Dallas's Climate Data and Its Top-Rated Window Pros
ENERGY STAR groups Dallas County into its Southern zone, the U-factor and SHGC target worth checking against any quote you get in Dallas. Below that spec discussion sit 10 installers, their order set by Google rating, since Dallas 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
2AIECC climate zone · ENERGY STAR Southern zone
What zone 2A means for a Dallas window
Dallas-Fort Worth-Arlington, TX runs a January average near 48°F and climbs to about 87°F by July, a swing that adds up to roughly 1,992 heating degree days most winters, with 3,125 on the summer cooling side of the ledger.
That load is the actual argument for paying up for a better U-factor in Dallas, separate from anything a brochure claims.
Zone 2A's requirement is the floor; Dallas'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 6.6 mi away.
Storm and weather risk around Dallas
Dallas County's hail risk sits at Very High and its wildfire risk at Relatively Low, according to FEMA's National Risk Index.
Hail risk matters for glass and screen durability in Dallas; 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 Dallas installer before you settle on a product line.
- Hurricane
- Relatively Low
- Strong wind
- Very High
- Winter weather
- Very High
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Dallas 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.
10 top-rated window installers near Dallas, TX
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.
- Silverback WindowsGoogle reviews
- Zen Windows DallasGoogle reviews
- Wow Windows & Glass, LLCGoogle reviews
- Clarity Windows and DoorsGoogle reviews
- Energy One Windows of Dallas/Ft. WorthGoogle reviews
- The Window Source of DFWGoogle reviews
- Foster Exteriors Window CompanyGoogle reviews
- Sol Solutions - Custom Windows and Doors Estimate - Dallas, TXGoogle reviews
- Metroplex Windows & GlassGoogle reviews
- Maverick WindowsGoogle reviews