91/100CR 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 Herndon, VA (2026)
621 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Herndon: Kennedy Locksmith, CR Score 91/100; 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 621.
- 27
Most-reviewed: American Home Contractors, 3,700 Google reviews at 4.9★, the most of 621 ranked; ranked #27.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
621 Herndon window installers are ranked here by CR Score, from 8 published factors. 103 are open 24/7, 416 open Saturdays and 242 open Sundays, based on posted hours. The median Google rating is 4.9★ across 621 rated businesses.
Top 10 window installers in Herndon at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Kennedy Locksmith | 91 | 4.9★ (980) | Aspen Hill, 17 mi away | 24/7 | Overall |
| 2 | Quality Window & Glass Repair LLC | 91 | 5.0★ (392) | Germantown, 15 mi away | 24/7 | Emergencies |
| 3 | Kennedy Glass in DC | 89 | 4.9★ (382) | Washington, D.C., 20 mi away | 24/7 | — |
| 4 | Safety Glass Repair | 89 | 5.0★ (165) | Gaithersburg, 19 mi away | 24/7 | — |
| 5 | Renewal by Andersen of the Capital Region | 88 | 4.9★ (1,041) | North Bethesda, 16 mi away | Sat · Sun | — |
| 6 | American Home Contractors | 88 | 4.9★ (2,385) | Chantilly, 6 mi away | 24/7 | — |
| 7 | Renewal by Andersen of the Capital Region | 88 | 4.8★ (669) | Fairfax, 11 mi away | — | — |
| 8 | Window Nation | 88 | 4.5★ (1,235) | Lorton, 19 mi away | 24/7 | — |
| 9 | Lumina Glass & Windows | 88 | 5.0★ (107) | Washington, D.C., 20 mi away | 24/7 | — |
| 10 | Virginia Glass Window | 87 | 5.0★ (24) | Merrifield, 3 mi away | 24/7 | — |
The 621 best window installers in Herndon, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Based in Germantown, 15 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., 20 mi away
89/100CR 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, 19 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, 16 mi away
88/100CR 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 Chantilly, 6 mi away
88/100CR ScoreRanked #6 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 Fairfax, 11 mi away
88/100CR ScoreRanked #7 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 Lorton, 19 mi away
88/100CR ScoreRanked #8 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 Washington, D.C., 20 mi away
88/100CR ScoreRanked #9 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 Merrifield, 3 mi away
87/100CR ScoreRanked #10 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 Alexandria, 18 mi away
87/100CR ScoreRanked #11 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 Dale City, 23 mi away
87/100CR ScoreRanked #12 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., 22 mi away
87/100CR ScoreRanked #13 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., 25 mi away
87/100CR ScoreRanked #14 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 Aspen Hill, 15 mi away
87/100CR ScoreRanked #15 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 Arlington, 18 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
Based in Silver Spring, 21 mi away
87/100CR ScoreRanked #17 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 Washington, D.C., 19 mi away
87/100CR ScoreRanked #18 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
#19 Pro Glass Repair
Based in Washington, D.C., 19 mi away
87/100CR ScoreRanked #19 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 Annandale, 8 mi away
86/100CR ScoreRanked #20 because of its Google rating and availability: 4.7★ from 44 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
- 4.7★ from 44 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Arlington, 14 mi away
86/100CR ScoreRanked #21 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 Falls Church, 14 mi away
86/100CR ScoreRanked #22 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
#23 DMV Pro Glass
Based in Dale City, 20 mi away
86/100CR ScoreRanked #23 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 Gaithersburg, 15 mi away
86/100CR ScoreRanked #24 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 Darnestown, 17 mi away
86/100CR ScoreRanked #25 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
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 621 ranked window installers here; the rest are on their profiles.
Also serving Herndon
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 |
|---|---|---|
| Builders Siding Co | 5.0★ (2) | 8 mi |
| CAPITOL REMODELING LLC | 5.0★ (6) | In Herndon |
| E and J Contractors LLC | 5.0★ (1) | In Herndon |
| Fish Window Cleaning | 5.0★ (2) | 15 mi |
| Herndon Appliance Repair | 4.8★ (210) | In Herndon |
| Home Services at The Home Depot | 1.0★ (2) | 5 mi |
| Home Services at The Home Depot | 5.0★ (2) | 10 mi |
| Kemper Carpet & Flooring Warehouse | 5.0★ (2) | 14 mi |
| Keville Enterprises Inc | 5.0★ (1) | In Herndon |
| Meadows Farms Nurseries and Landscape | 4.4★ (185) | In Herndon |
| Parker Cleaning & Restoration | 4.7★ (12) | In Herndon |
| PROFIX WINDOWS & DOORS SERVICES | 5.0★ (2) | 9 mi |
| Rose Roofing | In Herndon | |
| Sears Heating and Air Conditioning | 3.0★ (2) | In Herndon |
| Signature Design Interiors | 5.0★ (29) | In Herndon |
| Smart Home Improvement DMV | 5.0★ (2) | 14 mi |
| Stanek Windows | 3.0★ (2) | 15 mi |
| West Park Supplies | 2.5★ (2) | 13 mi |
| WG Home Remodeling | 5.0★ (2) | 8 mi |
| Whiting-Turner Contracting Company | In Herndon |
How much do window installers cost in Herndon?
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 Herndon window installers
We scored 621 Herndon 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 Herndon 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 Herndon: frequently asked questions
Who is the best window installer in Herndon?
By CR Score, the highest-ranked window installer in Herndon, VA is Kennedy Locksmith with a CR Score of 91/100. 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 621 window installers on 8 factors, last updated October 22, 2026.
How many window installers are there in Herndon?
ContractorsRanked ranks 621 window installers serving Herndon, VA. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which window installers in Herndon are open 24/7?
103 ranked window installers in Herndon 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 Herndon work on weekends?
416 of 621 ranked window installers post Saturday hours and 242 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 Herndon?
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 Herndon window installers have?
The median Google rating among 621 rated window installers in Herndon is 4.9★, with a median of 32 reviews. American Home Contractors has the most, 3,700 reviews, and ranks #27. 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 Herndon count in this ranking?
Yes, if they are within 40 mi of the Herndon 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 Herndon
- October 2026: CR Scores recalculated for 621 window installers serving Herndon.
- October 2026: 1 duplicate listing merged.
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