Urban Honolulu, HI Climate Specs + Top-Rated Window Installers
ENERGY STAR groups Honolulu County into its Southern zone, the U-factor and SHGC target worth checking against any quote you get in Urban Honolulu. Below that spec discussion sit 10 installers, their order set by Google rating, since Urban Honolulu is outside this site's window license file. A high rating is worth a look, not a finished decision.
Google Maps ratings checked · How we rank
1AIECC climate zone · ENERGY STAR Southern zone
Urban Honolulu's climate zone, in plain terms
That load is the actual argument for paying up for a better U-factor in Urban Honolulu, separate from anything a brochure claims.
Zone 1A's requirement is the floor; Urban Honolulu'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 1 mi away.
What FEMA's risk data says about Urban Honolulu
Honolulu County's hail risk sits at Very Low and its wildfire risk at Relatively High, according to FEMA's National Risk Index.
Hail risk matters for glass and screen durability in Urban Honolulu; wildfire risk matters more for the frame material and nearby vegetation than for the glass itself.
Either way, it's a reasonable question to bring to a Urban Honolulu installer before you settle on a product line.
- Hurricane
- Relatively Low
- Strong wind
- Very Low
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Urban Honolulu 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.
Urban Honolulu's top-rated window installers, by Google
The order below weighs a Google rating against its review count, the same way this site weighs a U-factor against a brochure claim: on the number, not the name. Treat it as a rating, never as proof of a license, bond or HVHZ approval.
- Window World of OahuGoogle reviews
- Discount Windows & DoorsGoogle reviews
- Sunburst WindowsGoogle reviews
- The Glass Guru of HonoluluGoogle reviews
- Elite Construction ServicesGoogle reviews
- Oahu Metal & Glazing, LLCGoogle reviews
- RSG RE: Screen & GlassGoogle reviews
- Island Windows & DoorsGoogle reviews
- Diamond Head Windows & DoorsGoogle reviews
- Akamai Glass Company, Inc.Google reviews