Google's Top-Rated Window Pros Near Ronkonkoma, NY
Ronkonkoma's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 4A sets the energy bar for a Ronkonkoma window job no matter which kind of list a contractor's name comes from. Checked September 2026.
Google Maps ratings checked · How we rank
4AIECC climate zone · ENERGY STAR North-Central zone
Climate and energy performance in Ronkonkoma
Suffolk County sees about 46.0 inches of precipitation and 31.8 inches of snow in a normal year.
Weather at that level is one more reason the flashing and sill pan under a Ronkonkoma window matter as much as the glass sitting in it.
So ask any Ronkonkoma contractor how they handle both, not just which brand they carry.
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.
Google's top window installers serving Ronkonkoma, NY
Ranked by Google rating weighted against how many people left one, so a perfect score from a handful of reviewers never outranks a strong average built on hundreds. That ranking is not a license check; call the state directly and ask for the contractor's license or registration number.
| Rank | Business | Google rating | Reviews | Category | Area | Google Maps listing |
|---|---|---|---|---|---|---|
| 1 | Long Island Roofing and Siding | 750 | Window installation service | Ronkonkoma 11779 | Google reviews | |
| 2 | King Quality Roofing and Siding | 3,067 | Window installation service | Bohemia 11716 | Google reviews | |
| 3 | C & L Aluminum and Glass | 87 | Window installation service | Bohemia 11716 | Google reviews | |
| 4 | JAGG Roofing Siding and Windows | 22 | Window installation service | Central Islip 11722 | Google reviews | |
| 5 | Infinity Replacement by Marvin | 72 | Window installation service | Ronkonkoma 11779 | Google reviews | |
| 6 | Coast 2 Coast Roofing & Exteriors | 19 | Window installation service | Bohemia 11716 | Google reviews | |
| 7 | EcoView Windows of Long Island | 116 | Window installation service | Islandia 11749 | Google reviews | |
| 8 | Top 1 home improvements | 21 | Window installation service | Ronkonkoma 11779 | Google reviews | |
| 9 | Saint James Windows and Doors | 12 | Window installation service | St James 11780 | Google reviews | |
| 10 | Long Island Construction .com | 55 | Window installation service | Holbrook 11741 | Google reviews |
Questions to ask before you sign
- How long have you held your state license, and can I see the number?
- Is this a full-frame replacement or an insert into my existing frame, and why that one?
- Who pulls the permit, and does this change trigger an egress check on a bedroom window?
- What flashing and sill pan will you use, and in what order do you install them?
- If my home was built before 1978, is your crew lead-safe certified for this job?
- What's the completion date in writing, and what happens if the schedule slips?