Window Climate Specs for Fredericksburg, VA
Fredericksburg sits in IECC climate zone 4A, which sets the energy-performance bar for any window installed here. Below that, a short list of Fredericksburg'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
What zone 4A means for a Fredericksburg window
Fredericksburg falls in IECC climate zone 4A, and ENERGY STAR separately groups Fredericksburg city into its North-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 Fredericksburg.
A Washington-Arlington-Alexandria, DC-VA-MD-WV 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 2.1 mi away.
Storm and weather risk around Fredericksburg
FEMA scores Fredericksburg city's winter-weather risk as Very Low and its flood risk as Very Low.
Winter risk in Fredericksburg weighs on U-factor and condensation resistance; flood risk weighs more on sill height and drainage detailing than on the glass package.
Treat these as two separate conversations with a Fredericksburg contractor, not one.
- Hurricane
- Very Low
- Strong wind
- Relatively Low
- Winter weather
- Very Low
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Fredericksburg 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 Fredericksburg
Oldest license first, newest last, pulled directly from the state's file. This list isn't for sale.
- C S Martin Window & Door CompanyVerify license
- Window World Of Fredericksburg INCVerify license
- Windows Unlimited INCVerify license
- Window Worx LLCVerify license
- C & A Windows LLCVerify license