402 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Harvard: WarmDreams Windows & Doors, CR Score 61/100; 5.0★ from 522 Google reviews; open 24/7.
Best for emergencies (open 24/7): Nemo Construction Inc, posts 24/7 hours; ranked #11 of 402.
Most-reviewed: Ernest Windows,Inc, 2,808 Google reviews at 4.8★, the most of 402 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
402 Harvard window installers are ranked here by CR Score, from ten published factors. 31 are open 24/7, 251 open Saturdays and 85 open Sundays, based on posted hours. The median Google rating is 4.9★ across 402 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | WarmDreams Windows & Doors | 61 | 5.0★ (522) | Elgin, 29 mi away | 24/7 | Overall |
| 2 | Feldco Windows, Siding, Doors & Roofing of Rockford | 59 | 4.7★ (417) | Rockford, 24 mi away | Sat · Sun · Evenings | — |
| 3 | Window Well Services LLC | 59 | 5.0★ (241) | Elgin, 30 mi away | Sat · Sun · Evenings | — |
| 4 | Argo Glass & Windows - Window Repair & Glass Replacement | 58 | 4.9★ (1,274) | Palatine, 36 mi away | Sat | — |
| 5 | Local Window Service Inc. | 57 | 4.9★ (65) | Lake in the Hills, 20 mi away | Sat · Sun · Evenings | — |
| 6 | EZegress Windows | 57 | 4.9★ (317) | Lake Geneva, 17 mi away | — | — |
| 7 | P3 Window Tinting | 56 | 5.0★ (68) | Lake Villa, 28 mi away | Sat · Sun | — |
| 8 | Ernest Windows,Inc | 56 | 4.8★ (2,808) | Bartlett, 38 mi away | Sat · Sun · Evenings | Most reviews |
| 9 | Elite Auto Glass - Janesville | 56 | 4.8★ (177) | Janesville, 26 mi away | Sat | — |
| 10 | KobyCo Door & Window | 56 | 4.7★ (145) | Loves Park, 20 mi away | Sat | — |
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: 5.0★ from 522 Google reviews, listed on Google as “Window installation service”.
Based in Rockford, 24 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 in Elgin, 30 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 241 Google reviews, listed on Google as “Window installation service”.
Based in Palatine, 36 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,274 Google reviews, listed on Google as “Window installation service”.
Based in Lake in the Hills, 20 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 65 Google reviews, listed on Google as “Window installation service”.
Based in Lake Geneva, 17 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 317 Google reviews, listed on Google as “Window installation service”.
Based in Lake Villa, 28 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 68 Google reviews, listed on Google as “Window installation service”.
Based in Bartlett, 38 mi away
Ranked #8 because of its Google rating and review volume: 4.8★ from 2,808 Google reviews, the most in Harvard.
Based in Janesville, 26 mi away
Ranked #9 because of its Google rating and trade focus: 4.8★ from 177 Google reviews, listed on Google as “Window installation service”.
Based in Loves Park, 20 mi away
Ranked #10 because of its Google rating and trade focus: 4.7★ from 145 Google reviews, listed on Google as “Window installation service”.
Based in Darien, 23 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Window installation service”.
Based in McHenry, 19 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 54 Google reviews, listed on Google as “Window installation service”.
Based in Grayslake, 29 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Window installation service”.
Based in Palatine, 35 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 191 Google reviews, listed on Google as “Window installation service”.
Based in Marengo, 11 mi away
Ranked #15 because of its Google rating and trade focus: 3.7★ from 6 Google reviews, listed on Google as “Window installation service”.
Based in Lake in the Hills, 21 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 60 Google reviews, listed on Google as “Window installation service”.
Based in Lake Geneva, 12 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Window installation service”.
Based in Algonquin, 25 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 59 Google reviews, listed on Google as “Window installation service”.
Based in Arlington Heights, 39 mi away
Ranked #19 because of its Google rating and trade focus: 4.8★ from 492 Google reviews, listed on Google as “Window installation service”.
Based in Village of Campton Hills, 34 mi away
Ranked #20 because of its Google rating and trade focus: 4.5★ from 203 Google reviews, listed on Google as “Window installation service”.
Based in Delavan, 12 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 in Palatine, 35 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Window installation service”.
Based in McHenry, 22 mi away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 228 Google reviews, listed on Google as “Window installation service”.
Based in Algonquin, 24 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Window installation service”.
Based in McHenry, 18 mi away
Ranked #25 because of its Google rating and review volume: 5.0★ from 154 Google reviews.
#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 402 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 |
|---|---|---|
| Acade Construction | 4.0★ (2) | 38 mi |
| Affordable Construction Company | 3.8★ (4) | In Harvard |
| BahrkeBuilt LLC | 5.0★ (1) | In Harvard |
| Basements Etc., Inc. | 5.0★ (2) | 25 mi |
| Blodgett Exteriors | 5.0★ (2) | 16 mi |
| Bruce Edward Draperies | 5.0★ (2) | 24 mi |
| Clearview Windows & Gutters Cleaning | 5.0★ (2) | 31 mi |
| Colorado Renovations | 3.0★ (2) | 36 mi |
| Eagle Home Solutions | 5.0★ (2) | 36 mi |
| F H Windows & Remodeling | 5.0★ (2) | 37 mi |
| GF Window Company | 3.0★ (2) | 25 mi |
| JC champs Remodeling | 1.0★ (2) | 36 mi |
| Junior’s Seamless Gutters | 4.7★ (15) | In Harvard |
| Klimczak Improvements, Inc. | 4.5★ (6) | In Harvard |
| Skyline Exteriors, LLC. | 5.0★ (2) | 31 mi |
| Superior Service Co. | 5.0★ (2) | 20 mi |
| Timeless Home Improvement | In Harvard | |
| Top Quality Exteriors | 5.0★ (2) | 21 mi |
| UltraPAC Window Replacement | 5.0★ (2) | 31 mi |
| Windowpane | 5.0★ (2) | 22 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 402 Harvard 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 Harvard 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 |