5 window replacement contractors Based in Manchester
Window replacement contractors in Manchester range from long-standing shops to 1 newer entrants licensed in the last two years. Every name below comes from the Connecticut license record, not a paid submission.
Licenses checked · Connecticut Department of Consumer Protection
5AIECC climate zone · ENERGY STAR Northern zone
What Manchester's climate means for your window spec
Manchester sits in IECC climate zone 5A, the starting point for any code-minimum window performance here.
ENERGY STAR places Capitol Planning Region in its Northern zone for window certification.
Normal temperatures run 29°F in January and 75°F in July, so the glass package worth paying for in Manchester 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 7.4 mi away.
13median years licensed
The license record behind these listings
The median window license active in Manchester has been on the books for 13 years.
A small slice, 0 of them, sit inside a 90-day window for renewal as of our last check, which is ordinary license-cycle timing rather than a mark against the business.
Match the number on any Manchester listing here against Connecticut's own lookup before you pick up the phone.
Data: Connecticut Department of Consumer Protection license records, checked 2026-09-30.
Manchester window and glazing licenses on file
Listed A to Z by business name. No listed business paid for placement or position.
| Business | Category | License class | License no. | Status | Effective | Expires | ZIP | Official record |
|---|---|---|---|---|---|---|---|---|
| American Windows & Siding LLC | Window and glass contractor | Home Improvement Contractor | 553009 | Active | Dec 9, 1999 | Mar 31, 2027 | 06042 | Verify license |
| Architectural Window Corporation | Window and glass contractor | Home Improvement Contractor | 636305 | Active | Jun 4, 2013 | Mar 31, 2027 | 06040 | Verify license |
| CT Window Replacement LLC | Window and glass contractor | Home Improvement Contractor | 705672 | Active | May 13, 2026 | Mar 31, 2027 | 06042 | Verify license |
| Johns Roofing Siding & Windows LLC | Window and glass contractor | Home Improvement Contractor | 651368 | Active | Apr 11, 2018 | Mar 31, 2027 | 06040 | Verify license |
| Window World Of Connecticut LLC | Window and glass contractor | Home Improvement Contractor | 607051 | Active | Sep 6, 2005 | Mar 31, 2027 | 06042 | Verify license |
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?