166 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Janesville: Mad City Windows & Baths of Madison, CR Score 85/100; 4.5★ from 3,720 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): 1-800-HANSONS, posts 24/7 hours; ranked #2 of 166.
Most-reviewed: Renewal by Andersen, 1,436 Google reviews at 5.0★, the most of 166 ranked after Mad City Windows & Baths of Madison; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
166 Janesville window installers are ranked here by CR Score, from 8 published factors. 22 are open 24/7, 84 open Saturdays and 37 open Sundays, based on posted hours. The median Google rating is 4.8★ across 166 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mad City Windows & Baths of Madison | 85 | 4.5★ (3,720) | Madison, 29 mi away | Sat · Sun · Evenings | Overall |
| 2 | 1-800-HANSONS | 84 | 4.8★ (130) | Madison, 34 mi away | 24/7 | Emergencies |
| 3 | Elite Auto Glass - Janesville | 83 | 4.8★ (177) | Janesville | Sat | — |
| 4 | Feldco Windows, Siding, Doors & Roofing of Rockford | 83 | 4.7★ (417) | Rockford, 29 mi away | Sat · Sun · Evenings | — |
| 5 | Renewal by Andersen | 82 | 5.0★ (1,436) | Madison, 35 mi away | Sat | Most reviews |
| 6 | Aurum Contracting | 82 | 4.7★ (253) | Beloit, 10 mi away | 24/7 | — |
| 7 | Renewal by Andersen of Janesville | 82 | 5.0★ (9) | Janesville | — | — |
| 8 | Feldco Windows, Siding, Doors & Roofing of Madison | 81 | 4.5★ (358) | Madison, 30 mi away | Sat · Sun · Evenings | — |
| 9 | Ridge Top Exteriors | 81 | 4.8★ (1,142) | Madison, 36 mi away | 24/7 | — |
| 10 | Storm Guard Roofing of Madison | 81 | 4.9★ (454) | Madison, 32 mi away | 24/7 | — |
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 review volume: 4.5★ from 3,720 Google reviews, the most Google reviews on this list (3,720).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Madison, 34 mi away
Ranked #2 because of its Google rating and availability: 4.8★ from 130 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Janesville
Ranked #3 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 Rockford, 29 mi away
Ranked #4 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 Madison, 35 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 1,436 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Beloit, 10 mi away
Ranked #6 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 Janesville
Ranked #7 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Window installation service”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Madison, 30 mi away
Ranked #8 because of its Google rating and trade focus: 4.5★ from 358 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Madison, 36 mi away
Ranked #9 because of its Google rating and availability: 4.8★ from 1,142 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Madison, 32 mi away
Ranked #10 because of its Google rating and availability: 4.9★ from 454 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Madison, 30 mi away
Ranked #11 because of its Google rating and availability: 4.9★ from 335 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockford, 32 mi away
Ranked #12 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 Darien, 39 mi away
Ranked #13 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 Janesville
Ranked #14 because of its Google rating and availability: 5.0★ from 62 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Rockford, 29 mi away
Ranked #15 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 Janesville
Ranked #16 because of its Google rating and availability: 4.7★ from 12 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Madison, 30 mi away
Ranked #17 because of its Google rating and availability: 4.8★ from 173 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Madison, 34 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Madison, 30 mi away
Ranked #19 because of its Google rating and availability: 4.9★ from 102 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Loves Park, 26 mi away
Ranked #20 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 Madison, 35 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 144 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Janesville
Ranked #22 because of its Google rating and trade focus: 4.9★ from 72 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Loves Park, 25 mi away
Ranked #23 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 Janesville
Ranked #24 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Madison, 32 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 684 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 166 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 |
|---|---|---|
| Adams & Sons Roofing Ltd. | 3.0★ (12) | In Janesville |
| Advanced Construction of Janesville | 4.4★ (13) | In Janesville |
| AMCL Exteriors | 5.0★ (21) | In Janesville |
| Complete RE Services LLC | 4.8★ (19) | In Janesville |
| Distinct Exteriors & Roofer in Janesville | 4.9★ (35) | In Janesville |
| Distinctive Craftsman LLC | 5.0★ (1) | In Janesville |
| Drake Construction and Restoration | 5.0★ (2) | In Janesville |
| GTS Contracting llc | 4.2★ (5) | In Janesville |
| Infinity Exteriors | 4.9★ (25) | In Janesville |
| Jackson's Masonry LLC | 5.0★ (14) | In Janesville |
| Janesville Door Co Ltd | 4.2★ (49) | In Janesville |
| Jimmy's Painters | 4.9★ (47) | In Janesville |
| JM Construction Group, LLC | 5.0★ (10) | In Janesville |
| Rock Valley Services, Inc. | 4.9★ (443) | In Janesville |
| Roofing Built To Last | 5.0★ (53) | In Janesville |
| Roofing Built To Last | 5.0★ (11) | In Janesville |
| Roofing Guy Janesville | 4.7★ (15) | In Janesville |
| Rote's Landscaping And Waterproofing | 4.9★ (71) | In Janesville |
| United Exteriors | 4.6★ (30) | In Janesville |
| White Oak Construction, Inc. | 4.3★ (12) | In Janesville |
Typical prices in USD, adjusted for Wisconsin 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 166 Janesville 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 Janesville 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 |