Window Climate Specs for Oxnard, CA

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

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

3CIECC climate zone · ENERGY STAR South-Central zone

Oxnard's climate zone, in plain terms

Oxnard falls in IECC climate zone 3C, and ENERGY STAR separately groups Ventura 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 Oxnard.

A Oxnard-Thousand Oaks-Ventura, 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 0.1 mi away.

What FEMA's risk data says about Oxnard

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 Oxnard home.

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

Strong wind: Relatively 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 Oxnard 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.

Oxnard's longest-licensed window installers

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

Coast To Coast Glass CorporationWindow and glass contractor · licensed 37 years · 93035Verify license
Friedley's Screen & GlassWindow and glass contractor · licensed 35 years · 93033Verify license
Logan ConstructionWindow and glass contractor · licensed 31 years · 93036Verify license
Anacapa Sash & MirrorWindow and glass contractor · licensed 28 years · 93035Verify license
Gold Coast Glass INCWindow and glass contractor · licensed 28 years · 93031Verify license
101 Glass & MirrorWindow and glass contractor · licensed 24 years · 93033Verify license
Fernando's GlassWindow and glass contractor · licensed 16 years · 93036Verify license
Bent Nail Door And Window Services INCWindow and glass contractor · licensed 8 years · 93035Verify license
Ventura County GlassWindow and glass contractor · licensed 3 years · 93033Verify license
Diamond Glass And Mirrors INCWindow and glass contractor · licensed 1 year · 93035Verify license
Royal GlassWindow and glass contractor · licensed under a year · 93035Verify license

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