9 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Ione: California Energy Services, CR Score 56/100; 4.3★ from 56 Google reviews; open 24/7.
Most-reviewed: Good Guys Heating & Cooling, 929 Google reviews at 4.9★, the most of 9 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
9 Ione insulation contractors are ranked here by CR Score, from ten published factors. 1 is open 24/7, 6 open Saturdays and 3 open Sundays, based on posted hours. The median Google rating is 4.9★ across 9 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | California Energy Services | 56 | 4.3★ (56) | El Dorado Hills, 21 mi away | 24/7 | Overall |
| 2 | EcoGuard Pest Management | 54 | 4.9★ (581) | El Dorado Hills, 20 mi away | Sat · Sun · Evenings | — |
| 3 | Good Guys Heating & Cooling | 53 | 4.9★ (929) | Cameron Park, 21 mi away | Sat | Most reviews |
| 4 | Efficiency Insulation Elk Grove | 53 | 4.9★ (30) | Elk Grove, 25 mi away | Sat · Evenings | — |
| 5 | Ace Handyman Services El Dorado Hills | 50 | 4.9★ (329) | Cameron Park, 21 mi away | — | — |
| 6 | 5 Star Performance Insulation, Inc. | 49 | 4.3★ (24) | Arden-Arcade, 23 mi away | — | — |
| 7 | Insulation Specialist Inc | 48 | 5.0★ (3) | Auburn, 21 mi away | — | — |
| 8 | Ironstone Roofing | 48 | 5.0★ (23) | Rancho Cordova, 25 mi away | Sat · Sun | — |
| 9 | Infinite Energy Home Services | 44 | 3.9★ (28) | Rancho Cordova, 25 mi away | Sat | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.3★ from 56 Google reviews, listed on Google as “Insulation contractor”.
Based in El Dorado Hills, 20 mi away
Ranked #2 because of its Google rating and review volume: 4.9★ from 581 Google reviews.
Based in Cameron Park, 21 mi away
Ranked #3 because of its Google rating and review volume: 4.9★ from 929 Google reviews, the most in Ione.
Based in Elk Grove, 25 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 30 Google reviews, listed on Google as “Insulation contractor”.
Based in Cameron Park, 21 mi away
Ranked #5 because of its Google rating and review volume: 4.9★ from 329 Google reviews.
Based in Arden-Arcade, 23 mi away
Ranked #6 because of its Google rating and trade focus: 4.3★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based in Auburn, 21 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Insulation contractor”.
Based in Rancho Cordova, 25 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Roofing contractor”.
Based in Rancho Cordova, 25 mi away
Ranked #9 because of its Google rating and trade focus: 3.9★ from 28 Google reviews, listed on Google as “Solar energy system service”.
National price ranges in USD, not adjusted for Ione. 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 9 Ione 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 Ione 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 |