Tempe's Climate Data and Its Top-Rated Window Pros
ENERGY STAR groups Maricopa County into its Southern zone, the U-factor and SHGC target worth checking against any quote you get in Tempe. Below that spec discussion sit 10 installers, their order set by Google rating, since Tempe 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
2BIECC climate zone · ENERGY STAR Southern zone
Tempe's climate zone, in plain terms
Phoenix-Mesa-Chandler, AZ runs a January average near 55°F and climbs to about 91°F by July, a swing that adds up to roughly 1,183 heating degree days most winters, with 3,681 on the summer cooling side of the ledger.
That load is the actual argument for paying up for a better U-factor in Tempe, separate from anything a brochure claims.
Zone 2B's requirement is the floor; Tempe'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 2.6 mi away.
What FEMA's risk data says about Tempe
FEMA rates Maricopa County's hurricane risk as Very Low and its wind risk as Very High.
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 Tempe home.
Ask specifically about design pressure and impact rating for Tempe, not just energy performance, if either risk rating comes back on the high side.
- Hurricane
- Very Low
- Strong wind
- Very High
- Winter weather
- Relatively Low
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Tempe 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.
Tempe'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.
- Glass KingGoogle reviews
- RMK WindowsGoogle reviews
- Modern Resolution Windows & DoorsGoogle reviews
- Luft WindowsGoogle reviews
- Renewal by Andersen Window ReplacementGoogle reviews
- American Vision Windows of ArizonaGoogle reviews
- Lifetime Home RemodelingGoogle reviews
- Desert King WindowsGoogle reviews
- Affordable Windows Plus ExteriorsGoogle reviews
- Big Box Who? Window ReplacementGoogle reviews