What St. Petersburg Homes Need From a Replacement Window
St. Petersburg sits in IECC climate zone 2A, which sets the energy-performance bar for any window installed here. Below that, a short list of St. Petersburg's longest-licensed window contractors can turn a spec into an actual installed window.
Licenses checked · Florida Department of Business and Professional Regulation
2AIECC climate zone · ENERGY STAR Southern zone
What zone 2A means for a St. Petersburg window
St. Petersburg falls in IECC climate zone 2A, and ENERGY STAR separately groups Pinellas County into its Southern 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 St. Petersburg.
A Tampa-St. Petersburg-Clearwater, FL 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 1.2 mi away.
Storm and weather risk around St. Petersburg
Winter risk in St. Petersburg 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 St. Petersburg contractor, not one.
- Hurricane
- Very High
- Strong wind
- Relatively Moderate
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before St. Petersburg 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 St. Petersburg
Oldest license first, newest last, pulled directly from the state's file. This list isn't for sale.
- Reece Builders/Windows INCVerify license
- Bay Glass & Window INCVerify license
- Stormstrong Windows Doors And More LLCVerify license
- Mitchell Windows & Doors LLCVerify license
- City Windows LLCVerify license
- Ambassador Window & Door LLCVerify license
- Upview WindowsVerify license