61/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 81 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 81 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 8 AM–5 PM
Best Insulation Contractors in Greenwich, CT (2026)
115 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Greenwich: Discount Insulation Company, CR Score 61/100; 5.0★ from 81 Google reviews; open 7 days a week.
- 7
Best for emergencies (open 24/7): George insulation, posts 24/7 hours; ranked #7 of 115.
- 2
Most-reviewed: EcoShield Pest Solutions, 5,457 Google reviews at 4.8★, the most of 115 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
115 Greenwich insulation contractors are ranked here by CR Score, from ten published factors. 11 are open 24/7, 88 open Saturdays and 49 open Sundays, based on posted hours. The median Google rating is 5.0★ across 115 rated businesses.
Top 10 insulation contractors in Greenwich at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Discount Insulation Company | 61 | 5.0★ (81) | Greenwich | Sat · Sun · Evenings | Overall |
| 2 | EcoShield Pest Solutions | 59 | 4.8★ (5,457) | Hicksville, 20 mi away | Sat | Most reviews |
| 3 | Koala Insulation of the Sound Shore | 58 | 5.0★ (161) | Port Chester, 3 mi away | — | — |
| 4 | Nu-Way Insulation | 57 | 4.9★ (56) | Larchmont, 10 mi away | Sat · Sun | — |
| 5 | Energy Management Solutions | 57 | 4.9★ (171) | Valley Cottage, 18 mi away | Sat · Sun · Evenings | — |
| 6 | The Home Insulators of New Rochelle | 57 | 5.0★ (8) | Greenwich | Sat · Sun · Evenings | — |
| 7 | George insulation | 57 | 5.0★ (4) | Port Chester, 3 mi away | 24/7 | Emergencies |
| 8 | The Home Insulators of Pelham | 56 | 5.0★ (6) | Greenwich | Sat · Sun · Evenings | — |
| 9 | Innovative Air Solutions Inc. | 56 | 4.9★ (976) | Larchmont, 13 mi away | 24/7 | — |
| 10 | Sono Spray Foam Insulation | 56 | 4.9★ (33) | Norwalk, 12 mi away | Sat · Sun · Evenings | — |
The 115 best insulation contractors in Greenwich, 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 Hicksville, 20 mi away
59/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 5,457 Google reviews, the most in Greenwich.
- 4.8★ from 5,457 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 9 AM–1 PM · Sun closed
- Address
- 1 Enterprise Pl # E, Hicksville, NY 11801
Based in Port Chester, 3 mi away
58/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 161 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 161 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 255 S Regent St, Port Chester, NY 10573
Based in Larchmont, 10 mi away
57/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 56 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 56 Google reviews
- Hours
- Mon–Sun 9 AM–5 PM
- Address
- 1999 Palmer Ave, Larchmont, NY 10538
Based in Valley Cottage, 18 mi away
57/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 171 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 171 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 704 Executive Blvd Unit I, Valley Cottage, NY 10989
Based in Greenwich
57/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 8 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Port Chester, 3 mi away
57/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 4 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 130 Oak St, Port Chester, NY 10573
Based in Greenwich
56/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 6 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Larchmont, 13 mi away
56/100CR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 976 Google reviews.
- 4.9★ from 976 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11 Kimball Pl, Mt Vernon, NY 10550
Based in Norwalk, 12 mi away
56/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 33 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 8 AM–5 PM · Sun 9 AM–12:30 PM
- Address
- 10 Devon Ave, Norwalk, CT 06850
Based in Greenwich
56/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 12 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 9 AM–4 PM · Sun closed
Based in Greenwich
55/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 3 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Greenwich
55/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 3 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Greenburgh, 8 mi away
55/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 12 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Mahopac, 23 mi away
55/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 262 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 262 Google reviews
- Hours
- Mon–Sat 7 AM–6 PM · Sun closed
- Address
- 2986 Navajo St, Yorktown Heights, NY 10598
Based in Stamford, 6 mi away
55/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 7 Google reviews
- Hours
- Mon–Wed 7:30 AM–9 PM · Thu 7:30 AM–9:30 PM · Fri–Sat 7 AM–9 PM · Sun 8 AM–9 PM
- Address
- 40 Clarks Hill Ave, Stamford, CT 06902
Based in Budd Lake, 9 mi away
55/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 11 Google reviews
- Hours
- Mon–Sun 7:30 AM–8 PM
#18 Pro Legacy Corp
Based in Greenburgh, 6 mi away
55/100CR ScoreRanked #18 because of its Google rating and review volume: 5.0★ from 100 Google reviews.
- 5.0★ from 100 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1 New King St, West Harrison, NY 10604
Based in Greenburgh, 6 mi away
54/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Briarcliff Manor, 13 mi away
54/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 111 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 111 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 6 Elizabeth Ct, Briarcliff Manor, NY 10510
Based in Yonkers, 14 mi away
54/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 17 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 57 Alida St, Yonkers, NY 10704
Based in Stamford, 8 mi away
54/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 18 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 18 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–3 PM · Sun closed
- Address
- 53 Davenport Ridge Ln, Stamford, CT 06903
Based in Farmingdale, 24 mi away
54/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.5★ from 46 Google reviews, listed on Google as “Insulation contractor”.
- 4.5★ from 46 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 200 Broadhollow Rd, Farmingdale, NY 11735
Based in Mount Vernon, 17 mi away
54/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 6 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5987 Broadway, Bronx, NY 10471
Based in Stamford, 7 mi away
54/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.8★ from 11 Google reviews, listed on Google as “Insulation contractor”.
- 4.8★ from 11 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat 7 AM–1 PM · Sun closed
- Address
- 19 De Bera Ln, Stamford, CT 06902
Insulation contractors ranked #26 to #50
#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 115 ranked insulation contractors here; the rest are on their profiles.
Also serving Greenwich
20 more insulation contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
How much do insulation contractors cost in Greenwich?
National price ranges in USD, not adjusted for Greenwich. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Attic insulation | $1,700 | $2,100 | $2,500 | Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range | October 2026 |
How we ranked Greenwich insulation contractors
We scored 115 Greenwich insulation contractors 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 Greenwich 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 |
Insulation contractors in Greenwich: frequently asked questions
Who is the best insulation contractor in Greenwich?
By CR Score, the highest-ranked insulation contractor in Greenwich, CT is Discount Insulation Company with a CR Score of 61/100. It has 5.0★ from 81 Google reviews. It is open 7 days a week. EcoShield Pest Solutions (#2) and Koala Insulation of the Sound Shore (#3) follow. We ranked 115 insulation contractors on ten factors, last updated October 22, 2026.
How many insulation contractors are there in Greenwich?
ContractorsRanked ranks 115 insulation contractors serving Greenwich, CT. 6 of them are based in Greenwich; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which insulation contractors in Greenwich are open 24/7?
11 ranked insulation contractors in Greenwich post 24/7 hours. The highest-ranked are George insulation (#7), Innovative Air Solutions Inc. (#9) and Pro Legacy Corp (#18). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in Greenwich work on weekends?
88 of 115 ranked insulation contractors post Saturday hours and 49 post Sunday hours. The highest-ranked open Saturdays are Discount Insulation Company (#1), EcoShield Pest Solutions (#2) and Nu-Way Insulation (#4). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Greenwich?
Attic insulation typically costs $1,700 to $2,500, with $2,100 typical (Per attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range). This is a national range, not adjusted for Greenwich. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Greenwich insulation contractors have?
The median Google rating among 115 rated insulation contractors in Greenwich is 5.0★, with a median of 11 reviews. EcoShield Pest Solutions has the most, 5,457 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank insulation contractors?
Each insulation contractor 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 insulation contractors outside Greenwich count in this ranking?
Yes, if they are within 25 mi of the Greenwich city center, our service radius for insulation contractors. 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.
Update log for Greenwich
- October 2026: CR Scores recalculated for 115 insulation contractors serving Greenwich.
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