Window Climate Specs for Hayward, CA

Local risk and climate data for Hayward, CA are below, translated into plain terms for a window buyer rather than left as raw codes. Use it to check a proposed spec before you sign, not just to browse.

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

3CIECC climate zone · ENERGY STAR South-Central zone

Hayward's climate zone, in plain terms

Moisture and glass performance are handled by different parts of a window's spec sheet, and a Hayward 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 2 mi away.

What FEMA's risk data says about Hayward

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 Hayward home.

Ask specifically about design pressure and impact rating for Hayward, not just energy performance, if either risk rating comes back on the high side.

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 Hayward 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.

Hayward's longest-licensed window installers

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

Capitol Glass COWindow and glass contractor · licensed 46 years · 94545Verify license
A C T GlassWindow and glass contractor · licensed 33 years · 94544Verify license
Jesus Flores ConstructionWindow and glass contractor · licensed 32 years · 94542Verify license
Forderer Cornice Works INCWindow and glass contractor · licensed 28 years · 94545Verify license
Ronson Shower Glass & Mirror INCWindow and glass contractor · licensed 27 years · 94545Verify license
Masterpiece WindowsWindow and glass contractor · licensed 24 years · 94545Verify license
Glassall IncorporatedWindow and glass contractor · licensed 20 years · 94542Verify license
J M Glass INCWindow and glass contractor · licensed 14 years · 94544Verify license
Renewal By Andersen Of San FranciscoWindow and glass contractor · licensed 14 years · 94544Verify license
Super Mario Glass INCWindow and glass contractor · licensed 10 years · 94544Verify license
Aac Glass INCWindow and glass contractor · licensed 8 years · 94544Verify license
J C 2 Glass Shower Door & Mirrors INCWindow and glass contractor · licensed 8 years · 94541Verify license

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