Google's Top-Rated Window Pros Near Monrovia, CA
Monrovia's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 3B sets the energy bar for a Monrovia 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
What Monrovia's climate means for your window spec
IECC rates Monrovia's climate zone as 3B, the starting point for any code-minimum window performance here.
ENERGY STAR places Los Angeles 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 4.4 mi away.
10 top-rated window replacement companies in and near Monrovia
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 | Doctor Auto Glass | 334 | Window installation service | Arcadia 91006 | Google reviews | |
| 2 | Irwindale Windows Co | 11 | Window supplier | Baldwin Park 91706 | Google reviews | |
| 3 | Coast Life Construction Inc | 22 | Window installation service | Arcadia 91007 | Google reviews | |
| 4 | Animas Glass | 3 | Window installation service | Duarte 91010 | Google reviews | |
| 5 | R&B GLASS INC | 3 | Window installation service | Monrovia 91016 | Google reviews | |
| 6 | Arcadia Sash & Door Inc | 20 | Window installation service | Arcadia 91006 | Google reviews | |
| 7 | Vista Window Manufacturing, Inc. | 69 | Window installation service | Monrovia 91016 | Google reviews | |
| 8 | Slater Glass & Mirror | 9 | Window installation service | Arcadia 91006 | Google reviews | |
| 9 | The Door & Window Store | 8 | Window installation service | Arcadia 91006 | Google reviews | |
| 10 | Sierra Glass And Mirror Inc | 17 | Window installation service | Sierra Madre 91024 | 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?