Top-Rated Window Replacement Companies in Washington, DC
Washington's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 4A sets the energy bar for a Washington window job no matter which kind of list a contractor's name comes from. Checked October 2026.
Google Maps ratings checked · How we rank
4AIECC climate zone · ENERGY STAR North-Central zone
What Washington's climate means for your window spec
District of Columbia sees about 45.6 inches of precipitation and 9.7 inches of snow in a normal year.
Weather at that level is one more reason the flashing and sill pan under a Washington window matter as much as the glass sitting in it.
So ask any Washington contractor how they handle both, not just which brand they carry.
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 2.6 mi away.
10 top-rated window replacement companies in and near Washington
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 | Old Town Glass And Mirror LLC | 396 | Window installation service | Alexandria 22304 | Google reviews | |
| 2 | Lumina Glass & Windows | 107 | Window installation service | Washington 20004 | Google reviews | |
| 3 | Kennedy Glass in DC | 382 | Window installation service | Washington 20001 | Google reviews | |
| 4 | Pro Glass Repair | 74 | Window installation service | Washington 20037 | Google reviews | |
| 5 | AA Window & Glass Repair | 116 | Window installation service | Washington 20036 | Google reviews | |
| 6 | Mission Exteriors | 25 | Window installation service | Washington 20008 | Google reviews | |
| 7 | Supreme Window | 112 | Window installation service | Hyattsville 20781 | Google reviews | |
| 8 | Window Replacement DC - Professional Window Installation, & Door Installation | 24 | Window installation service | Not listed | Google reviews | |
| 9 | BGV Construction & Windows LLC | 15 | Window installation service | Washington 20009 | Google reviews | |
| 10 | Thompson Creek Window Company Lanham | 3,367 | Window installation service | Lanham 20706 | 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?