481 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Manassas: Kennedy Locksmith, CR Score 62/100; 4.9★ from 980 Google reviews; open 24/7.
Best for emergencies (open 24/7): Window Nation, posts 24/7 hours; ranked #2 of 481.
Most-reviewed: Thompson Creek Window Company Lanham, 3,143 Google reviews at 4.5★, the most of 481 ranked; ranked #24.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
481 Manassas window installers are ranked here by CR Score, from ten published factors. 87 are open 24/7, 323 open Saturdays and 170 open Sundays, based on posted hours. The median Google rating is 4.9★ across 481 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Kennedy Locksmith | 62 | 4.9★ (980) | Aspen Hill, 26 mi away | 24/7 | Overall |
| 2 | Window Nation | 62 | 4.5★ (1,235) | Lorton, 16 mi away | 24/7 | Emergencies |
| 3 | DMV Window Repairs LLC | 61 | 5.0★ (115) | Dale City, 13 mi away | 24/7 | — |
| 4 | Kennedy Glass in DC | 61 | 4.9★ (382) | Washington, D.C., 27 mi away | 24/7 | — |
| 5 | Quality Window & Glass Repair LLC | 61 | 5.0★ (392) | Germantown, 31 mi away | 24/7 | — |
| 6 | Renewal by Andersen of the Capital Region | 60 | 4.9★ (1,041) | North Bethesda, 29 mi away | Sat · Sun | — |
| 7 | DMV Pro Glass | 60 | 4.9★ (63) | Dale City, 10 mi away | 24/7 | — |
| 8 | Renewal by Andersen of the Capital Region | 60 | 4.8★ (669) | Fairfax, 16 mi away | — | — |
| 9 | American Home Contractors | 60 | 4.9★ (2,385) | Chantilly, 10 mi away | 24/7 | — |
| 10 | Mello Contracting, LLC | 60 | 5.0★ (44) | Manassas | Sat · Sun | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 980 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lorton, 16 mi away
Ranked #2 because of its Google rating and trade focus: 4.5★ from 1,235 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dale City, 13 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 115 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, D.C., 27 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 382 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Germantown, 31 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 392 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in North Bethesda, 29 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 1,041 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dale City, 10 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 63 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfax, 16 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 669 Google reviews, listed on Google as “Window installation service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Chantilly, 10 mi away
Ranked #9 because of its Google rating and review volume: 4.9★ from 2,385 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Manassas
Ranked #10 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Alexandria, 19 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 372 Google reviews, listed on Google as “Window installation service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Manassas
Ranked #12 because of its Google rating and trade focus: 4.9★ from 110 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Chantilly, 10 mi away
Ranked #13 because of its Google rating and trade focus: 4.8★ from 396 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Annandale, 8 mi away
Ranked #14 because of its Google rating and trade focus: 4.7★ from 44 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, D.C., 26 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 107 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arlington, 13 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dale City, 7 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Silver Spring, 32 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 416 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, D.C., 28 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 101 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dale City, 9 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arlington, 23 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 80 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gaithersburg, 35 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 165 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Washington, D.C., 26 mi away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 116 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lanham, 37 mi away
Ranked #24 because of its Google rating and review volume: 4.5★ from 3,143 Google reviews, the most in Manassas.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Darnestown, 12 mi away
Ranked #25 because of its Google rating and trade focus: 4.9★ from 60 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
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 |
We scored 481 Manassas 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 23, 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 Manassas 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 |