New Haven, CT's Highest-Rated Window Installers on Google
New Haven's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 5A sets the energy bar for a New Haven window job no matter which kind of list a contractor's name comes from. Checked October 2026.
Google Maps ratings checked · How we rank
5AIECC climate zone · ENERGY STAR Northern zone
Climate and energy performance in New Haven
New Haven, CT piles up about 5,455 heating degree days in a normal year, against 765 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 3.8 mi away.
Google's top window installers serving New Haven, CT
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 | Pro Exteriors LLC | 454 | Window installation service | New Haven 06511 | Google reviews | |
| 2 | Renewal by Andersen - Branford | 256 | Window installation service | Branford 06405 | Google reviews | |
| 3 | SEGUI BROTHERS GLASS LLC | 91 | Window installation service | New Haven 06513 | Google reviews | |
| 4 | WindowRama | 13 | Window supplier | Branford 06405 | Google reviews | |
| 5 | Window Wonders | 21 | Window supplier | Hamden 06517 | Google reviews | |
| 6 | Malpica Home Improvement | 41 | Window installation service | New Haven 06513 | Google reviews | |
| 7 | OpenSky Window LLC | 5 | Window supplier | New Haven 06513 | Google reviews | |
| 8 | The Window Source of New Haven and Fairfield Counties | 3 | Window installation service | Hamden 06517 | Google reviews | |
| 9 | WindowRama | 61 | Window installation service | Orange 06477 | Google reviews | |
| 10 | Anderson Glass | 20 | Window installation service | West Haven 06516 | 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?