312 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Spencer: Renewal by Andersen of Boston, CR Score 88/100; 4.8★ from 3,420 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): J and J Windows and Doors LLC, posts 24/7 hours; ranked #3 of 312.
Most-reviewed: Power Home Remodeling, 4,159 Google reviews at 4.7★, the most of 312 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
312 Spencer window installers are ranked here by CR Score, from 8 published factors. 36 are open 24/7, 200 open Saturdays and 89 open Sundays, based on posted hours. The median Google rating is 4.9★ across 312 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Renewal by Andersen of Boston | 88 | 4.8★ (3,420) | Northborough, 20 mi away | Sat · Sun | Overall |
| 2 | Renewal by Andersen Window Replacement | 87 | 4.9★ (2,435) | Smithfield, 33 mi away | Sat · Sun · Evenings | — |
| 3 | J and J Windows and Doors LLC | 86 | 5.0★ (15) | Ludlow, 10 mi away | 24/7 | Emergencies |
| 4 | Busy Bee Window & Gutter Cleaning | 84 | 5.0★ (410) | Leicester, 12 mi away | Sat · Sun · Evenings | — |
| 5 | UBrothers Construction: Siding, Roofing, Doors and Windows, Decks | 83 | 5.0★ (406) | Framingham, 28 mi away | 24/7 | — |
| 6 | Above & Beyond Window Cleaning | 83 | 5.0★ (260) | Billerica, 36 mi away | 24/7 | — |
| 7 | Azevedo Construction Inc | 83 | 4.5★ (16) | Mansfield Center, 21 mi away | 24/7 | — |
| 8 | Northeast Home & Energy | 83 | 4.9★ (225) | Grafton, 15 mi away | 24/7 | — |
| 9 | D.W. Installations LLC | 82 | 5.0★ (17) | Acton, 27 mi away | 24/7 | — |
| 10 | Power Home Remodeling | 82 | 4.7★ (4,159) | Waltham, 38 mi away | Sat · Evenings | Most reviews |
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 trade focus: 4.8★ from 3,420 Google reviews, listed on Google as “Window installation service”.
Based in Smithfield, 33 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 2,435 Google reviews, listed on Google as “Window installation service”.
Based in Ludlow, 10 mi away
Ranked #3 because of its Google rating and availability: 5.0★ from 15 Google reviews, open 24/7.
Based in Leicester, 12 mi away
Ranked #4 because of its Google rating and availability: 5.0★ from 410 Google reviews, open 7 days a week.
Based in Framingham, 28 mi away
Ranked #5 because of its Google rating and availability: 5.0★ from 406 Google reviews, open 24/7.
Based in Billerica, 36 mi away
Ranked #6 because of its Google rating and availability: 5.0★ from 260 Google reviews, open 24/7.
Based in Mansfield Center, 21 mi away
Ranked #7 because of its Google rating and availability: 4.5★ from 16 Google reviews, open 24/7.
Based in Grafton, 15 mi away
Ranked #8 because of its Google rating and availability: 4.9★ from 225 Google reviews, open 24/7.
Based in Acton, 27 mi away
Ranked #9 because of its Google rating and availability: 5.0★ from 17 Google reviews, open 24/7.
Based in Waltham, 38 mi away
Ranked #10 because of its Google rating and review volume: 4.7★ from 4,159 Google reviews, the most Google reviews on this list (4,159).
Based in Arlington, 21 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Window installation service”.
Based in Northampton, 33 mi away
Ranked #12 because of its Google rating and availability: 4.4★ from 27 Google reviews, open 24/7.
Based in Westfield, 38 mi away
Ranked #13 because of its Google rating and availability: 5.0★ from 453 Google reviews, open 24/7.
Based in Charlton, 8 mi away
Ranked #14 because of its Google rating and availability: 4.9★ from 263 Google reviews, open 7 days a week.
Based in Natick, 34 mi away
Ranked #15 because of its Google rating and availability: 4.5★ from 15 Google reviews, open 24/7.
Based in Fitchburg, 25 mi away
Ranked #16 because of its Google rating and availability: 4.8★ from 265 Google reviews, open 24/7.
Based in Holliston, 28 mi away
Ranked #17 because of its Google rating and review volume: 4.8★ from 2,938 Google reviews, 2,938 Google reviews.
Based in Auburn, 8 mi away
Ranked #18 because of its Google rating and availability: 5.0★ from 26 Google reviews, open 24/7.
Based in Uxbridge, 31 mi away
Ranked #19 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
Based in Springfield, 33 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Window installation service”.
Based in Needham, 39 mi away
Ranked #21 because of its Google rating and availability: 4.8★ from 859 Google reviews, open 24/7.
Based in Seekonk, 25 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 26 Google reviews, listed on Google as “Window installation service”.
Based in Auburn, 8 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Window installation service”.
Based in Hebron, 36 mi away
Ranked #24 because of its Google rating and availability: 4.8★ from 521 Google reviews, open 24/7.
Based in Springfield, 27 mi away
Ranked #25 because of its Google rating and trade focus: 4.8★ from 22 Google reviews, listed on Google as “Window installation service”.
Typical prices in USD, adjusted for Massachusetts with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,410 | $7,300 | $11,760 | Per project (several windows): typical range of customer-reported projects. US national range × 0.99 New England factor (2025 Cost vs. Value Report) | October 2026 |
We scored 312 Spencer 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 Spencer 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 |