Top-Rated Window Replacement Companies in Houston, TX
Houston's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 2A sets the energy bar for a Houston window job no matter which kind of list a contractor's name comes from. Checked September 2026.
Google Maps ratings checked · How we rank
2AIECC climate zone · ENERGY STAR Southern zone
Climate and energy performance in Houston
Houston sits in IECC climate zone 2A, the starting point for any code-minimum window performance here.
ENERGY STAR places Harris County in its Southern 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 2.3 mi away.
Google's top window installers serving Houston, TX
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 | I-Window Remodeling | 105 | Window installation service | Houston 77040 | Google reviews | |
| 2 | Reliable Windows | 85 | Window supplier | Houston 77041 | Google reviews | |
| 3 | Longhorn Windows and Roofing | 93 | Window installation service | Houston 77075 | Google reviews | |
| 4 | Window World of Houston | 5,194 | Window installation service | Houston 77099 | Google reviews | |
| 5 | The Window Experts | 290 | Window installation service | Houston 77018 | Google reviews | |
| 6 | Vindov & Glass | 87 | Window installation service | Houston 77092 | Google reviews | |
| 7 | Maverick Windows Houston | 227 | Window installation service | Spring 77388 | Google reviews | |
| 8 | Allstate Windows & Siding | 190 | Window installation service | Houston 77036 | Google reviews | |
| 9 | Mr Windows Houston | 65 | Window installation service | Stafford 77477 | Google reviews | |
| 10 | Pella Windows and Doors Showroom of Houston, TX | 493 | Window installation service | Houston 77064 | 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?