Westminster, CO's Highest-Rated Window Installers on Google
Westminster's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 5B sets the energy bar for a Westminster 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 Westminster's climate means for your window spec
Jefferson County sees about 14.5 inches of precipitation and 44.8 inches of snow in a normal year.
Weather at that level is one more reason the flashing and sill pan under a Westminster window matter as much as the glass sitting in it.
So ask any Westminster 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 2.9 mi away.
10 top-rated window replacement companies in and near Westminster
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 | The Glass Guru | 385 | Window installation service | Arvada 80003 | Google reviews | |
| 2 | Egress, Inc. | 136 | Window installation service | Denver 80260 | Google reviews | |
| 3 | K&H Home Solutions | 631 | Window installation service | Arvada 80002 | Google reviews | |
| 4 | True View Windows & Glass | 565 | Window installation service | Westminster 80030 | Google reviews | |
| 5 | Bright Side Windows & Doors | 54 | Window installation service | Wheat Ridge 80033 | Google reviews | |
| 6 | Tru Quality Glass | 30 | Window installation service | Not listed | Google reviews | |
| 7 | Performance Windows Denver | 453 | Window installation service | Broomfield 80020 | Google reviews | |
| 8 | HARDY Window & Door | 18 | Window installation service | Westminster 80031 | Google reviews | |
| 9 | KV Windows Inc. | 115 | Window installation service | Westminster 80030 | Google reviews | |
| 10 | WINDOW WELL GUARDIAN | 32 | Window installation service | Northglenn 80234 | 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?