6 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Jerseyville: Air Comfort Service, Inc., CR Score 56/100; 4.9★ from 2,041 Google reviews; open 24/7.
Most-reviewed: Koala Insulation of Gateway West & Metro East IL, 528 Google reviews at 4.9★, the most of 6 ranked after Air Comfort Service, Inc.; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
6 Jerseyville insulation contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 3 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.9★ across 6 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Air Comfort Service, Inc. | 56 | 4.9★ (2,041) | Hazelwood, 25 mi away | 24/7 | Overall |
| 2 | Koala Insulation of Gateway West & Metro East IL | 55 | 4.9★ (528) | Bridgeton, 25 mi away | — | Most reviews |
| 3 | Mid States Spray Foam | 54 | 5.0★ (10) | Godfrey, 15 mi away | Sat · Sun · Evenings | — |
| 4 | Central Mechanical Insulation | 51 | 4.1★ (8) | East Alton, 19 mi away | — | — |
| 5 | Janssen Heating Cooling Plumbing & Insulation | 50 | 5.0★ (52) | East Alton, 22 mi away | Sat | — |
| 6 | Aladdin Insulation of Missouri | 49 | 4.7★ (14) | Saint Charles, 22 mi away | — | — |
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: 4.9★ from 2,041 Google reviews, the most in Jerseyville.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Bridgeton, 25 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 528 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Godfrey, 15 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Alton, 19 mi away
Ranked #4 because of its Google rating and trade focus: 4.1★ from 8 Google reviews, listed on Google as “Insulation contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in East Alton, 22 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 52 Google reviews, listed on Google as “HVAC contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Saint Charles, 22 mi away
Ranked #6 because of its Google rating and trade focus: 4.7★ from 14 Google reviews, listed on Google as “Insulation contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Jerseyville. 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 6 Jerseyville 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 Jerseyville 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 |