Top-Rated Window Replacement Companies in Lake Zurich, IL
Lake Zurich's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 5A sets the energy bar for a Lake Zurich 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
Climate and energy performance in Lake Zurich
Lake County sees about 38.5 inches of precipitation and 43.1 inches of snow in a normal year.
Weather at that level is one more reason the flashing and sill pan under a Lake Zurich window matter as much as the glass sitting in it.
So ask any Lake Zurich 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 4.2 mi away.
Google's top window installers serving Lake Zurich, IL
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 | G&C Glass, Mirror and Construction | 270 | Window installation service | Lake Zurich 60047 | Google reviews | |
| 2 | HARRIS ROOFING, SIDING, WINDOWS & DOORS | 126 | Window installation service | Barrington 60010 | Google reviews | |
| 3 | Argo Glass & Windows - Window Repair & Glass Replacement | 1,300 | Window installation service | Palatine 60067 | Google reviews | |
| 4 | Olson Windows, Doors, Siding & Roofing | 253 | Window installation service | Barrington 60010 | Google reviews | |
| 5 | WeDo Repair Siding, Gutter & Roof | 21 | Window installation service | Lake Zurich 60047 | Google reviews | |
| 6 | Friendly Windows | 40 | Window installation service | Barrington 60010 | Google reviews | |
| 7 | Pro Lux Windows Replacement | 16 | Window installation service | Deer Park 60010 | Google reviews | |
| 8 | HP Windows And Doors | 14 | Window installation service | Barrington 60010 | Google reviews | |
| 9 | UltraPAC Window Replacement | 10 | Window installation service | Lake Zurich 60047 | Google reviews | |
| 10 | Muller Exteriors Inc. | 116 | Window installation service | Lake Zurich 60047 | 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?