611 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Merrifield: Kennedy Locksmith, CR Score 64/100; 4.9★ from 980 Google reviews; open 24/7.
Best for emergencies (open 24/7): Kennedy Glass in DC, posts 24/7 hours; ranked #2 of 611.
Most-reviewed: Window Nation, 4,186 Google reviews at 4.7★, the most of 611 ranked; ranked #9.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
611 Merrifield window installers are ranked here by CR Score, from ten published factors. 110 are open 24/7, 407 open Saturdays and 219 open Sundays, based on posted hours. The median Google rating is 4.9★ across 611 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Kennedy Locksmith | 64 | 4.9★ (980) | Aspen Hill, 10 mi away | 24/7 | Overall |
| 2 | Kennedy Glass in DC | 63 | 4.9★ (382) | Washington, D.C., 11 mi away | 24/7 | Emergencies |
| 3 | Renewal by Andersen of the Capital Region | 62 | 4.8★ (669) | Fairfax, 1 mi away | — | — |
| 4 | Window Nation | 62 | 4.5★ (1,235) | Lorton, 10 mi away | 24/7 | — |
| 5 | Renewal by Andersen of the Capital Region | 62 | 4.9★ (1,041) | North Bethesda, 14 mi away | Sat · Sun | — |
| 6 | Quality Window & Glass Repair LLC | 62 | 5.0★ (392) | Germantown, 21 mi away | 24/7 | — |
| 7 | Old Town Glass & Window Repair | 62 | 5.0★ (372) | Alexandria, 7 mi away | — | — |
| 8 | Lumina Glass & Windows | 61 | 5.0★ (107) | Washington, D.C., 11 mi away | 24/7 | — |
| 9 | Window Nation | 61 | 4.7★ (4,186) | Glen Burnie, 38 mi away | 24/7 | Most reviews |
| 10 | KELEMER BROTHERS REPLACEMENT WINDOWS | 61 | 5.0★ (416) | Silver Spring, 16 mi away | Sat · Sun · Evenings | — |
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 Washington, D.C., 11 mi away
Ranked #2 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 Fairfax, 1 mi away
Ranked #3 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 Lorton, 10 mi away
Ranked #4 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 North Bethesda, 14 mi away
Ranked #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 8 of 10 factors; credentials and recency not yet collected.
Based in Germantown, 21 mi away
Ranked #6 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 Alexandria, 7 mi away
Ranked #7 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 Washington, D.C., 11 mi away
Ranked #8 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 Glen Burnie, 38 mi away
Ranked #9 because of its Google rating and review volume: 4.7★ from 4,186 Google reviews, the most in Merrifield.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Silver Spring, 16 mi away
Ranked #10 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., 13 mi away
Ranked #11 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 Arlington, 8 mi away
Ranked #12 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 Dale City, 15 mi away
Ranked #13 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., 11 mi away
Ranked #14 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 Falls Church, 3 mi away
Ranked #15 because of its Google rating and trade focus: 4.8★ from 50 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., 10 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 74 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lanham, 22 mi away
Ranked #17 because of its Google rating and trade focus: 4.5★ from 3,143 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Gaithersburg, 22 mi away
Ranked #18 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 Merrifield
Ranked #19 because of its Google rating and trade focus: 5.0★ 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 Arlington, 5 mi away
Ranked #20 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 College Park, 18 mi away
Ranked #21 because of its Google rating and trade focus: 4.8★ from 159 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Alexandria, 6 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 71 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., 23 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 119 Google reviews, listed on Google as “Window installation service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Darnestown, 17 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 231 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, 14 mi away
Ranked #25 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.
#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 611 ranked window installers here; the rest are on their profiles.
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) | 17 mi |
| Allied Auto Glass of D.C | 5.0★ (2) | 10 mi |
| AZE Home Improvement, LLC | 5.0★ (2) | 9 mi |
| Builders Siding Co | 5.0★ (2) | 16 mi |
| DC Blinds & Shades | 5.0★ (2) | 15 mi |
| Fred General Painting, LLC. | 5.0★ (36) | In Merrifield |
| HiRISE WINDOWS | 3.0★ (2) | 10 mi |
| Kemper Carpet & Flooring Warehouse | 5.0★ (2) | 16 mi |
| Oriental Living | 5.0★ (2) | 11 mi |
| PROFIX WINDOWS & DOORS SERVICES | 5.0★ (2) | 4 mi |
| Reno Guys | 5.0★ (3) | In Merrifield |
| Sapphire Exteriors LLC | 5.0★ (14) | In Merrifield |
| Sears Heating and Air Conditioning | 3.0★ (2) | 10 mi |
| Sears Window Replacement | 2.5★ (2) | 7 mi |
| SG Windows and Doors LLC | 5.0★ (2) | 17 mi |
| Smart Home Improvement DMV | 5.0★ (2) | 12 mi |
| Stanek Windows | 3.0★ (2) | 14 mi |
| TriState Glassworx | 5.0★ (2) | 12 mi |
| University Painters of Fairfax | 5.0★ (27) | In Merrifield |
| WG Home Remodeling | 5.0★ (2) | 5 mi |
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 611 Merrifield 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 Merrifield 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 |