Top-Rated Window Replacement Companies in Covina, CA
Covina's 8 listings below come from Google Maps rather than a state license file. IECC climate zone 3B sets the energy bar for a Covina window job no matter which kind of list a contractor's name comes from. Checked October 2026.
Google Maps ratings checked · How we rank
3BIECC climate zone · ENERGY STAR South-Central zone
Climate and energy performance in Covina
That's the load an ENERGY STAR-rated window in the South-Central zone is built to handle.
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 0.1 mi away.
Google's top window installers serving Covina, CA
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 | Hometime Windows & Doors | 226 | Window installation service | Glendora 91740 | Google reviews | |
| 2 | Mancino Door & Window, Inc. | 127 | Window installation service | Glendora 91740 | Google reviews | |
| 3 | The Sliding Door Repair Company West Covina | 25 | Window installation service | West Covina 91790 | Google reviews | |
| 4 | Screen Weaver, Inc. | 19 | Window installation service | Covina 91723 | Google reviews | |
| 5 | Meagi Windows & Doors, Inc. | 15 | Window installation service | La Puente 91744 | Google reviews | |
| 6 | One Stop Glass | 6 | Window supplier | Covina 91722 | Google reviews | |
| 7 | American Window Co - Showroom | 3 | Window supplier | Covina 91724 | Google reviews | |
| 8 | Branson Company DBA Branson Sash & Door | 13 | Window installation service | Covina 91723 | 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?