92/100CR 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 Great Falls, VA (2026)
616 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Great Falls: Kennedy Locksmith, CR Score 92/100; 4.9★ from 980 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Quality Window & Glass Repair LLC, posts 24/7 hours; ranked #2 of 616.
- 6
Most-reviewed: Window Nation, 4,186 Google reviews at 4.7★, the most of 616 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
616 Great Falls window installers are ranked here by CR Score, from 8 published factors. 109 are open 24/7, 407 open Saturdays and 222 open Sundays, based on posted hours. The median Google rating is 4.9★ across 616 rated businesses.
Top 10 window installers in Great Falls at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Kennedy Locksmith | 92 | 4.9★ (980) | Aspen Hill, 12 mi away | 24/7 | Overall |
| 2 | Quality Window & Glass Repair LLC | 91 | 5.0★ (392) | Germantown, 12 mi away | 24/7 | Emergencies |
| 3 | Kennedy Glass in DC | 90 | 4.9★ (382) | Washington, D.C., 15 mi away | 24/7 | — |
| 4 | Safety Glass Repair | 89 | 5.0★ (165) | Gaithersburg, 15 mi away | 24/7 | — |
| 5 | Renewal by Andersen of the Capital Region | 89 | 4.9★ (1,041) | North Bethesda, 10 mi away | Sat · Sun | — |
| 6 | Window Nation | 88 | 4.7★ (4,186) | Glen Burnie, 37 mi away | 24/7 | Most reviews |
| 7 | Lumina Glass & Windows | 88 | 5.0★ (107) | Washington, D.C., 16 mi away | 24/7 | — |
| 8 | Renewal by Andersen of the Capital Region | 88 | 4.8★ (669) | Fairfax, 9 mi away | — | — |
| 9 | Zen Windows Washington DC | 88 | 5.0★ (119) | Washington, D.C., 19 mi away | 24/7 | — |
| 10 | Prestine Glass Solutions – Window & Glass Replacement | 88 | 5.0★ (101) | Washington, D.C., 18 mi away | 24/7 | — |
The 616 best window installers in Great Falls, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Based in Germantown, 12 mi away
91/100CR ScoreRanked #2 because of its Google rating and availability: 5.0★ from 392 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 392 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 19006 Perrone Dr, Germantown, MD 20874
Based in Washington, D.C., 15 mi away
90/100CR ScoreRanked #3 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 Gaithersburg, 15 mi away
89/100CR ScoreRanked #4 because of its Google rating and availability: 5.0★ from 165 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 165 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 20032 Mattingly Terrace, Gaithersburg, MD 20879
Based in North Bethesda, 10 mi away
89/100CR ScoreRanked #5 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 Glen Burnie, 37 mi away
88/100CR ScoreRanked #6 because of its Google rating and review volume: 4.7★ from 4,186 Google reviews, the most Google reviews on this list (4,186).
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.7★ from 4,186 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 871 Cromwell Park Dr, Glen Burnie, MD 21061
Based in Washington, D.C., 16 mi away
88/100CR ScoreRanked #7 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 Fairfax, 9 mi away
88/100CR ScoreRanked #8 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 Washington, D.C., 19 mi away
88/100CR ScoreRanked #9 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 Washington, D.C., 18 mi away
88/100CR ScoreRanked #10 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
#11 Window Nation
Based in Lorton, 19 mi away
88/100CR ScoreRanked #11 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 Alexandria, 16 mi away
88/100CR ScoreRanked #12 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 Silver Spring, 15 mi away
88/100CR ScoreRanked #13 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 Aspen Hill, 11 mi away
87/100CR ScoreRanked #14 because of its Google rating and availability: 5.0★ from 50 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 50 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Washington, D.C., 15 mi away
87/100CR ScoreRanked #15 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
Based in Arlington, 15 mi away
87/100CR ScoreRanked #16 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
#17 Pro Glass Repair
Based in Washington, D.C., 14 mi away
87/100CR ScoreRanked #17 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
Based in Chantilly, 11 mi away
87/100CR ScoreRanked #18 because of its Google rating and availability: 4.9★ from 2,385 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 2,385 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 14155 Sullyfield Cir Suite A, Chantilly, VA 20151
Based in Dale City, 24 mi away
87/100CR ScoreRanked #19 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 Falls Church, 11 mi away
87/100CR ScoreRanked #20 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 Merrifield, 8 mi away
86/100CR ScoreRanked #21 because of its Google rating and availability: 5.0★ from 24 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 5.0★ from 24 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Gaithersburg, 11 mi away
86/100CR ScoreRanked #22 because of its Google rating and availability: 4.8★ from 45 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.8★ from 45 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 17729 Stoneridge Dr, Gaithersburg, MD 20878
Based in Arlington, 14 mi away
86/100CR ScoreRanked #23 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 Darnestown, 12 mi away
86/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 231 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 231 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat 9:30 AM–4:30 PM · Sun 10 AM–3 PM
Based in Washington, D.C., 23 mi away
86/100CR ScoreRanked #25 because of its Google rating and availability: 4.9★ from 3,700 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.9★ from 3,700 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11820 W Market Pl Ste f, Fulton, MD 20759
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 616 ranked window installers here; the rest are on their profiles.
Also serving Great Falls
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 |
|---|---|---|
| AL’S GLASS & SCREEN, LLC | 5.0★ (1) | In Great Falls |
| Alvarado Contractors, LLC | In Great Falls | |
| AND Construction | 5.0★ (9) | In Great Falls |
| Arden | 4.6★ (36) | In Great Falls |
| Builders Siding Co | 5.0★ (2) | 13 mi |
| CBSI | 5.0★ (1) | In Great Falls |
| Fish Window Cleaning | 5.0★ (2) | 11 mi |
| Foley Companies | 3.7★ (3) | In Great Falls |
| Foley Construction Co | 5.0★ (1) | In Great Falls |
| Great Falls Construction | 5.0★ (17) | In Great Falls |
| HiRISE WINDOWS | 3.0★ (2) | 10 mi |
| L+K Design Build | 5.0★ (1) | In Great Falls |
| Lynteq Solutions | In Great Falls | |
| Margery Wedderburn Interiors | 5.0★ (2) | In Great Falls |
| Next Step Flooring | 4.7★ (28) | In Great Falls |
| Oriental Living | 5.0★ (2) | 10 mi |
| PROFIX WINDOWS & DOORS SERVICES | 5.0★ (2) | 10 mi |
| Sears Heating and Air Conditioning | 3.0★ (2) | 5 mi |
| Terry's Custom Woodworks | 5.0★ (29) | In Great Falls |
| WG Home Remodeling | 5.0★ (2) | 9 mi |
How much do window installers cost in Great Falls?
Typical prices in USD, adjusted for Virginia 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 Great Falls window installers
We scored 616 Great Falls 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 Great Falls 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 Great Falls: frequently asked questions
Who is the best window installer in Great Falls?
By CR Score, the highest-ranked window installer in Great Falls, VA is Kennedy Locksmith with a CR Score of 92/100. It has 4.9★ from 980 Google reviews. It is open 24/7. Quality Window & Glass Repair LLC (#2) and Kennedy Glass in DC (#3) follow. We ranked 616 window installers on 8 factors, last updated October 22, 2026.
How many window installers are there in Great Falls?
ContractorsRanked ranks 616 window installers serving Great Falls, VA. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which window installers in Great Falls are open 24/7?
109 ranked window installers in Great Falls post 24/7 hours. The highest-ranked are Kennedy Locksmith (#1), Quality Window & Glass Repair LLC (#2) and Kennedy Glass in DC (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which window installers in Great Falls work on weekends?
407 of 616 ranked window installers post Saturday hours and 222 post Sunday hours. The highest-ranked open Saturdays are Kennedy Locksmith (#1), Quality Window & Glass Repair LLC (#2) and Kennedy Glass in DC (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does window replacement cost in Great Falls?
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 Virginia. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Great Falls window installers have?
The median Google rating among 616 rated window installers in Great Falls is 4.9★, with a median of 34 reviews. Window Nation has the most, 4,186 reviews, and ranks #6. 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 Great Falls count in this ranking?
Yes, if they are within 40 mi of the Great Falls 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 Great Falls
- October 2026: CR Scores recalculated for 616 window installers serving Great Falls.
- October 2026: 1 duplicate listing merged.
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