124 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in South Beloit: Feldco Windows, Siding, Doors & Roofing of Rockford, CR Score 62/100; 4.7★ from 417 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Aurum Contracting, posts 24/7 hours; ranked #4 of 124.
Most-reviewed: Pella Window and Door Office/Warehouse of Rockford, 724 Google reviews at 4.6★, the most of 124 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
124 South Beloit window installers are ranked here by CR Score, from ten published factors. 13 are open 24/7, 69 open Saturdays and 29 open Sundays, based on posted hours. The median Google rating is 4.8★ across 124 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Feldco Windows, Siding, Doors & Roofing of Rockford | 62 | 4.7★ (417) | Rockford, 16 mi away | Sat · Sun · Evenings | Overall |
| 2 | Elite Auto Glass - Janesville | 59 | 4.8★ (177) | Janesville, 12 mi away | Sat | — |
| 3 | KobyCo Door & Window | 58 | 4.7★ (145) | Loves Park, 12 mi away | Sat | — |
| 4 | Aurum Contracting | 58 | 4.7★ (253) | Beloit, 3 mi away | 24/7 | Emergencies |
| 5 | Pella Window and Door Office/Warehouse of Rockford | 58 | 4.6★ (724) | Rockford, 20 mi away | — | Most reviews |
| 6 | Bufalo Contracting | 57 | 4.8★ (420) | Rockford, 19 mi away | 24/7 | — |
| 7 | Window World of Rockford | 57 | 4.5★ (291) | Loves Park, 13 mi away | — | — |
| 8 | Warner Roofing & Restoration | 56 | 4.8★ (179) | Rockford, 16 mi away | 24/7 | — |
| 9 | EZegress Windows | 56 | 4.9★ (317) | Lake Geneva, 33 mi away | — | — |
| 10 | Huskie Exteriors Inc | 56 | 4.9★ (130) | Rockford, 16 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 in South Beloit
Based in Rockford, 16 mi away
Ranked #1 because of its Google rating and trade focus: 4.7★ from 417 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Janesville, 12 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 177 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loves Park, 12 mi away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 145 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Beloit, 3 mi away
Ranked #4 because of its Google rating and review volume: 4.7★ from 253 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockford, 20 mi away
Ranked #5 because of its Google rating and review volume: 4.6★ from 724 Google reviews, the most in South Beloit.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockford, 19 mi away
Ranked #6 because of its Google rating and review volume: 4.8★ from 420 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loves Park, 13 mi away
Ranked #7 because of its Google rating and trade focus: 4.5★ from 291 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockford, 16 mi away
Ranked #8 because of its Google rating and review volume: 4.8★ from 179 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lake Geneva, 33 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 317 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockford, 16 mi away
Ranked #10 because of its Google rating and review volume: 4.9★ from 130 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockford, 16 mi away
Ranked #11 because of its Google rating and review volume: 4.9★ from 280 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Janesville, 10 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loves Park, 14 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Window installation service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Darien, 26 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Janesville, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 52 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lake in the Hills, 40 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 65 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loves Park, 11 mi away
Ranked #17 because of its Google rating and review volume: 4.9★ from 105 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Rockford, 16 mi away
Ranked #18 because of its Google rating and trade focus: 4.3★ from 143 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Janesville, 13 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Window installation service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Janesville, 16 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 72 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Delavan, 26 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 29 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Elkhorn, 28 mi away
Ranked #22 because of its Google rating and trade focus: 4.6★ from 124 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lake Geneva, 29 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loves Park, 13 mi away
Ranked #24 because of its Google rating and review volume: 5.0★ from 59 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Loves Park, 17 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Typical prices in USD, adjusted for Illinois with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,430 | $7,340 | $11,830 | Per project (several windows): typical range of customer-reported projects. US national range × 1.00 East North Central factor (2025 Cost vs. Value Report) | October 2026 |
We scored 124 South Beloit 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 South Beloit 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 |