58/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 546 Google reviews, the most in Belfast.
- 4.8★ from 546 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 615 Odlin Rd #5, Bangor, ME 04401
Best Window Installers in Belfast, ME (2026)
29 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Belfast: Renewal by Andersen of Greater Maine, CR Score 58/100; 4.8★ from 546 Google reviews.
- 15
Most-reviewed: James & Whitney Co. - Chelsea, 337 Google reviews at 4.8★, the most of 29 ranked after Renewal by Andersen of Greater Maine; ranked #15.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
29 Belfast window installers are ranked here by CR Score, from ten published factors. 10 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.7★ across 29 rated businesses.
Top 10 window installers in Belfast at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Renewal by Andersen of Greater Maine | 58 | 4.8★ (546) | Bangor, 26 mi away | — | Overall |
| 2 | Dirigo Glass Inc | 58 | 4.7★ (67) | Belfast | — | — |
| 3 | Portland Glass of Ellsworth | 55 | 4.8★ (175) | Ellsworth, 31 mi away | — | — |
| 4 | Sunrise Glass Co | 55 | 4.9★ (94) | Brewer, 28 mi away | — | — |
| 5 | Dirigo Glass | 54 | 4.8★ (53) | Rockland, 21 mi away | — | — |
| 6 | Mcguire Brothers Carpentry | 54 | 5.0★ (13) | Orono, 21 mi away | Sat | — |
| 7 | Sunrise Glass Co | 54 | 4.6★ (108) | Ellsworth, 30 mi away | — | — |
| 8 | Acadia Craftsman | 53 | 5.0★ (15) | Ellsworth, 24 mi away | Sat | — |
| 9 | Robertson Glass Co | 53 | 4.9★ (54) | Brewer, 31 mi away | — | — |
| 10 | Ardent Auto Glass | 53 | 5.0★ (9) | Brewer, 31 mi away | Sat · Sun | — |
The 29 best window installers in Belfast, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Belfast
58/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 67 Google reviews, listed on Google as “Window installation service”.
- 4.7★ from 67 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 100 Lincolnville Ave, Belfast, ME 04915
Based in Ellsworth, 31 mi away
55/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 175 Google reviews, listed on Google as “Window installation service”.
- 4.8★ from 175 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun closed
- Address
- 32 Bar Harbor Rd, Ellsworth, ME 04605
Based in Brewer, 28 mi away
55/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 94 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 94 Google reviews
- Hours
- Mon–Fri 7:30 AM–4:30 PM · Sat–Sun closed
- Address
- 590 Wilson St, Brewer, ME 04412
#5 Dirigo Glass
Based in Rockland, 21 mi away
54/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 53 Google reviews, listed on Google as “Window installation service”.
- 4.8★ from 53 Google reviews
- Hours
- Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
- Address
- 1120 Commercial St, Rockport, ME 04856
Based in Orono, 21 mi away
54/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 13 Google reviews
- Hours
- Mon–Sat 7 AM–5 PM · Sun closed
Based in Ellsworth, 30 mi away
54/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.6★ from 108 Google reviews, listed on Google as “Window installation service”.
- 4.6★ from 108 Google reviews
- Hours
- Mon–Fri 7:30 AM–4:30 PM · Sat–Sun closed
- Address
- 11 Falls Ct, Ellsworth, ME 04605
Based in Ellsworth, 24 mi away
53/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 15 Google reviews
- Hours
- Mon–Fri 7:30 AM–5 PM · Sat 9 AM–5 PM · Sun closed
Based in Brewer, 31 mi away
53/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 54 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 54 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 163 Clewleyville Rd, Eddington, ME 04428
Based in Brewer, 31 mi away
53/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Window installation service”.
- 5.0★ from 9 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 1111 N Main St, Brewer, ME 04412
#11 Pen-Bay Glass
Based in Rockland, 24 mi away
53/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 30 Google reviews, listed on Google as “Window installation service”.
- 4.9★ from 30 Google reviews
- Hours
- Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
- Address
- 328 Pleasant St, Rockland, ME 04841
Based in Waterville, 34 mi away
52/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.6★ from 68 Google reviews, listed on Google as “Window installation service”.
- 4.6★ from 68 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 350 Kennedy Memorial Dr, Waterville, ME 04901
Based in Belfast
51/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 20 Google reviews
- Hours
- Mon–Fri 6:30 AM–3 PM · Sat 8 AM–3 PM · Sun closed
- Address
- 28 Banks Rd, Belfast, ME 04915
Based in Waterville, 32 mi away
51/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.3★ from 60 Google reviews, listed on Google as “Window installation service”.
- 4.3★ from 60 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 153 College Ave, Waterville, ME 04901
Based in Auburn, 39 mi away
51/100CR ScoreRanked #15 because of its Google rating and review volume: 4.8★ from 337 Google reviews.
- 4.8★ from 337 Google reviews
- Hours
- Mon–Sat 8 AM–7 PM · Sun closed
- Address
- 46 River Rd, Chelsea, ME 04330
Based in Brewer, 27 mi away
50/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.6★ from 30 Google reviews, listed on Google as “Gutter cleaning service”.
- 4.6★ from 30 Google reviews
- Hours
- Mon–Fri 6 AM–6 PM · Sat 6 AM–3 PM · Sun closed
- Address
- 30 Industrial Plaza Dr suite 6, Brewer, ME 04412
Based in Rockland, 26 mi away
49/100CR ScoreRanked #17 because of its Google rating and trade focus: 3.8★ from 17 Google reviews, listed on Google as “Window installation service”.
- 3.8★ from 17 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 81 Elm St, South Thomaston, ME 04858
Based in Auburn, 39 mi away
48/100CR ScoreRanked #18 because of its Google rating and review volume: 4.7★ from 274 Google reviews.
- 4.7★ from 274 Google reviews
- Hours
- Mon–Thu 8 AM–5 PM · Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 672 River Rd, Chelsea, ME 04330
Based in Rockland, 26 mi away
48/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Window installation service”.
- 4.7★ from 3 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 52 Cushing Rd, Warren, ME 04864
Based in Waterville, 30 mi away
46/100CR ScoreRanked #20 because of its Google rating and trade focus: 3.9★ from 9 Google reviews, listed on Google as “Roofing contractor”.
- 3.9★ from 9 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 40 Benton Plaza, Neck Rd, Benton, ME 04901
#21 Mainely LLC
Based in Waterville, 33 mi away
46/100CR ScoreRanked #21 because of its Google rating and review volume: 3.6★ from 57 Google reviews.
- 3.6★ from 57 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 8 AM–3 PM · Sun 9 AM–1 PM
- Address
- Main St, Waterville, ME 04901
Based in Winslow, 26 mi away
46/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Roofing contractor”.
- 4.2★ from 5 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 9 AM–5 PM
Based in Bangor, 22 mi away
45/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Roofing contractor”.
- 5.0★ from 10 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun closed
- Address
- 302 Canaan Rd, Hampden, ME 04444
#24 CJG Contractors
Based in Bangor, 28 mi away
44/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Roofing contractor”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Sat 7 AM–6 PM · Sun closed
- Address
- 584 Union St, Bangor, ME 04401
Based in Ellsworth, 31 mi away
44/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.5★ from 19 Google reviews, listed on Google as “Roofing contractor”.
- 4.5★ from 19 Google reviews
- Hours
- Mon–Fri 8 AM–4 PM · Sat–Sun closed
- Address
- 8 Bar Harbor Rd, Trenton, ME 04605
All 29 window installers
#1 to #25 are shown in full above. Here are #26 to #29, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Williams Construction and Roofing Co. | 43 | 4.5★ (4) | 21 mi |
| 27 | Quality Homes & Improvements | 42 | 5.0★ (4) | 31 mi |
| 28 | Paul Lessard Renovations | 40 | 3.0★ (4) | 35 mi |
| 29 | J Rich Builders LLC | 40 | 3.0★ (6) | 36 mi |
Also serving Belfast
9 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 |
|---|---|---|
| Build Rite Construction | 32 mi | |
| CareFree Window & Siding | 5.0★ (2) | 27 mi |
| Home Performance Plus | 33 mi | |
| Keyes Roofing & Construction | 5.0★ (1) | 23 mi |
| KNM Builders & Cleaning Services | 32 mi | |
| Mr. Window & Gutters | 27 mi | |
| Need-A-Roof | 5.0★ (1) | 29 mi |
| Pella Window & Door | 4.5★ (2) | 31 mi |
| Windows Plus | 1.0★ (1) | 32 mi |
How much do window installers cost in Belfast?
Typical prices in USD, adjusted for Maine 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 |
How we ranked Belfast window installers
We scored 29 Belfast 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 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 Belfast 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 |
Window installers in Belfast: frequently asked questions
Who is the best window installer in Belfast?
By CR Score, the highest-ranked window installer in Belfast, ME is Renewal by Andersen of Greater Maine with a CR Score of 58/100. It has 4.8★ from 546 Google reviews. Dirigo Glass Inc (#2) and Portland Glass of Ellsworth (#3) follow. We ranked 29 window installers on ten factors, last updated October 22, 2026.
How many window installers are there in Belfast?
ContractorsRanked ranks 29 window installers serving Belfast, ME. 2 of them are based in Belfast; the rest serve it from nearby towns. Another 9 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which window installers in Belfast work on weekends?
10 of 29 ranked window installers post Saturday hours and 3 post Sunday hours. The highest-ranked open Saturdays are Mcguire Brothers Carpentry (#6), Acadia Craftsman (#8) and Ardent Auto Glass (#10). Posted hours are office hours; crews may book weekend jobs separately.
How much does window replacement cost in Belfast?
Window replacement typically costs $3,410 to $11,760, with $7,300 typical (Per project (several windows): typical range of customer-reported projects. US national range × 0.99 New England factor (2025 Cost vs. Value Report)). The range is adjusted for Maine. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Belfast window installers have?
The median Google rating among 29 rated window installers in Belfast is 4.7★, with a median of 20 reviews. Renewal by Andersen of Greater Maine has the most, 546 reviews, and ranks #1. 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 ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do window installers outside Belfast count in this ranking?
Yes, if they are within 40 mi of the Belfast 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.
Can window installers pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Belfast
- October 2026: CR Scores recalculated for 29 window installers serving Belfast.
More window installers and Belfast pages
Window installers near Belfast
- Window installers in Rockland, ME12 ranked
- Window installers in Bangor, ME21 ranked
- Window installers in Brewer, ME21 ranked
- Window installers in Ellsworth, ME17 ranked
- Window installers in Winslow, ME31 ranked
- Window installers in Waterville, ME32 ranked
- Window installers in Orono, ME20 ranked
- Window installers in Augusta, ME40 ranked
- Window installers in Old Town, ME18 ranked
- Window installers in Gardiner, ME36 ranked
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