89/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 197 Google reviews, open 24/7.
- 5.0★ from 197 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8733 Magnolia Ave Suite 125, Santee, CA 92071
Best Insulation Contractors in Bonita, CA (2026)
71 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Bonita: Attic Professional, CR Score 89/100; 5.0★ from 197 Google reviews; open 24/7.
- 4
Best for emergencies (open 24/7): Mauzy Cooling, Heating, Plumbing, and Electrical, posts 24/7 hours; ranked #4 of 71.
- 4
Most-reviewed: Mauzy Cooling, Heating, Plumbing, and Electrical, 4,710 Google reviews at 4.8★, the most of 71 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
71 Bonita insulation contractors are ranked here by CR Score, from 8 published factors. 6 are open 24/7, 42 open Saturdays and 34 open Sundays, based on posted hours. The median Google rating is 4.9★ across 71 rated businesses.
Top 10 insulation contractors in Bonita at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Attic Professional | 89 | 5.0★ (197) | Santee, 13 mi away | 24/7 | Overall |
| 2 | Attic Construction | 87 | 4.9★ (316) | San Diego, 7 mi away | Sat · Sun · Evenings | — |
| 3 | Attic Heroes | 86 | 5.0★ (106) | San Diego, 6 mi away | Sat · Sun · Evenings | — |
| 4 | Mauzy Cooling, Heating, Plumbing, and Electrical | 86 | 4.8★ (4,710) | El Cajon, 12 mi away | 24/7 | Emergencies, Most reviews |
| 5 | Attic Projects Company | 86 | 4.9★ (888) | San Diego, 18 mi away | Sat · Sun | — |
| 6 | Advanced Insulation System | 84 | 5.0★ (126) | San Diego, 14 mi away | Sat · Sun | — |
| 7 | Miramar SD Insulation Inc. | 84 | 5.0★ (31) | San Diego, 18 mi away | 24/7 | — |
| 8 | California Attic & Build | 83 | 5.0★ (144) | San Diego, 17 mi away | Sat · Sun | — |
| 9 | Precision Environmental | 83 | 4.5★ (31) | San Diego, 13 mi away | 24/7 | — |
| 10 | Green Faith Attic Solutions | 83 | 5.0★ (40) | San Diego, 11 mi away | Sat · Sun · Evenings | — |
The 71 best insulation contractors in Bonita, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in San Diego, 7 mi away
87/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 316 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 316 Google reviews
- Hours
- Mon–Fri 8 AM–7 PM · Sat 10 AM–4 PM · Sun 10:30 AM–4:30 PM
- Address
- 4164 Cartagena Dr, San Diego, CA 92115
#3 Attic Heroes
Based in San Diego, 6 mi away
86/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 106 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 6051 Business Center Ct, San Diego, CA 92154
Based in El Cajon, 12 mi away
86/100CR ScoreRanked #4 because of its Google rating and review volume: 4.8★ from 4,710 Google reviews, the most Google reviews on this list (4,710).
- 4.8★ from 4,710 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1456 Magnolia Ave Ste E, El Cajon, CA 92021
Based in San Diego, 18 mi away
86/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 888 Google reviews, listed on Google as “Insulation contractor”.
- 4.9★ from 888 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 7 AM–4 PM
- Address
- 7840 Dunbrook Rd, San Diego, CA 92126
Based in San Diego, 14 mi away
84/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 126 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 126 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
- Address
- 5044 Ruffner St, San Diego, CA 92111
Based in San Diego, 18 mi away
84/100CR ScoreRanked #7 because of its Google rating and availability: 5.0★ from 31 Google reviews, open 24/7.
- 5.0★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7950 Silverton Ave Ste 110, San Diego, CA 92126
Based in San Diego, 17 mi away
83/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 144 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 144 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun 9 AM–2 PM
- Address
- 4901 Morena Blvd, San Diego, CA 92117
Based in San Diego, 13 mi away
83/100CR ScoreRanked #9 because of its Google rating and availability: 4.5★ from 31 Google reviews, open 24/7.
- 4.5★ from 31 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9530 Chesapeake Dr Suite 502, San Diego, CA 92123
Based in San Diego, 11 mi away
83/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 40 Google reviews
- Hours
- Mon–Sun 7 AM–9 PM
- Address
- 1455 Frazee Rd Suite 500, San Diego, CA 92108
Based in San Diego, 8 mi away
82/100CR ScoreRanked #11 because of its Google rating and availability: 3.7★ from 6 Google reviews, open 24/7.
- 3.7★ from 6 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4747 Atlanta Dr, San Diego, CA 92115
Based in Baldwin Park, 2 mi away
82/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.7★ from 31 Google reviews, listed on Google as “Insulation contractor”.
- 4.7★ from 31 Google reviews
- Hours
- Mon–Sun 8 AM–10 PM
- Address
- 1848 Puente Ave, Baldwin Park, CA 91706
Based in Chula Vista, 4 mi away
81/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 5 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 750 Design Ct, Chula Vista, CA 91911
Based in San Diego, 7 mi away
81/100CR ScoreRanked #14 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–Sun 7 AM–7 PM
- Address
- 6940 Camino Maquiladora, San Diego, CA 92154
Based in Chula Vista, 5 mi away
81/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 5 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 775 Anita St, Chula Vista, CA 91911
Based in San Diego, 7 mi away
81/100CR 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–Sun 7 AM–7 PM
- Address
- 1320 Air Wing Rd, San Diego, CA 92154
Based in San Diego, 6 mi away
81/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 5 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 1225 Exposition Way, San Diego, CA 92154
Based in Carlsbad, 19 mi away
81/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 235 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 235 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
Based in San Diego, 8 mi away
80/100CR ScoreRanked #19 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 7 AM–7 PM
- Address
- 7880 Airway Rd, San Diego, CA 92154
Based in San Diego, 9 mi away
80/100CR ScoreRanked #20 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 7 AM–8 PM
- Address
- 3930 Oregon St # 200, San Diego, CA 92104
Based in La Mesa, 8 mi away
80/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 32 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
- Address
- 4905 73rd St Suite 32, La Mesa, CA 91942
Based in San Diego, 9 mi away
80/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 5 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 10140 Marconi Dr, San Diego, CA 92154
Based in San Diego, 8 mi away
80/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Insulation contractor”.
- 5.0★ from 30 Google reviews
- Hours
- Mon–Sat 7 AM–7 PM · Sun closed
- Address
- 900 F St Suite #423, San Diego, CA 92101
Based in San Diego, 10 mi away
79/100CR 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
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun 9 AM–2 PM
- Address
- 3636 Fourth Ave Suite 200, San Diego, CA 92103
#25 Alma Roofing
Based in San Diego, 16 mi away
79/100CR ScoreRanked #25 because of its Google rating and availability: 5.0★ from 71 Google reviews, open 24/7.
- 5.0★ from 71 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4538 Cass St, San Diego, CA 92109
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 71 ranked insulation contractors here; the rest are on their profiles.
Also serving Bonita
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 |
|---|---|---|
| A&O Insulation Inc | 5.0★ (2) | In Bonita |
| Aerial Construction | 3.0★ (4) | In Bonita |
| Attic Seal Insulation | 5.0★ (1) | 19 mi |
| C.R. Insulation | 4.0★ (2) | 17 mi |
| Comfort Barrier Insulation | 5.0★ (2) | 19 mi |
| Distribution International | 5.0★ (1) | 6 mi |
| Dobbs Roofing Co. | 4.9★ (29) | In Bonita |
| Insul Tech Innovations | 5.0★ (1) | 19 mi |
| JG Construction Services | 3.8★ (10) | In Bonita |
| John General Contractor ADU | 5.0★ (26) | In Bonita |
| Junior the Rater LLC | 5.0★ (11) | In Bonita |
| NAVIGATIONAL SERVICES | 4.0★ (2) | 4 mi |
| One Hat Construction Inc | 5.0★ (9) | In Bonita |
| Plumber Chula Vista by Castillo Works | 4.9★ (170) | In Bonita |
| Pro Desk at The Home Depot | 4.0★ (2) | 13 mi |
| Qualitat Drywall, LLC | In Bonita | |
| State Supply Inc | 5.0★ (1) | 5 mi |
| Synergy Insulation | 4.0★ (2) | 17 mi |
| Total Climate Control Insulation | 5.0★ (2) | 16 mi |
| Triumph Roofing & Exteriors | 5.0★ (7) | In Bonita |
How much do insulation contractors cost in Bonita?
National price ranges in USD, not adjusted for Bonita. 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 Bonita insulation contractors
We scored 71 Bonita insulation contractors on 8 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. Unknown factors are left out of the score, 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 Bonita data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Insulation contractors in Bonita: frequently asked questions
Who is the best insulation contractor in Bonita?
By CR Score, the highest-ranked insulation contractor in Bonita, CA is Attic Professional with a CR Score of 89/100. It has 5.0★ from 197 Google reviews. It is open 24/7. Attic Construction (#2) and Attic Heroes (#3) follow. We ranked 71 insulation contractors on 8 factors, last updated October 22, 2026.
How many insulation contractors are there in Bonita?
ContractorsRanked ranks 71 insulation contractors serving Bonita, CA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which insulation contractors in Bonita are open 24/7?
6 ranked insulation contractors in Bonita post 24/7 hours. The highest-ranked are Attic Professional (#1), Mauzy Cooling, Heating, Plumbing, and Electrical (#4) and Miramar SD Insulation Inc. (#7). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which insulation contractors in Bonita work on weekends?
42 of 71 ranked insulation contractors post Saturday hours and 34 post Sunday hours. The highest-ranked open Saturdays are Attic Professional (#1), Attic Construction (#2) and Attic Heroes (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does attic insulation cost in Bonita?
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 Bonita. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Bonita insulation contractors have?
The median Google rating among 71 rated insulation contractors in Bonita is 4.9★, with a median of 14 reviews. Mauzy Cooling, Heating, Plumbing, and Electrical has the most, 4,710 reviews, and ranks #4. 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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do insulation contractors outside Bonita count in this ranking?
Yes, if they are within 25 mi of the Bonita 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 Bonita
- October 2026: CR Scores recalculated for 71 insulation contractors serving Bonita.
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