Top-Rated Window Replacement Companies in Flower Mound, TX
Flower Mound's 9 listings below come from Google Maps rather than a state license file. IECC climate zone 3A sets the energy bar for a Flower Mound window job no matter which kind of list a contractor's name comes from. Checked September 2026.
Google Maps ratings checked · How we rank
3AIECC climate zone · ENERGY STAR South-Central zone
What Flower Mound's climate means for your window spec
Flower Mound sits in IECC climate zone 3A, the starting point for any code-minimum window performance here.
ENERGY STAR places Denton County in its South-Central zone for window certification.
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 6.4 mi away.
9 top-rated window replacement companies in and near Flower Mound
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 | Clarity Windows and Doors | 584 | Window installation service | Coppell 75019 | Google reviews | |
| 2 | Affordable Siding & Windows | 166 | Window installation service | Lewisville 75077 | Google reviews | |
| 3 | Texas Windows | 148 | Window installation service | Lewisville 75067 | Google reviews | |
| 4 | Windows of Texas, Inc. | 22 | Window installation service | Grapevine 76051 | Google reviews | |
| 5 | EcoView Windows and Doors Flower Mound | 5 | Window installation service | Flower Mound 75022 | Google reviews | |
| 6 | Jenco Windows | 4 | Window installation service | Flower Mound 75022 | Google reviews | |
| 7 | LD Lewisville Glass | 192 | Window installation service | Lewisville 75067 | Google reviews | |
| 8 | Hightower Company | 8 | Window installation service | Flower Mound 75028 | Google reviews | |
| 9 | MI Windows and Doors | 62 | Window supplier | Flower Mound 75028 | 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?