358 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Westminster: Window Nation, CR Score 89/100; 4.7★ from 4,186 Google reviews; open 24/7.
Best for emergencies (open 24/7): Quality Window & Glass Repair LLC, posts 24/7 hours; ranked #2 of 358.
Most-reviewed: American Home Contractors, 3,700 Google reviews at 4.9★, the most of 358 ranked after Window Nation; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
358 Westminster window installers are ranked here by CR Score, from 8 published factors. 59 are open 24/7, 228 open Saturdays and 121 open Sundays, based on posted hours. The median Google rating is 4.8★ across 358 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Window Nation | 89 | 4.7★ (4,186) | Glen Burnie, 34 mi away | 24/7 | Overall |
| 2 | Quality Window & Glass Repair LLC | 88 | 5.0★ (392) | Germantown, 32 mi away | 24/7 | Emergencies |
| 3 | Safety Glass Repair | 87 | 5.0★ (165) | Gaithersburg, 28 mi away | 24/7 | — |
| 4 | Safety Glass Repair | 86 | 5.0★ (97) | Catonsville, 28 mi away | 24/7 | — |
| 5 | Zen Windows Washington DC | 86 | 5.0★ (119) | Washington, D.C., 30 mi away | 24/7 | — |
| 6 | West Shore Home | 85 | 4.8★ (1,036) | Arbutus, 30 mi away | Sat · Sun · Evenings | — |
| 7 | American Home Contractors | 85 | 4.9★ (3,700) | Washington, D.C., 30 mi away | 24/7 | Most reviews |
| 8 | WeatherMaster Windows | 85 | 4.6★ (262) | Baltimore, 30 mi away | 24/7 | — |
| 9 | Roof Right Inc. | 84 | 4.8★ (607) | Hampstead, 8 mi away | 24/7 | — |
| 10 | Renewal by Andersen of the Capital Region | 84 | 4.9★ (1,041) | North Bethesda, 37 mi away | Sat · Sun | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 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 in Germantown, 32 mi away
Ranked #2 because of its Google rating and availability: 5.0★ from 392 Google reviews, open 24/7.
Based in Gaithersburg, 28 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 165 Google reviews, open 24/7.
Based in Catonsville, 28 mi away
Ranked #4 because of its Google rating and availability: 5.0★ from 97 Google reviews, open 24/7.
Based in Washington, D.C., 30 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 119 Google reviews, open 24/7.
Based in Arbutus, 30 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 1,036 Google reviews, listed on Google as “Window installation service”.
Based in Washington, D.C., 30 mi away
Ranked #7 because of its Google rating and availability: 4.9★ from 3,700 Google reviews, open 24/7.
Based in Baltimore, 30 mi away
Ranked #8 because of its Google rating and availability: 4.6★ from 262 Google reviews, open 24/7.
Based in Hampstead, 8 mi away
Ranked #9 because of its Google rating and availability: 4.8★ from 607 Google reviews, open 24/7.
Based in North Bethesda, 37 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 1,041 Google reviews, listed on Google as “Window installation service”.
Based in Westminster
Ranked #11 because of its Google rating and review volume: 4.8★ from 1,809 Google reviews, 1,809 Google reviews.
Based in Aspen Hill, 32 mi away
Ranked #12 because of its Google rating and availability: 5.0★ from 50 Google reviews, open 24/7.
Based in Silver Spring, 38 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 416 Google reviews, listed on Google as “Window installation service”.
Based in Hanover, 14 mi away
Ranked #14 because of its Google rating and availability: 4.8★ from 660 Google reviews, open 24/7.
Based in Gaithersburg, 32 mi away
Ranked #15 because of its Google rating and availability: 4.8★ from 45 Google reviews, open 24/7.
Based in Baltimore, 13 mi away
Ranked #16 because of its Google rating and availability: 4.8★ from 337 Google reviews, open 24/7.
Based in Darnestown, 34 mi away
Ranked #17 because of its Google rating and trade focus: 4.9★ from 231 Google reviews, listed on Google as “Window installation service”.
Based in Frederick, 22 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 303 Google reviews, open 24/7.
Based in College Park, 39 mi away
Ranked #19 because of its Google rating and availability: 4.8★ from 159 Google reviews, open 24/7.
Based in Columbia, 27 mi away
Ranked #20 because of its Google rating and trade focus: 4.9★ from 99 Google reviews, listed on Google as “Window installation service”.
Based in Damascus, 23 mi away
Ranked #21 because of its Google rating and availability: 5.0★ from 263 Google reviews, open 24/7.
Based in Bel Air South, 23 mi away
Ranked #22 because of its Google rating and availability: 5.0★ from 9 Google reviews, open 24/7.
Based in Timonium, 23 mi away
Ranked #23 because of its Google rating and availability: 4.7★ from 1,074 Google reviews, open 24/7.
Based in Ashton-Sandy Spring, 27 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 90 Google reviews, listed on Google as “Window installation service”.
Based in Hunt Valley, 19 mi away
Ranked #25 because of its Google rating and availability: 4.9★ from 185 Google reviews, open 24/7.
#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 358 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 |
|---|---|---|
| Bawa General Contracting LLC | 4.7★ (27) | In Westminster |
| Boston Builders,Inc. | In Westminster | |
| Hill & Hill Building & Remodeling | 5.0★ (14) | In Westminster |
| J E Richards Construction Co | 5.0★ (2) | In Westminster |
| JNM Construction Painting LLC | In Westminster | |
| Kingan Klean LLC | 5.0★ (248) | In Westminster |
| M. Cimino Contractors LLC | 4.9★ (35) | In Westminster |
| Miller Contracting | 2.8★ (4) | In Westminster |
| My Gutter Doctor | 4.9★ (60) | In Westminster |
| Revival Building & Remodeling | 5.0★ (4) | In Westminster |
| Robey Incorporated | 4.6★ (22) | In Westminster |
| Rush and Sons LLC | 5.0★ (2) | In Westminster |
| Seipp Roofing, LLC | 4.9★ (64) | In Westminster |
| Sheldon & Sons Painters of Westminster | In Westminster | |
| The Gutter Guys | In Westminster | |
| Tim Kyle Electric, Heating & Cooling | 5.0★ (2,777) | In Westminster |
| Timothy Hatfield Building & Remodeling, INC. | In Westminster | |
| TRW Contracting | 4.7★ (9) | In Westminster |
| UTZ Remodeling | In Westminster | |
| Window Wiz | In Westminster |
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 |
We scored 358 Westminster 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 Westminster 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 |