Farragut, TN Climate Specs + Top-Rated Window Installers
ENERGY STAR groups Loudon County into its North-Central zone, the U-factor and SHGC target worth checking against any quote you get in Farragut. Below that spec discussion sit 8 installers, their order set by Google rating, since Farragut 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
Farragut's climate zone, in plain terms
Farragut falls in IECC climate zone 4A, and ENERGY STAR separately groups Loudon County 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 Farragut.
A Knoxville, TN 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 7.7 mi away.
What FEMA's risk data says about Farragut
FEMA rates Loudon County's hurricane risk as Very Low and its wind risk as Relatively Moderate.
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 Farragut home.
Ask specifically about design pressure and impact rating for Farragut, not just energy performance, if either risk rating comes back on the high side.
- Hurricane
- Very Low
- Strong wind
- Relatively Moderate
- 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 Farragut 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.
Farragut'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.
- Smith Roofing & ExteriorsGoogle reviews
- Window WorksGoogle reviews
- CRS ExteriorsGoogle reviews
- Window Depot KnoxvilleGoogle reviews
- Knoxville Window and DoorGoogle reviews
- American HomeGoogle reviews
- Hiwassee Window And DoorGoogle reviews
- Pella Windows and Doors Showroom of Knoxville, TNGoogle reviews