What North Hollywood 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 North Hollywood. The longest-licensed window contractors based in North Hollywood are listed below the climate data.

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

3BIECC climate zone · ENERGY STAR South-Central zone

What zone 3B means for a North Hollywood window

North Hollywood falls in IECC climate zone 3B, and ENERGY STAR separately groups Los Angeles 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 North Hollywood.

A Los Angeles-Long Beach-Anaheim, 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 2.5 mi away.

Storm and weather risk around North Hollywood

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 North Hollywood home.

Ask specifically about design pressure and impact rating for North Hollywood, 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 North Hollywood 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 North Hollywood

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

Rohan Glass Company INCWindow and glass contractor · licensed 57 years · 91606Verify license
Met-Tec Shower EnclosuresWindow and glass contractor · licensed 49 years · 91605Verify license
Sunland Glass WorksWindow and glass contractor · licensed 46 years · 91605Verify license
Westchester Glass INCWindow and glass contractor · licensed 31 years · 91605Verify license
Coastal Glass & Mirror INCWindow and glass contractor · licensed 14 years · 91601Verify license
Vetro Glass INCWindow and glass contractor · licensed 11 years · 91605Verify license
No Ho GlassWindow and glass contractor · licensed 10 years · 91605Verify license
Lindsey's Glass INCWindow and glass contractor · licensed 8 years · 91605Verify license
A + Glass & Mirror INCWindow and glass contractor · licensed 7 years · 91605Verify license
Suren's GlassWindow and glass contractor · licensed 7 years · 91605Verify license
Tabarez Glass INCWindow and glass contractor · licensed 7 years · 91601Verify license
Glass & Mirror GuysWindow and glass contractor · licensed 6 years · 91601Verify license

Compare climate data in other California cities

All cities in California →