What Fresno Homes Need From a Replacement Window

Local risk and climate data for Fresno, 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

3BIECC climate zone · ENERGY STAR South-Central zone

What zone 3B means for a Fresno window

Fresno falls in IECC climate zone 3B, and ENERGY STAR separately groups Fresno 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 Fresno.

A Fresno, 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 4.3 mi away.

Storm and weather risk around Fresno

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 Fresno home.

Ask specifically about design pressure and impact rating for Fresno, 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 Fresno 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 Fresno

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

San Joaquin Glass CompanyWindow and glass contractor · licensed 59 years · 93703Verify license
Abbey Office Furnishings INCWindow and glass contractor · licensed 47 years · 93711Verify license
America One FireplacesWindow and glass contractor · licensed 42 years · 93792Verify license
Sierra Lock & Glass INCWindow and glass contractor · licensed 40 years · 93278Verify license
Action Glass & ScreenWindow and glass contractor · licensed 34 years · 93727Verify license
Fresno Window Company INCWindow and glass contractor · licensed 33 years · 93703Verify license
Dan's Glass And ScreenWindow and glass contractor · licensed 30 years · 93722Verify license
Pro Glass & Quality Screens INCWindow and glass contractor · licensed 29 years · 93711Verify license
S J V Empire Glass INCWindow and glass contractor · licensed 27 years · 93727Verify license
Quality Replacement Windows & DoorsWindow and glass contractor · licensed 27 years · 93727Verify license
Country BuildersWindow and glass contractor · licensed 18 years · 93710Verify license
Central Valley Glass INCWindow and glass contractor · licensed 16 years · 93727Verify license

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