20 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Winters: Greiner Heating, Air and Electric, CR Score 59/100; 5.0★ from 1,451 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Service Champions, posts 24/7 hours; ranked #5 of 20.
Most-reviewed: HomeShield Pest Control, 500 Google reviews at 4.9★, the most of 20 ranked after Greiner Heating, Air and Electric; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
20 Winters insulation contractors are ranked here by CR Score, from ten published factors. 4 are open 24/7, 9 open Saturdays and 8 open Sundays, based on posted hours. The median Google rating is 4.9★ across 20 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Greiner Heating, Air and Electric | 59 | 5.0★ (1,451) | Dixon, 10 mi away | Sat · Sun | Overall |
| 2 | EcoGuard Pest Management - Sacramento | 58 | 4.8★ (179) | Arden-Arcade, 19 mi away | Sat · Sun · Evenings | — |
| 3 | Definition Insulation | 56 | 5.0★ (49) | Dixon, 23 mi away | Sat · Sun · Evenings | — |
| 4 | HomeShield Pest Control | 54 | 4.9★ (500) | Vacaville, 12 mi away | Sat · Evenings | Most reviews |
| 5 | Service Champions | 53 | 4.9★ (275) | West Sacramento, 24 mi away | 24/7 | Emergencies |
| 6 | MIB Heating & Air, Inc. | 53 | 5.0★ (58) | Woodland, 16 mi away | 24/7 | — |
| 7 | CEL Insulation | 51 | 5.0★ (22) | Fairfield, 20 mi away | — | — |
| 8 | Superior Painting Company | 50 | 5.0★ (3) | Fairfield, 25 mi away | Sat · Sun · Evenings | — |
| 9 | DC Acoustics & Insulation | 49 | 4.4★ (7) | Fairfield, 17 mi away | — | — |
| 10 | Reactic Restoration | 49 | 5.0★ (10) | Fairfield, 20 mi away | 24/7 | — |
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 review volume: 5.0★ from 1,451 Google reviews, the most in Winters.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arden-Arcade, 19 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 179 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Dixon, 23 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vacaville, 12 mi away
Ranked #4 because of its Google rating and review volume: 4.9★ from 500 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Sacramento, 24 mi away
Ranked #5 because of its Google rating and review volume: 4.9★ from 275 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Woodland, 16 mi away
Ranked #6 because of its Google rating and review volume: 5.0★ from 58 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 20 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 25 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 17 mi away
Ranked #9 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 20 mi away
Ranked #10 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Vacaville, 9 mi away
Ranked #11 because of its Google rating and review volume: 4.8★ from 40 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 17 mi away
Ranked #12 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 19 mi away
Ranked #13 because of its Google rating and review volume: 4.9★ from 46 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Arden-Arcade, 15 mi away
Ranked #14 because of its Google rating and trade focus: 4.4★ from 34 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 20 mi away
Ranked #15 because of its Google rating and review volume: 4.7★ from 42 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Woodland, 12 mi away
Ranked #16 because of its Google rating and trade focus: 4.1★ from 15 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Woodland, 16 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 24 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Roofing contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fairfield, 21 mi away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 3 Google reviews, listed on Google as “Corporate office”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Fairfield, 24 mi away
Ranked #20 because of its Google rating and trade focus: 2.5★ from 10 Google reviews, listed on Google as “Demolition contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
7 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.
| Business | Google rating | Distance |
|---|---|---|
| ADL Professional Insulation | 23 mi | |
| Energy Solutions Spray Foam Insulation | 23 mi | |
| Future Roofing & Remodeling | 5.0★ (2) | 23 mi |
| PEM Insulation Company, Inc. | 24 mi | |
| Pre-Insualted Metal Technolgy | 3.0★ (2) | 9 mi |
| Vacaville attic cleaning and insulation | 10 mi | |
| Will Pro Construction | In Winters |
National price ranges in USD, not adjusted for Winters. 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 |
We scored 20 Winters 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 Winters 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 |