906 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Cos Cob: Renewal by Andersen, CR Score 63/100; 4.8★ from 890 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Egress Pros - Egress Window Installation Company, posts 24/7 hours; ranked #6 of 906.
Most-reviewed: Renewal by Andersen of Long Island, 3,081 Google reviews at 4.9★, the most of 906 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
906 Cos Cob window installers are ranked here by CR Score, from ten published factors. 132 are open 24/7, 628 open Saturdays and 310 open Sundays, based on posted hours. The median Google rating is 4.9★ across 906 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Renewal by Andersen | 63 | 4.8★ (890) | Stamford, 2 mi away | Sat · Sun · Evenings | Overall |
| 2 | Renewal by Andersen of Long Island | 63 | 4.9★ (3,081) | Farmingdale, 22 mi away | Sat · Sun · Evenings | Most reviews |
| 3 | Thermo-Seal Windows, Siding And Roofing | 61 | 5.0★ (139) | Rye, 7 mi away | Sat · Sun · Evenings | — |
| 4 | Prestige Window Works Repair & Installation | 61 | 4.9★ (535) | Manhasset, 18 mi away | Sat · Sun · Evenings | — |
| 5 | Prestige Window and Door Repair Connecticut | 60 | 4.9★ (91) | Greenwich, 3 mi away | Sat · Sun · Evenings | — |
| 6 | Egress Pros - Egress Window Installation Company | 60 | 5.0★ (29) | Stamford, 3 mi away | 24/7 | Emergencies |
| 7 | Egress Pros | 60 | 4.9★ (630) | West Babylon, 24 mi away | 24/7 | — |
| 8 | Window Solutions Plus | 60 | 5.0★ (224) | Ridgefield, 18 mi away | Sat · Sun · Evenings | — |
| 9 | Windows By Toll | 60 | 4.8★ (86) | Stamford, 2 mi away | Sat · Sun · Evenings | — |
| 10 | Window Doctor Ny | 60 | 5.0★ (106) | Floral Park, 22 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 890 Google reviews, listed on Google as “Window installation service”.
Based in Farmingdale, 22 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 3,081 Google reviews, listed on Google as “Window installation service”.
Based in Rye, 7 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 139 Google reviews, listed on Google as “Window installation service”.
Based in Manhasset, 18 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 535 Google reviews, listed on Google as “Window installation service”.
Based in Greenwich, 3 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 91 Google reviews, listed on Google as “Window installation service”.
Based in Stamford, 3 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Window installation service”.
Based in West Babylon, 24 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 630 Google reviews, listed on Google as “Window installation service”.
Based in Ridgefield, 18 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 224 Google reviews, listed on Google as “Window installation service”.
Based in Stamford, 2 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 86 Google reviews, listed on Google as “Window installation service”.
Based in Floral Park, 22 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “Window installation service”.
Based in Greenburgh, 6 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Window installation service”.
Based in Melville, 20 mi away
Ranked #12 because of its Google rating and trade focus: 4.7★ from 154 Google reviews, listed on Google as “Window installation service”.
Based in Stratford, 26 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 1,222 Google reviews, listed on Google as “Window installation service”.
Based in Hauppauge, 24 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 175 Google reviews, listed on Google as “Window installation service”.
Based in Darien, 8 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 126 Google reviews, listed on Google as “Window installation service”.
Based in Manhattan, 30 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 412 Google reviews, listed on Google as “Window installation service”.
Based in Stamford, 4 mi away
Ranked #17 because of its Google rating and review volume: 4.9★ from 560 Google reviews.
Based in Brooklyn, 35 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 175 Google reviews, listed on Google as “Window installation service”.
Based in Stamford, 4 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 97 Google reviews, listed on Google as “Window installation service”.
Based in Astoria, 26 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Window installation service”.
Based in East Elmhurst, 24 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 160 Google reviews, listed on Google as “Window installation service”.
Based in North Stamford, 19 mi away
Ranked #22 because of its Google rating and trade focus: 4.9★ from 103 Google reviews, listed on Google as “Window installation service”.
Based in Brooklyn, 28 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 704 Google reviews, listed on Google as “Window installation service”.
Based in Albertson, 19 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 279 Google reviews, listed on Google as “Window installation service”.
Based in Farmingdale, 22 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 692 Google reviews, listed on Google as “Window installation service”.
Typical prices in USD, adjusted for Connecticut with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,410 | $7,300 | $11,760 | Per project (several windows): typical range of customer-reported projects. US national range × 0.99 New England factor (2025 Cost vs. Value Report) | October 2026 |
We scored 906 Cos Cob window installers on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Cos Cob data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |