81/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 143 Google reviews, open 24/7.
- 5.0★ from 143 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4520 Sunningdale Dr, Naperville, IL 60564
Best Window Installers in Ottawa, IL (2026)
73 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Ottawa: Everlast Exteriors Of Illinois Inc, CR Score 81/100; 5.0★ from 143 Google reviews; open 24/7.
- 5
Best for emergencies (open 24/7): Astra Roofing, posts 24/7 hours; ranked #5 of 73.
- 7
Most-reviewed: Greater Midwest Exteriors, 434 Google reviews at 4.9★, the most of 73 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
73 Ottawa window installers are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 43 open Saturdays and 19 open Sundays, based on posted hours. The median Google rating is 4.8★ across 73 rated businesses.
Top 10 window installers in Ottawa at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Everlast Exteriors Of Illinois Inc | 81 | 5.0★ (143) | Naperville, 40 mi away | 24/7 | Overall |
| 2 | RENOVX Windows Replacement | 80 | 4.9★ (32) | Aurora, 40 mi away | Sat · Sun · Evenings | — |
| 3 | Koolmaster Co. Inc. | 80 | 4.5★ (51) | La Salle, 14 mi away | Sat | — |
| 4 | Carmody Construction Inc. | 78 | 4.8★ (182) | Oswego, 35 mi away | Sat · Sun | — |
| 5 | Astra Roofing | 77 | 5.0★ (37) | Aurora, 40 mi away | 24/7 | Emergencies |
| 6 | Advance Home Remodelers & Services Inc. | 77 | 5.0★ (29) | Montgomery, 37 mi away | Sat | — |
| 7 | Greater Midwest Exteriors | 77 | 4.9★ (434) | Shorewood, 35 mi away | Sat · Evenings | Most reviews |
| 8 | NE Window Replacement | 77 | 5.0★ (38) | Aurora, 39 mi away | Sat | — |
| 9 | Window Pros Inc | 77 | 4.9★ (205) | Plainfield, 38 mi away | — | — |
| 10 | Signa System Co | 77 | 5.0★ (5) | Darien, 34 mi away | Sat · Sun · Evenings | — |
The 73 best window installers in Ottawa, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Aurora, 40 mi away
80/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 32 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 32 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 482 N View St, Aurora, IL 60506
Based in La Salle, 14 mi away
80/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.5★ from 51 Google reviews, listed on Google as “Window installation service”.
- 4.5★ from 51 Google reviews
- Hours
- Mon–Fri 8 AM–5:30 PM · Sat 8 AM–12:30 PM · Sun closed
- Address
- 300 2nd St, La Salle, IL 61301
Based in Oswego, 35 mi away
78/100CR ScoreRanked #4 because of its Google rating and review volume: 4.8★ from 182 Google reviews, 182 Google reviews.
- 4.8★ from 182 Google reviews
- Hours
- Mon–Sat 7 AM–5 PM · Sun 12 PM–3 PM
- Address
- 27 Stone Hill Rd unit b, Oswego, IL 60543
Based in Aurora, 40 mi away
77/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 37 Google reviews, open 24/7.
- 5.0★ from 37 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2426 Baldwin Ct, Aurora, IL 60503
Based in Montgomery, 37 mi away
77/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 29 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 10 AM–2 PM · Sun closed
Based in Shorewood, 35 mi away
77/100CR ScoreRanked #7 because of its Google rating and review volume: 4.9★ from 434 Google reviews, the most Google reviews on this list (434).
- 4.9★ from 434 Google reviews
- Hours
- Mon–Sat 8 AM–8 PM · Sun closed
- Address
- 401 Earl Rd Unit E, Shorewood, IL 60404
Based in Aurora, 39 mi away
77/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 38 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 38 Google reviews
- Hours
- Mon–Fri 9 AM–6 PM · Sat 9 AM–5 PM · Sun closed
- Address
- 100 W Galena Blvd, Aurora, IL 60506
Based in Plainfield, 38 mi away
77/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 205 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 205 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 2425 Von Esch Rd STE C, Plainfield, IL 60586
#10 Signa System Co
Based in Darien, 34 mi away
77/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 5 Google reviews
- Hours
- Mon–Sun 9 AM–9 PM
#11 Joliet Windows
Based in Montgomery, 36 mi away
76/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 8 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 8 AM–4 PM · Sun 9 AM–5 PM
Based in Streator, 16 mi away
76/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Fri 6 AM–6 PM · Sat 8 AM–4 PM · Sun closed
- Address
- 109 Iowa Ave, Streator, IL 61364
Based in Oswego, 38 mi away
76/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 84 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 84 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 1981 Wiesbrook Dr AF, Oswego, IL 60543
Based in Ottawa
75/100CR ScoreRanked #14 because of its Google rating and availability: 4.2★ from 5 Google reviews, open 7 days a week.
- 4.2★ from 5 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat–Sun 8 AM–1 PM
#15 The Glass Guy
Based in Spring Valley, 19 mi away
75/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 18 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 330 1/2 W Dakota St, Spring Valley, IL 61362
Based in Plainfield, 40 mi away
74/100CR ScoreRanked #16 because of its Google rating and review volume: 4.8★ from 295 Google reviews, 295 Google reviews.
- 4.8★ from 295 Google reviews
- Hours
- Mon–Sat 8 AM–5 PM · Sun closed
- Address
- 23831 W Andrew Rd, Plainfield, IL 60585
#17 Maze Lumber Co
Based in Peru, 14 mi away
74/100CR ScoreRanked #17 because of its Google rating and review volume: 4.8★ from 51 Google reviews, 51 Google reviews.
- 4.8★ from 51 Google reviews
- Hours
- Mon–Fri 7:30 AM–4:30 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 1100 Water St, Peru, IL 61354
Based in Ottawa
74/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.5★ from 4 Google reviews, listed on Google as “Window installation service”.
- 4.5★ from 4 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 4015 Tyler Dr, Ottawa, IL 61350
Based in Montgomery, 37 mi away
74/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.3★ from 18 Google reviews, listed on Google as “Window installation service”.
- 4.3★ from 18 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat 8 AM–2 PM · Sun closed
Based in Joliet, 33 mi away
74/100CR ScoreRanked #20 because of its Google rating and review volume: 5.0★ from 76 Google reviews, 76 Google reviews.
- 5.0★ from 76 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat 8 AM–2 PM · Sun closed
- Address
- 1508 Seiburg St, Joliet, IL 60431
Based in Joliet, 39 mi away
74/100CR ScoreRanked #21 because of its Google rating and availability: 5.0★ from 37 Google reviews, open 7 days a week.
- 5.0★ from 37 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun 8 AM–12 PM
Based in Oswego, 38 mi away
73/100CR ScoreRanked #22 because of its Google rating and review volume: 5.0★ from 98 Google reviews, 98 Google reviews.
- 5.0★ from 98 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 9 AM–2 PM · Sun closed
- Address
- 31 Kendall Point Dr, Oswego, IL 60543
#23 Exterior 1
Based in Sandwich, 23 mi away
73/100CR ScoreRanked #23 because of its Google rating and availability: 4.6★ from 9 Google reviews, open 7 days a week.
- 4.6★ from 9 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
Based in Aurora, 38 mi away
73/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Window installation service”.
- 4.5★ from 8 Google reviews
- Hours
- Mon–Fri 7:30 AM–4:30 PM · Sat 8:30 AM–12 PM · Sun closed
- Address
- 939 Montgomery Ave, Aurora, IL 60506
Based in Plainfield, 37 mi away
73/100CR ScoreRanked #25 because of its Google rating and availability: 4.8★ from 23 Google reviews, open 7 days a week.
- 4.8★ from 23 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 10 AM–3 PM
- Address
- 24227 W Commercial St, Plainfield, IL 60544
Window installers ranked #26 to #50
#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 73 ranked window installers here; the rest are on their profiles.
Also serving Ottawa
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 |
|---|---|---|
| 5 Star Floor and More Inc | 4.9★ (27) | In Ottawa |
| B&B Remodeling Co | 3.0★ (1) | 13 mi |
| CAP Construction Services | 5.0★ (1) | In Ottawa |
| Cesar Wi C G Painting LLC | 36 mi | |
| Country View Siding and Windows | 32 mi | |
| Gold Standard Restorations, Inc. | 35 mi | |
| Gordon & Backhus Glass & Lock | 5.0★ (2) | 22 mi |
| Greater Midwest Exteriors - Morris | 5.0★ (1) | 22 mi |
| Greater Midwest Exteriors - Plainfield | 37 mi | |
| J. W. Woodworks | In Ottawa | |
| JC Glass Works | 31 mi | |
| Matteson Construction | 27 mi | |
| Ottawa Warehouse Bargains | 4.0★ (212) | In Ottawa |
| P. L. S. Remodeling And Repairs - Rodney Seibert | 1.0★ (1) | In Ottawa |
| Pinter General Contracting | 19 mi | |
| Princeton Siding & Windows | 32 mi | |
| R.E. Duchene Construction | 37 mi | |
| The Window Guys | 5.0★ (2) | 35 mi |
| Top Builders | 3.0★ (1) | 12 mi |
| Wardell Art Glass | 5.0★ (2) | 39 mi |
How much do window installers cost in Ottawa?
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 |
How we ranked Ottawa window installers
We scored 73 Ottawa 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 Ottawa 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 |
Window installers in Ottawa: frequently asked questions
Who is the best window installer in Ottawa?
By CR Score, the highest-ranked window installer in Ottawa, IL is Everlast Exteriors Of Illinois Inc with a CR Score of 81/100. It has 5.0★ from 143 Google reviews. It is open 24/7. RENOVX Windows Replacement (#2) and Koolmaster Co. Inc. (#3) follow. We ranked 73 window installers on 8 factors, last updated October 22, 2026.
How many window installers are there in Ottawa?
ContractorsRanked ranks 73 window installers serving Ottawa, IL. 2 of them are based in Ottawa; the rest serve it from nearby towns. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which window installers in Ottawa are open 24/7?
2 ranked window installers in Ottawa post 24/7 hours. The highest-ranked are Everlast Exteriors Of Illinois Inc (#1) and Astra Roofing (#5). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which window installers in Ottawa work on weekends?
43 of 73 ranked window installers post Saturday hours and 19 post Sunday hours. The highest-ranked open Saturdays are Everlast Exteriors Of Illinois Inc (#1), RENOVX Windows Replacement (#2) and Koolmaster Co. Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does window replacement cost in Ottawa?
Window replacement typically costs $3,430 to $11,830, with $7,340 typical (Per project (several windows): typical range of customer-reported projects. US national range × 1.00 East North Central factor (2025 Cost vs. Value Report)). The range is adjusted for Illinois. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Ottawa window installers have?
The median Google rating among 73 rated window installers in Ottawa is 4.8★, with a median of 18 reviews. Greater Midwest Exteriors has the most, 434 reviews, and ranks #7. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank window installers?
Each window installer gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do window installers outside Ottawa count in this ranking?
Yes, if they are within 40 mi of the Ottawa city center, our service radius for window installers. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for Ottawa
- October 2026: CR Scores recalculated for 73 window installers serving Ottawa.
More window installers and Ottawa pages
Window installers near Ottawa
- Window installers in La Salle, IL20 ranked
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