90/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 980 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 980 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best Window Installers in St. Charles, MD (2026)
500 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in St. Charles: Kennedy Locksmith, CR Score 90/100; 4.9★ from 980 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Kennedy Glass in DC, posts 24/7 hours; ranked #2 of 500.
- 29
Most-reviewed: American Home Contractors, 3,700 Google reviews at 4.9★, the most of 500 ranked; ranked #29.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
500 St. Charles window installers are ranked here by CR Score, from 8 published factors. 87 are open 24/7, 329 open Saturdays and 173 open Sundays, based on posted hours. The median Google rating is 4.9★ across 500 rated businesses.
Top 10 window installers in St. Charles at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Kennedy Locksmith | 90 | 4.9★ (980) | Aspen Hill, 25 mi away | 24/7 | Overall |
| 2 | Kennedy Glass in DC | 89 | 4.9★ (382) | Washington, D.C., 22 mi away | 24/7 | Emergencies |
| 3 | Window Nation | 88 | 4.5★ (1,235) | Lorton, 17 mi away | 24/7 | — |
| 4 | DMV Window Repairs LLC | 88 | 5.0★ (115) | Dale City, 19 mi away | 24/7 | — |
| 5 | Prestine Glass Solutions – Window & Glass Replacement | 88 | 5.0★ (101) | Washington, D.C., 19 mi away | 24/7 | — |
| 6 | Lumina Glass & Windows | 88 | 5.0★ (107) | Washington, D.C., 21 mi away | 24/7 | — |
| 7 | Old Town Glass & Window Repair | 87 | 5.0★ (372) | Alexandria, 18 mi away | — | — |
| 8 | Fast Glass Solutions | 87 | 4.9★ (80) | Arlington, 20 mi away | 24/7 | — |
| 9 | AA Window & Glass Repair | 86 | 4.8★ (116) | Washington, D.C., 22 mi away | 24/7 | — |
| 10 | Pro Glass Repair | 86 | 4.9★ (74) | Washington, D.C., 22 mi away | 24/7 | — |
The 500 best window installers in St. Charles, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Based in Washington, D.C., 22 mi away
89/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 382 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 382 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 901 R St NW, Washington, DC 20001
Based in Lorton, 17 mi away
88/100CR ScoreRanked #3 because of its Google rating and availability: 4.5★ from 1,235 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.5★ from 1,235 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8198 Terminal Rd #105, Lorton, VA 22079
Based in Dale City, 19 mi away
88/100CR ScoreRanked #4 because of its Google rating and availability: 5.0★ from 115 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 115 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 13709 Lynn St, Woodbridge, VA 22191
Based in Washington, D.C., 19 mi away
88/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 101 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 101 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1235 Pennsylvania Ave. SE, Washington, DC 20003
Based in Washington, D.C., 21 mi away
88/100CR ScoreRanked #6 because of its Google rating and availability: 5.0★ from 107 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 107 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1101 Pennsylvania Ave NW, Washington, DC 20004
Based in Alexandria, 18 mi away
87/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 372 Google reviews, listed on Google as “Window installation service”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
- 5.0★ from 372 Google reviews
- Address
- 244 S Reynolds St, Alexandria, VA 22304
Based in Arlington, 20 mi away
87/100CR ScoreRanked #8 because of its Google rating and availability: 4.9★ from 80 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 80 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1850 Columbia Pike, Arlington, VA 22204
Based in Washington, D.C., 22 mi away
86/100CR ScoreRanked #9 because of its Google rating and availability: 4.8★ from 116 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.8★ from 116 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1535 17th St NW Ste 200, Washington, DC 20036
#10 Pro Glass Repair
Based in Washington, D.C., 22 mi away
86/100CR ScoreRanked #10 because of its Google rating and availability: 4.9★ from 74 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 74 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2425 L St NW, Washington, DC 20037
#11 DMV Pro Glass
Based in Dale City, 22 mi away
86/100CR ScoreRanked #11 because of its Google rating and availability: 4.9★ from 63 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 63 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 12223 Nutmeg Ct, Woodbridge, VA 22192
Based in Waldorf, 3 mi away
85/100CR ScoreRanked #12 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.
- 5.0★ from 8 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3029 Lundt Ct, Waldorf, MD 20603
Based in North Bethesda, 32 mi away
85/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 1,041 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 1,041 Google reviews
- Hours
- Mon–Sun 10 AM–6 PM
- Address
- 5081 Nicholson Ln, North Bethesda, MD 20852
Based in Silver Spring, 30 mi away
85/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 416 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 416 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 10822 Childs Ct, Silver Spring, MD 20901
Based in Fairfax, 25 mi away
85/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 669 Google reviews, listed on Google as “Window installation service”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
- 4.8★ from 669 Google reviews
- Address
- 2814 Merrilee Dr A, Fairfax, VA 22031
Based in Lanham, 24 mi away
85/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.5★ from 3,143 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.5★ from 3,143 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 8 AM–5 PM · Sun 9 AM–5 PM
- Address
- 4200 Parliament Pl #600, Lanham, MD 20706
Based in Arlington, 22 mi away
85/100CR ScoreRanked #17 because of its Google rating and availability: 5.0★ from 35 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 35 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Washington, D.C., 37 mi away
85/100CR ScoreRanked #18 because of its Google rating and availability: 5.0★ from 119 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 119 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Falls Church, 22 mi away
85/100CR ScoreRanked #19 because of its Google rating and availability: 4.8★ from 50 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.8★ from 50 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6533, 2035 Arlington Blvd Suite A 2035, A, Falls Church, VA 22042
Based in Waldorf, 1 mi away
85/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 29 Google reviews
- Hours
- Mon–Sun 9 AM–5 PM
- Address
- 52 Industrial Park Dr Suite 11, Waldorf, MD 20602
Based in College Park, 28 mi away
84/100CR ScoreRanked #21 because of its Google rating and availability: 4.8★ from 159 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.8★ from 159 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9320 Cherry Hill Rd, College Park, MD 20740
Based in Alexandria, 17 mi away
84/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 16 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 16 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5407 Vine St Rose Hill, Alexandria, VA 22310
Based in Hyattsville, 24 mi away
84/100CR ScoreRanked #23 because of its Google rating and availability: 4.7★ from 53 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.7★ from 53 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8181 Professional Pl Suite 117, Hyattsville, MD 20785
Based in Crofton, 22 mi away
84/100CR ScoreRanked #24 because of its Google rating and availability: 5.0★ from 22 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 22 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Springfield, 18 mi away
84/100CR ScoreRanked #25 because of its Google rating and availability: 5.0★ from 15 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 15 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7735 Matisse Way, Springfield, VA 22153
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 500 ranked window installers here; the rest are on their profiles.
Also serving St. Charles
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 |
|---|---|---|
| 410 New Roof | 5.0★ (2) | 15 mi |
| A&A Garage Doors & Gates | 4.5★ (32) | In St. Charles |
| Allied Auto Glass of D.C | 5.0★ (2) | 21 mi |
| AZE Home Improvement, LLC | 5.0★ (2) | 21 mi |
| Clear Choice of Maryland | 3.0★ (2) | 23 mi |
| Command Steemers L.L.C | 4.9★ (200) | In St. Charles |
| HiRISE WINDOWS | 3.0★ (2) | 28 mi |
| Home Excel | In St. Charles | |
| M & G Renovations, Inc | 5.0★ (2) | 27 mi |
| Oriental Living | 5.0★ (2) | 28 mi |
| Patch Masonry & Construction | 5.0★ (1) | In St. Charles |
| PROFIX WINDOWS & DOORS SERVICES | 5.0★ (2) | 26 mi |
| Same Day Appliance Repairs | 4.9★ (161) | In St. Charles |
| Sears Heating and Air Conditioning | 3.0★ (2) | 1 mi |
| Sears Window Replacement | 2.5★ (2) | 19 mi |
| SG Windows and Doors LLC | 5.0★ (2) | 29 mi |
| Shan Valley Cleaning and Remodeling Services LLC | 5.0★ (8) | In St. Charles |
| Smart Home Improvement DMV | 5.0★ (2) | 28 mi |
| TriState Glassworx | 5.0★ (2) | 20 mi |
| WG Home Remodeling | 5.0★ (2) | 28 mi |
How much do window installers cost in St. Charles?
Typical prices in USD, adjusted for Maryland with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,370 | $7,200 | $11,600 | Per project (several windows): typical range of customer-reported projects. US national range × 0.98 South Atlantic factor (2025 Cost vs. Value Report) | October 2026 |
How we ranked St. Charles window installers
We scored 500 St. Charles 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 St. Charles 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 St. Charles: frequently asked questions
Who is the best window installer in St. Charles?
By CR Score, the highest-ranked window installer in St. Charles, MD is Kennedy Locksmith with a CR Score of 90/100. It has 4.9★ from 980 Google reviews. It is open 24/7. Kennedy Glass in DC (#2) and Window Nation (#3) follow. We ranked 500 window installers on 8 factors, last updated October 22, 2026.
How many window installers are there in St. Charles?
ContractorsRanked ranks 500 window installers serving St. Charles, MD. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which window installers in St. Charles are open 24/7?
87 ranked window installers in St. Charles post 24/7 hours. The highest-ranked are Kennedy Locksmith (#1), Kennedy Glass in DC (#2) and Window Nation (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which window installers in St. Charles work on weekends?
329 of 500 ranked window installers post Saturday hours and 173 post Sunday hours. The highest-ranked open Saturdays are Kennedy Locksmith (#1), Kennedy Glass in DC (#2) and Window Nation (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does window replacement cost in St. Charles?
Window replacement typically costs $3,370 to $11,600, with $7,200 typical (Per project (several windows): typical range of customer-reported projects. US national range × 0.98 South Atlantic factor (2025 Cost vs. Value Report)). The range is adjusted for Maryland. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do St. Charles window installers have?
The median Google rating among 500 rated window installers in St. Charles is 4.9★, with a median of 37 reviews. American Home Contractors has the most, 3,700 reviews, and ranks #29. 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 St. Charles count in this ranking?
Yes, if they are within 40 mi of the St. Charles 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 St. Charles
- October 2026: CR Scores recalculated for 500 window installers serving St. Charles.
- October 2026: 2 duplicate listings merged.
More window installers and St. Charles pages
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Other trades in St. Charles
- Roofers in St. Charles1151 ranked
- Plumbers in St. Charles399 ranked
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- Painters in St. Charles70 ranked
- Landscapers in St. Charles88 ranked
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- Kitchen remodelers in St. Charles482 ranked
- Bathroom remodelers in St. Charles498 ranked
- Flooring contractors in St. Charles358 ranked
- Tile installers in St. Charles22 ranked
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- Fence contractors in St. Charles89 ranked
- Deck builders in St. Charles196 ranked
- Siding contractors in St. Charles491 ranked
- Gutter installers in St. Charles156 ranked
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- Solar installers in St. Charles153 ranked
- Garage door repair companies in St. Charles52 ranked
- Foundation repair companies in St. Charles160 ranked
- Tree services in St. Charles194 ranked
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