157 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Harris Hill: Renewal By Andersen of Western New York, CR Score 63/100; 4.8★ from 1,066 Google reviews; open Saturdays until 2 PM.
Best for emergencies (open 24/7): Wonder Windows Buffalo, posts 24/7 hours; ranked #2 of 157.
Most-reviewed: Braymiller Builders of WNY Inc., 1,065 Google reviews at 4.9★, the most of 157 ranked after Renewal By Andersen of Western New York; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
157 Harris Hill window installers are ranked here by CR Score, from ten published factors. 21 are open 24/7, 74 open Saturdays and 35 open Sundays, based on posted hours. The median Google rating is 4.9★ across 157 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Renewal By Andersen of Western New York | 63 | 4.8★ (1,066) | Depew, 5 mi away | Sat | Overall |
| 2 | Wonder Windows Buffalo | 62 | 4.5★ (208) | Buffalo, 5 mi away | 24/7 | Emergencies |
| 3 | Paramount Windows & Doors | 62 | 4.9★ (95) | Buffalo, 9 mi away | 24/7 | — |
| 4 | Braymiller Builders of WNY Inc. | 62 | 4.9★ (1,065) | Hamburg, 19 mi away | Sat | Most reviews |
| 5 | The Window Source of WNY | 61 | 4.9★ (53) | Buffalo, 7 mi away | 24/7 | — |
| 6 | Express Windows | 60 | 4.7★ (318) | Buffalo, 10 mi away | Sat · Evenings | — |
| 7 | Big L Windows & Doors | 60 | 4.7★ (235) | Cheektowaga, 7 mi away | Sat | — |
| 8 | Buffalo Glass Block | 60 | 4.9★ (468) | Buffalo, 11 mi away | — | — |
| 9 | William C Rott & Son Inc | 59 | 4.2★ (120) | Tonawanda, 10 mi away | 24/7 | — |
| 10 | Graves Brothers Home Improvement | 59 | 4.7★ (494) | Williamsville, 1 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 review volume: 4.8★ from 1,066 Google reviews, the most in Harris Hill.
Based in Buffalo, 5 mi away
Ranked #2 because of its Google rating and trade focus: 4.5★ from 208 Google reviews, listed on Google as “Window installation service”.
Based in Buffalo, 9 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 95 Google reviews, listed on Google as “Window installation service”.
Based in Hamburg, 19 mi away
Ranked #4 because of its Google rating and review volume: 4.9★ from 1,065 Google reviews.
Based in Buffalo, 7 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 53 Google reviews, listed on Google as “Window installation service”.
Based in Buffalo, 10 mi away
Ranked #6 because of its Google rating and trade focus: 4.7★ from 318 Google reviews, listed on Google as “Window installation service”.
Based in Cheektowaga, 7 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 235 Google reviews, listed on Google as “Window installation service”.
Based in Buffalo, 11 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 468 Google reviews, listed on Google as “Window installation service”.
Based in Tonawanda, 10 mi away
Ranked #9 because of its Google rating and trade focus: 4.2★ from 120 Google reviews, listed on Google as “Window installation service”.
Based in Williamsville, 1 mi away
Ranked #10 because of its Google rating and review volume: 4.7★ from 494 Google reviews.
Based in Buffalo, 7 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 76 Google reviews, listed on Google as “Window installation service”.
Based in Tonawanda, 10 mi away
Ranked #12 because of its Google rating and trade focus: 4.3★ from 438 Google reviews, listed on Google as “Window installation service”.
Based in Williamsville, 2 mi away
Ranked #13 because of its Google rating and review volume: 4.9★ from 685 Google reviews.
Based in Buffalo, 9 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 170 Google reviews, listed on Google as “Window installation service”.
Based in North Tonawanda, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.9★ from 205 Google reviews, listed on Google as “Window installation service”.
Based in Buffalo, 9 mi away
Ranked #16 because of its Google rating and review volume: 5.0★ from 177 Google reviews.
Based in St. Catharines, 32 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 617 Google reviews, listed on Google as “Window installation service”.
Based in Fort Erie, 7 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Window installation service”.
Based in Fort Erie, 12 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 47 Google reviews, listed on Google as “Window installation service”.
Based in Buffalo, 9 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 134 Google reviews.
Based in Niagara Falls, 25 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 197 Google reviews, listed on Google as “Window installation service”.
Based in Buffalo, 2 mi away
Ranked #22 because of its Google rating and trade focus: 4.5★ from 115 Google reviews, listed on Google as “Window installation service”.
Based in Welland, 30 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 280 Google reviews, listed on Google as “Window installation service”.
Based in Cheektowaga, 8 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “Window installation service”.
Based in Norfolk County, 29 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 105 Google reviews, listed on Google as “Window installation service”.
Typical prices in USD, adjusted for New York with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,730 | $7,980 | $12,860 | Per project (several windows): typical range of customer-reported projects. US national range × 1.09 Middle Atlantic factor (2025 Cost vs. Value Report) | October 2026 |
We scored 157 Harris Hill 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 Harris Hill 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 |