENERGY STAR groups Los Angeles County into its South-Central zone, which is the U-factor and SHGC target worth checking against any quote you get in Westlake Village. The longest-licensed window contractors based in Westlake Village are listed below the climate data.
Licenses checked · California Contractors State License Board
3BIECC climate zone · ENERGY STAR South-Central zone
What zone 3B means for a Westlake Village window
Los Angeles County's normal precipitation runs about 22.4 inches a year, with 0.0 inches of snow, which is a separate question from energy performance but still shapes which window details matter in Westlake Village.
Moisture and glass performance are handled by different parts of a window's spec sheet, and a Westlake Village 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 13.2 mi away.
Storm and weather risk around Westlake Village
FEMA scores Los Angeles County's winter-weather risk as Relatively Moderate and its flood risk as Very High.
Winter risk in Westlake Village 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 Westlake Village contractor, not one.
- Strong wind
- Relatively Moderate
- 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 Westlake Village 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 Westlake Village
Oldest license first, newest last, pulled directly from the state's file. This list isn't for sale.
- Oxnard Glass CompanyVerify license
- Westlake Glass INCVerify license
- Smith Bros INCVerify license
- Westoaks Glass And Mirror INCVerify license
- Thousand Oaks Glass & MirrorVerify license
- Aloe GlassVerify license
- GW Glazing SolutionsVerify license
- Your Air SolutionsVerify license