Google's Top-Rated Window Pros Near Rotterdam, NY
Rotterdam's 5 listings below come from Google Maps rather than a state license file. IECC climate zone 5A sets the energy bar for a Rotterdam window job no matter which kind of list a contractor's name comes from. Checked September 2026.
Google Maps ratings checked · How we rank
5AIECC climate zone · ENERGY STAR Northern zone
What Rotterdam's climate means for your window spec
Albany-Schenectady-Troy, NY piles up about 6,357 heating degree days in a normal year, against 721 on the cooling side of the ledger.
That's the load an ENERGY STAR-rated window in the Northern zone is built to handle.
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 8.1 mi away.
5 top-rated window replacement companies in and near Rotterdam
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 | Renewal by Andersen of Eastern NY | 1,344 | Window installation service | Schenectady 12306 | Google reviews | |
| 2 | Herman Exterior Homes | 123 | Window installation service | Schenectady 12304 | Google reviews | |
| 3 | J&D Windows and Doors General Contracting, LLC. | 60 | Window installation service | Not listed | Google reviews | |
| 4 | Turnpike Glass | 38 | Window installation service | Rotterdam 12306 | Google reviews | |
| 5 | Window Town of Capital District | 63 | Window installation service | Schenectady 12306 | 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?