Ronkonkoma's Climate Data and Its Top-Rated Window Pros
ENERGY STAR groups Suffolk County into its North-Central zone, the U-factor and SHGC target worth checking against any quote you get in Ronkonkoma. Below that spec discussion sit 10 installers, their order set by Google rating, since Ronkonkoma 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
Ronkonkoma's climate zone, in plain terms
Suffolk County's normal precipitation runs about 46.0 inches a year, with 31.8 inches of snow, which is a separate question from energy performance but still shapes which window details matter in Ronkonkoma.
Moisture and glass performance are handled by different parts of a window's spec sheet, and a Ronkonkoma 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 1.4 mi away.
What FEMA's risk data says about Ronkonkoma
FEMA scores Suffolk County's winter-weather risk as Very High and its flood risk as Relatively High.
Winter risk in Ronkonkoma 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 Ronkonkoma contractor, not one.
- Hurricane
- Relatively High
- Strong wind
- Relatively High
- Winter weather
- Very High
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
Guides to finish before Ronkonkoma 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.
Ronkonkoma'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.
- Long Island Roofing and SidingGoogle reviews
- King Quality Roofing and SidingGoogle reviews
- C & L Aluminum and GlassGoogle reviews
- JAGG Roofing Siding and WindowsGoogle reviews
- Infinity Replacement by MarvinGoogle reviews
- Coast 2 Coast Roofing & ExteriorsGoogle reviews
- EcoView Windows of Long IslandGoogle reviews
- Top 1 home improvementsGoogle reviews
- Saint James Windows and DoorsGoogle reviews
- Long Island Construction .comGoogle reviews