Top-Rated Window Replacement Companies in Lehi, UT
Lehi's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 5B sets the energy bar for a Lehi window job no matter which kind of list a contractor's name comes from. Checked October 2026.
Google Maps ratings checked · How we rank
5BIECC climate zone · ENERGY STAR Northern zone
What Lehi's climate means for your window spec
Utah County sees about 13.1 inches of precipitation and 26.3 inches of snow in a normal year.
Weather at that level is one more reason the flashing and sill pan under a Lehi window matter as much as the glass sitting in it.
So ask any Lehi 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.
10 top-rated window replacement companies in and near Lehi
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 | Westlake Window Glass Replacement | 403 | Window installation service | Eagle Mountain 84005 | Google reviews | |
| 2 | HomeStar Windows & Doors | 267 | Window installation service | Draper 84020 | Google reviews | |
| 3 | Performance Windows Pleasant Grove | 749 | Window installation service | Pleasant Grove 84062 | Google reviews | |
| 4 | Glass Doctor of Utah County | 524 | Window installation service | American Fork 84003 | Google reviews | |
| 5 | Rocky Mountain Siding | 23 | Window installation service | Lehi 84043 | Google reviews | |
| 6 | Optimum Windows and Doors | 22 | Window installation service | American Fork 84003 | Google reviews | |
| 7 | Elite Windows - Utah County | 87 | Window installation service | Pleasant Grove 84062 | Google reviews | |
| 8 | Mountain States Windows & Siding | 56 | Window installation service | Lehi 84043 | Google reviews | |
| 9 | Lehi Window Replacement Co | 8 | Window installation service | Lehi 84043 | Google reviews | |
| 10 | Xtreme Screens, LLC | 7 | Window installation service | Lehi 84043 | 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?