Mercer Island, WA's Highest-Rated Window Installers on Google
We don't have license data for window and glazing businesses in Mercer Island, WA the way we do for some other cities on this site. This page leans on Google Maps instead: 6 businesses, ranked by rating weighted against how many people reviewed them. A strong Google rating still isn't the same thing as a license on file, so ask to see one before you sign anything.
Google Maps ratings checked · How we rank
4CIECC climate zone · ENERGY STAR Northern zone
Climate and energy performance in Mercer Island
Seattle-Tacoma-Bellevue, WA piles up about 4,341 heating degree days in a normal year, against 282 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 4 mi away.
Google's top window installers serving Mercer Island, WA
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 | Sound View Window & Door Inc | 110 | Window installation service | Bellevue 98005 | Google reviews | |
| 2 | Einar Johanson Window & Door | 17 | Window installation service | Bellevue 98004 | Google reviews | |
| 3 | Apex Energy Solutions | 193 | Window installation service | Seattle 98118 | Google reviews | |
| 4 | Elevate Windows | 66 | Window supplier | Bellevue 98005 | Google reviews | |
| 5 | Roxie Glass Inc. | 77 | Window installation service | Bellevue 98005 | Google reviews | |
| 6 | Everlast Window and Door | 17 | Window installation service | Seattle 98118 | 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?