Window Climate Specs for Long Beach, CA
Long Beach sits in IECC climate zone 3B, which sets the energy-performance bar for any window installed here. Below that, a short list of Long Beach's longest-licensed window contractors can turn a spec into an actual installed window.
Licenses checked · California Contractors State License Board
3BIECC climate zone · ENERGY STAR South-Central zone
Long Beach's climate zone, in plain terms
Los Angeles-Long Beach-Anaheim, CA runs a January average near 57°F and climbs to about 73°F by July, a swing that adds up to roughly 1,173 heating degree days most winters, with 1,166 on the summer cooling side of the ledger.
That load is the actual argument for paying up for a better U-factor in Long Beach, separate from anything a brochure claims.
Zone 3B's requirement is the floor; Long Beach's specific load is what tells you whether beating that floor is worth the extra cost.
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 2.5 mi away.
What FEMA's risk data says about Long Beach
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 Long Beach home.
Ask specifically about design pressure and impact rating for Long Beach, not just energy performance, if either risk rating comes back on the high side.
- 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 Long Beach 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.
Long Beach's longest-licensed window installers
Oldest license first, newest last, pulled directly from the state's file. This list isn't for sale.
- Broadway Glass And Mirror INCVerify license
- Builders GlassVerify license
- Glass - Man Glass CorporationVerify license
- High Definition Glass INCVerify license
- Loram Construction CorporationVerify license
- S S H Window And DoorVerify license
- I S A Window Renovation INCVerify license
- Allied GlassVerify license
- G & R Door And GlassVerify license
- American Window RestorationVerify license
- JVL ConstructionsVerify license
- Local Glass FitterVerify license