156 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Corona: Gopher Patrol, CR Score 62/100; 4.9★ from 182 Google reviews; open 24/7.
Best for emergencies (open 24/7): NexGen HVAC & Plumbing, posts 24/7 hours; ranked #2 of 156.
Most-reviewed: RighTime Home Services, 3,741 Google reviews at 4.7★, the most of 156 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
156 Corona insulation contractors are ranked here by CR Score, from ten published factors. 26 are open 24/7, 120 open Saturdays and 102 open Sundays, based on posted hours. The median Google rating is 5.0★ across 156 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Gopher Patrol | 62 | 4.9★ (182) | Riverside, 4 mi away | 24/7 | Overall |
| 2 | NexGen HVAC & Plumbing | 62 | 4.7★ (1,769) | Riverside, 16 mi away | 24/7 | Emergencies |
| 3 | CURA Termite and Pest Control | 61 | 4.9★ (859) | Anaheim, 19 mi away | 24/7 | — |
| 4 | RighTime Home Services | 61 | 4.7★ (3,741) | Corona | 24/7 | Most reviews |
| 5 | My Insulation Guy | 60 | 4.9★ (155) | Riverside, 5 mi away | Sat · Sun · Evenings | — |
| 6 | Attic Projects | 59 | 4.9★ (584) | Orange, 18 mi away | Sat · Sun · Evenings | — |
| 7 | Ameriwest Home Services | 59 | 5.0★ (203) | Riverside, 7 mi away | Sat | — |
| 8 | CURA Termite & Pest Control Laguna Niguel | 59 | 4.9★ (324) | Laguna Niguel, 23 mi away | 24/7 | — |
| 9 | Attic Projects | 58 | 5.0★ (168) | Rancho Cucamonga, 15 mi away | Sat · Sun · Evenings | — |
| 10 | Attic Advisor | 58 | 5.0★ (37) | Riverside, 5 mi away | Sat · Sun · Evenings | — |
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: 4.9★ from 182 Google reviews, listed on Google as “Insulation contractor”.
Based in Riverside, 16 mi away
Ranked #2 because of its Google rating and trade focus: 4.7★ from 1,769 Google reviews, listed on Google as “Insulation contractor”.
Based in Anaheim, 19 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 859 Google reviews, listed on Google as “Insulation contractor”.
Based in Corona
Ranked #4 because of its Google rating and review volume: 4.7★ from 3,741 Google reviews, the most in Corona.
Based in Riverside, 5 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 155 Google reviews, listed on Google as “Insulation contractor”.
Based in Orange, 18 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 584 Google reviews, listed on Google as “Insulation contractor”.
Based in Riverside, 7 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 203 Google reviews, listed on Google as “Insulation contractor”.
Based in Laguna Niguel, 23 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 324 Google reviews, listed on Google as “Insulation contractor”.
Based in Rancho Cucamonga, 15 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 168 Google reviews, listed on Google as “Insulation contractor”.
Based in Riverside, 5 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 37 Google reviews, listed on Google as “Insulation contractor”.
Based in Corona
Ranked #11 because of its Google rating and review volume: 4.9★ from 191 Google reviews.
Based in Riverside, 5 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Insulation contractor”.
Based in Fullerton, 20 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 135 Google reviews, listed on Google as “Insulation contractor”.
Based in Irvine, 19 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 310 Google reviews, listed on Google as “Insulation contractor”.
Based in Anaheim, 13 mi away
Ranked #15 because of its Google rating and review volume: 4.7★ from 2,250 Google reviews.
Based in Laguna Hills, 20 mi away
Ranked #16 because of its Google rating and review volume: 4.8★ from 3,589 Google reviews.
Based in Corona
Ranked #17 because of its Google rating and trade focus: 4.5★ from 24 Google reviews, listed on Google as “Insulation contractor”.
Based in Anaheim, 9 mi away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Insulation contractor”.
Based in Fontana, 13 mi away
Ranked #19 because of its Google rating and review volume: 4.8★ from 708 Google reviews.
Based in Rancho Santa Margarita, 17 mi away
Ranked #20 because of its Google rating and review volume: 4.9★ from 1,005 Google reviews.
Based in Santa Ana, 20 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 79 Google reviews, listed on Google as “Insulation contractor”.
Based in Placentia, 15 mi away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Insulation contractor”.
Based in Anaheim, 13 mi away
Ranked #23 because of its Google rating and trade focus: 4.8★ from 34 Google reviews, listed on Google as “Insulation contractor”.
Based in Santa Ana, 20 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Insulation contractor”.
Based in Aliso Viejo, 23 mi away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Insulation contractor”.
#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 156 ranked insulation contractors here; the rest are on their profiles.
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.
| Business | Google rating | Distance |
|---|---|---|
| 911 Restoration of Riverside County | 4.8★ (51) | In Corona |
| Aced It Heating & AC Repair | 5.0★ (306) | In Corona |
| Airplus of California Inc. | 4.9★ (1,325) | In Corona |
| All Pro Cooling, Heating, Plumbing & Electrical | 4.7★ (4,107) | In Corona |
| Builders' Insulation | 5.0★ (2) | In Corona |
| Canyon Insulation Inc | 5.0★ (2) | In Corona |
| Corona Prestige Roofing Repair | 4.6★ (20) | In Corona |
| Corona Roofing Solutions | 5.0★ (14) | In Corona |
| EMS Restoration & Construction | 4.4★ (23) | In Corona |
| Icee Hot Air Conditioning & Heating | 5.0★ (236) | In Corona |
| Lewis Roofing Inc | 3.0★ (2) | In Corona |
| Liberty General Contractors | 5.0★ (4) | In Corona |
| Matrix HVAC | 5.0★ (32) | In Corona |
| Preferred Firestopping Inc. | 4.9★ (11) | In Corona |
| Residential Wall Systems | 3.0★ (4) | In Corona |
| SDP Home Run Contracting | 5.0★ (11) | In Corona |
| SERVPRO of Corona | 4.9★ (59) | In Corona |
| SoCal Boys Heating & Air | 5.0★ (110) | In Corona |
| Thermal Energy Products | 3.0★ (2) | In Corona |
| Total Comfort Inc | 4.8★ (463) | In Corona |
National price ranges in USD, not adjusted for Corona. 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 156 Corona 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 Corona 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 |