Top-Rated Window Replacement Companies in San Ramon, CA
We don't have license data for window and glazing businesses in San Ramon, CA the way we do for some other cities on this site. This page leans on Google Maps instead: 5 businesses, ranked by rating weighted against how many people reviewed them. A strong Google rating still isn't the same thing as a license on file, so ask to see one before you sign anything.
Google Maps ratings checked · How we rank
3BIECC climate zone · ENERGY STAR South-Central zone
Climate and energy performance in San Ramon
San Ramon sits in IECC climate zone 3B, the starting point for any code-minimum window performance here.
ENERGY STAR places Contra Costa County in its South-Central zone for window certification.
Normal temperatures run 48°F in January and 72°F in July, so the glass package worth paying for in San Ramon isn't the same one that pencils out two zones over.
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 7.8 mi away.
Google's top window installers serving San Ramon, 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 | Cal Coast Window & Door | 319 | Window installation service | Pleasanton 94588 | Google reviews | |
| 2 | APW Window Replacement | 49 | Window installation service | Pleasanton 94588 | Google reviews | |
| 3 | Danville Glass Shower & Windows | 26 | Window installation service | Danville 94506 | Google reviews | |
| 4 | AmerPac Replacement Windows & Doors | 5 | Window installation service | Dublin 94568 | Google reviews | |
| 5 | California Window Solutions | 4 | Window supplier | Dublin 94568 | 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?