247 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Belvidere: WarmDreams Windows & Doors, CR Score 89/100; 5.0★ from 522 Google reviews; open 24/7.
Best for emergencies (open 24/7): Nemo Construction Inc, posts 24/7 hours; ranked #3 of 247.
Most-reviewed: Ernest Windows,Inc, 2,808 Google reviews at 4.8★, the most of 247 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
247 Belvidere window installers are ranked here by CR Score, from 8 published factors. 24 are open 24/7, 156 open Saturdays and 54 open Sundays, based on posted hours. The median Google rating is 4.8★ across 247 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | WarmDreams Windows & Doors | 89 | 5.0★ (522) | Elgin, 33 mi away | 24/7 | Overall |
| 2 | Feldco Windows, Siding, Doors & Roofing of Rockford | 86 | 4.7★ (417) | Rockford, 10 mi away | Sat · Sun · Evenings | — |
| 3 | Nemo Construction Inc | 85 | 5.0★ (12) | Darien, 9 mi away | 24/7 | Emergencies |
| 4 | Window Well Services LLC | 84 | 5.0★ (241) | Elgin, 31 mi away | Sat · Sun · Evenings | — |
| 5 | Bufalo Contracting | 84 | 4.8★ (420) | Rockford, 10 mi away | 24/7 | — |
| 6 | Local Window Service Inc. | 82 | 4.9★ (65) | Lake in the Hills, 25 mi away | Sat · Sun · Evenings | — |
| 7 | Warner Roofing & Restoration | 82 | 4.8★ (179) | Rockford, 13 mi away | 24/7 | — |
| 8 | HANDYMAN WE DO IT ALL INC. | 82 | 3.7★ (6) | Marengo, 13 mi away | 24/7 | — |
| 9 | Huskie Exteriors Inc | 82 | 4.9★ (130) | Rockford, 16 mi away | 24/7 | — |
| 10 | Ernest Windows,Inc | 82 | 4.8★ (2,808) | Bartlett, 40 mi away | Sat · Sun · Evenings | Most reviews |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 5.0★ from 522 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockford, 10 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 417 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Darien, 9 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 12 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Elgin, 31 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 241 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockford, 10 mi away
Ranked #5 because of its Google rating and availability: 4.8★ from 420 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lake in the Hills, 25 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 65 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockford, 13 mi away
Ranked #7 because of its Google rating and availability: 4.8★ from 179 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Marengo, 13 mi away
Ranked #8 because of its Google rating and availability: 3.7★ from 6 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockford, 16 mi away
Ranked #9 because of its Google rating and availability: 4.9★ from 130 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Bartlett, 40 mi away
Ranked #10 because of its Google rating and review volume: 4.8★ from 2,808 Google reviews, the most Google reviews on this list (2,808).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Loves Park, 8 mi away
Ranked #11 because of its Google rating and trade focus: 4.7★ from 145 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockford, 10 mi away
Ranked #12 because of its Google rating and availability: 4.9★ from 280 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Beloit, 21 mi away
Ranked #13 because of its Google rating and availability: 4.7★ from 253 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Loves Park, 19 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Window installation service”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in McHenry, 30 mi away
Ranked #15 because of its Google rating and availability: 5.0★ from 154 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Geneva, 38 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 643 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Chicago, 40 mi away
Ranked #17 because of its Google rating and availability: 4.9★ from 296 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Village of Campton Hills, 37 mi away
Ranked #18 because of its Google rating and trade focus: 4.5★ from 203 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Belvidere
Ranked #19 because of its Google rating and availability: 5.0★ from 8 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Loves Park, 10 mi away
Ranked #20 because of its Google rating and availability: 4.9★ from 105 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in DeKalb, 20 mi away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Janesville, 29 mi away
Ranked #22 because of its Google rating and trade focus: 4.8★ from 177 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Algonquin, 30 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 59 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockford, 12 mi away
Ranked #24 because of its Google rating and trade focus: 4.6★ from 724 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Lake in the Hills, 27 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 60 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 247 ranked window installers here; the rest are on their profiles.
20 more window installers within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Basements Etc., Inc. | 5.0★ (2) | 27 mi |
| Bel Rock Asphalt Paving, Inc. | 4.7★ (154) | In Belvidere |
| Blodgett Exteriors | 5.0★ (2) | In Belvidere |
| Bruce Edward Draperies | 5.0★ (2) | 31 mi |
| C & H Design Center | 4.5★ (26) | In Belvidere |
| Clearview Windows & Gutters Cleaning | 5.0★ (2) | 32 mi |
| Colorado Renovations | 3.0★ (2) | 34 mi |
| Corrugated Metals, Inc. | 2.7★ (9) | In Belvidere |
| CPR Construction Company | 5.0★ (2) | In Belvidere |
| Eagle Home Solutions | 5.0★ (2) | 37 mi |
| Fresh Coat | In Belvidere | |
| GF Window Company | 3.0★ (2) | 10 mi |
| GF your Home Exterior Experts since 1974 | In Belvidere | |
| Green Acres Lawn Care & Landscaping | 4.8★ (890) | In Belvidere |
| Half Price Heating & Air | 4.7★ (75) | In Belvidere |
| Jp construction and contracting LLC | 5.0★ (12) | In Belvidere |
| Superior Service Co. | 5.0★ (2) | 14 mi |
| Top Quality Exteriors | 5.0★ (2) | 20 mi |
| Unitrim Cement & Landscaping | 5.0★ (14) | In Belvidere |
| Windowpane | 5.0★ (2) | 9 mi |
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 247 Belvidere window installers on 8 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. Unknown factors are left out of the score, 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 Belvidere data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |