Louisville's Climate Data and Its Top-Rated Window Pros
ENERGY STAR groups Jefferson County into its North-Central zone, the U-factor and SHGC target worth checking against any quote you get in Louisville. Below that spec discussion sit 10 installers, their order set by Google rating, since Louisville 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
4AIECC climate zone · ENERGY STAR North-Central zone
Louisville's climate zone, in plain terms
Jefferson County's normal precipitation runs about 53.1 inches a year, with 15.1 inches of snow, which is a separate question from energy performance but still shapes which window details matter in Louisville.
Moisture and glass performance are handled by different parts of a window's spec sheet, and a Louisville 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 3.5 mi away.
What FEMA's risk data says about Louisville
FEMA scores Jefferson County's winter-weather risk as Relatively High and its flood risk as Relatively High.
Winter risk in Louisville 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 Louisville contractor, not one.
- Hurricane
- Very Low
- Strong wind
- Relatively High
- Winter weather
- Relatively High
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Louisville 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.
Louisville'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.
- Louisville Window CompanyGoogle reviews
- Weber WindowsGoogle reviews
- Windows PlusGoogle reviews
- Gilkey Replacement Window Company - LouisvilleGoogle reviews
- Windows Direct USA of LouisvilleGoogle reviews
- Renewal by Andersen of LouisvilleGoogle reviews
- Pella Windows and Doors Showroom of Louisville, KYGoogle reviews
- South End Glass & Mirror IncGoogle reviews
- Champion Replacement Windows of LouisvilleGoogle reviews
- Window World of KentuckianaGoogle reviews