Top-Rated Window Replacement Companies in Waukesha, WI
Waukesha's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 5A sets the energy bar for a Waukesha 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
What Waukesha's climate means for your window spec
Waukesha County sees about 36.0 inches of precipitation and 36.9 inches of snow in a normal year.
Weather at that level is one more reason the flashing and sill pan under a Waukesha window matter as much as the glass sitting in it.
So ask any Waukesha 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 0.3 mi away.
10 top-rated window replacement companies in and near Waukesha
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 | Window Depot USA | Waukesha Showroom | 1,274 | Window installation service | Waukesha 53189 | Google reviews | |
| 2 | GAES Window Repairs: Residential & Commercial | 238 | Window installation service | Waukesha 53186 | Google reviews | |
| 3 | Window Depot USA | Waukesha Walmart Showroom | 163 | Window installation service | Waukesha 53189 | Google reviews | |
| 4 | HomeSealed Exteriors, LLC | 426 | Window installation service | New Berlin 53151 | Google reviews | |
| 5 | Argo Door & Window: Repair and Replacement | 333 | Window installation service | Waukesha 53186 | Google reviews | |
| 6 | Infinity Exteriors | 2,508 | Window installation service | New Berlin 53151 | Google reviews | |
| 7 | Renewal by Andersen of Milwaukee Waukesha Showroom | 1,644 | Window installation service | Waukesha 53186 | Google reviews | |
| 8 | Siding Unlimited, LLC | 224 | Window installation service | Waukesha 53186 | Google reviews | |
| 9 | Ideal Windows & Doors - Window Installation Service & Siding Contractor | 64 | Window installation service | Big Bend 53103 | Google reviews | |
| 10 | Pella Window and Door Showroom of Brookfield, WI | 1,526 | Window installation service | Brookfield 53045 | 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?