Window Climate Specs for Alexandria, VA
Alexandria sits in IECC climate zone 4A, which sets the energy-performance bar for any window installed here. Below that, a short list of Alexandria's longest-licensed window contractors can turn a spec into an actual installed window.
Licenses checked · Virginia Department of Professional and Occupational Regulation, Board for Contractors
4AIECC climate zone · ENERGY STAR North-Central zone
Alexandria's climate zone, in plain terms
Alexandria city's normal precipitation runs about 41.8 inches a year, with 13.7 inches of snow, which is a separate question from energy performance but still shapes which window details matter in Alexandria.
Moisture and glass performance are handled by different parts of a window's spec sheet, and a Alexandria buyer benefits from checking both instead of assuming one implies the other.
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 3.3 mi away.
What FEMA's risk data says about Alexandria
Alexandria city's hail risk sits at Relatively Low and its wildfire risk at Very Low, according to FEMA's National Risk Index.
Hail risk matters for glass and screen durability in Alexandria; 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 Alexandria installer before you settle on a product line.
- Hurricane
- Relatively Low
- Strong wind
- Relatively High
- 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 Alexandria 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.
Alexandria's longest-licensed window installers
Oldest license first, newest last, pulled directly from the state's file. This list isn't for sale.
- Nation S Choice Windows IncorporatedVerify license
- Window Universe LLCVerify license
- Master Panels & Windows LLCVerify license
- Rosemont GlassVerify license
- Cbe Glass LLCVerify license