Flagstaff, AZ's Highest-Rated Window Installers on Google
Flagstaff hasn't cleared the bar this site needs from a state license file to earn its own license page. So we searched Google Maps for window replacement company listings in Flagstaff, AZ and ranked the ones that qualified by rating and review count. 7 made the cut here.
Google Maps ratings checked · How we rank
5BIECC climate zone · ENERGY STAR Northern zone
What Flagstaff's climate means for your window spec
IECC rates Flagstaff's climate zone as 5B, the starting point for any code-minimum window performance here.
ENERGY STAR places Coconino County in its Northern zone for window certification.
Normal temperatures run 31°F in January and 67°F in July, so the glass package worth paying for in Flagstaff isn't the same one that pencils out two zones over.
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 3.9 mi away.
7 top-rated window replacement companies in and near Flagstaff
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 | Marvin Design Gallery by Mountain West Windows and Doors | 44 | Window installation service | Flagstaff 86001 | Google reviews | |
| 2 | DaBella | 593 | Window installation service | Flagstaff 86001 | Google reviews | |
| 3 | Demers Glass, LLC. | 74 | Window installation service | Flagstaff 86004 | Google reviews | |
| 4 | THE ROCK Glass & Mirror Company | 29 | Window installation service | Flagstaff 86004 | Google reviews | |
| 5 | Clayton Glass Flagstaff | 13 | Window installation service | Flagstaff 86004 | Google reviews | |
| 6 | Twin Peaks Glass | 11 | Window installation service | Flagstaff 86001 | Google reviews | |
| 7 | Flagstaff Windows | 13 | Window supplier | Flagstaff 86001 | 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?