Top-Rated Window Replacement Companies in Federal Way, WA
Federal Way's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 4C sets the energy bar for a Federal Way window job no matter which kind of list a contractor's name comes from. Checked October 2026.
Google Maps ratings checked · How we rank
4CIECC climate zone · ENERGY STAR Northern zone
What Federal Way's climate means for your window spec
IECC rates Federal Way's climate zone as 4C, the starting point for any code-minimum window performance here.
ENERGY STAR places King County in its Northern zone for window certification.
Normal temperatures run 43°F in January and 67°F in July, so the glass package worth paying for in Federal Way 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 5.7 mi away.
10 top-rated window replacement companies in and near Federal Way
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 | QC Glass | 143 | Window installation service | Not listed | Google reviews | |
| 2 | Rockstar Auto Glass | 579 | Window installation service | Federal Way 98023 | Google reviews | |
| 3 | Signature Window & Door Replacement | 202 | Window installation service | Kent 98032 | Google reviews | |
| 4 | King County Window & Glass | 143 | Window installation service | Federal Way 98003 | Google reviews | |
| 5 | American Eagle Glass | 59 | Window installation service | Auburn 98002 | Google reviews | |
| 6 | Stansell Glass Inc | 22 | Window installation service | Auburn 98001 | Google reviews | |
| 7 | Speedy Glass | 461 | Window installation service | Federal Way 98003 | Google reviews | |
| 8 | Window Nation | 382 | Window installation service | Auburn 98001 | Google reviews | |
| 9 | DaBella | 1,400 | Window installation service | Federal Way 98003 | Google reviews | |
| 10 | America Glass LLC | 10 | Window installation service | Federal Way 98003 | 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?