Top-Rated Window Replacement Companies in Cary, NC
Cary's 10 listings below come from Google Maps rather than a state license file. IECC climate zone 3A sets the energy bar for a Cary 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
Climate and energy performance in Cary
Cary sits in IECC climate zone 3A, the starting point for any code-minimum window performance here.
ENERGY STAR places Wake County in its South-Central zone for window certification.
Normal temperatures run 41°F in January and 79°F in July, so the glass package worth paying for in Cary 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 2.8 mi away.
Google's top window installers serving Cary, NC
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 | Kelly Window and Door, Inc. | 468 | Window installation service | Cary 27511 | Google reviews | |
| 2 | Raleigh Windows and Siding, LLC | 320 | Window installation service | Raleigh 27607 | Google reviews | |
| 3 | Apex Energy Solutions - Window Replacement & Entry Doors - Raleigh | 264 | Window installation service | Cary 27511 | Google reviews | |
| 4 | Energy One Windows of Raleigh NC | 207 | Window installation service | Cary 27511 | Google reviews | |
| 5 | APL Glass Windows and More | 59 | Window installation service | Apex 27539 | Google reviews | |
| 6 | City Mirror & Glass, Inc. | 116 | Window installation service | Cary 27511 | Google reviews | |
| 7 | My Guys Remodeling - Replacement Windows, Hardie Siding & Exterior Doors | 106 | Window installation service | Apex 27539 | Google reviews | |
| 8 | Windows, Doors & More, Inc | 83 | Window installation service | Raleigh 27612 | Google reviews | |
| 9 | Window Works Co. | 77 | Window installation service | Cary 27518 | Google reviews | |
| 10 | Window World of Raleigh | 897 | Window installation service | Apex 27502 | 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?