73 insulation contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in San Diego: Attic Projects Company, CR Score 90/100; 4.9★ from 888 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): Miramar SD Insulation Inc., posts 24/7 hours; ranked #3 of 73.
Most-reviewed: Mauzy Cooling, Heating, Plumbing, and Electrical, 4,710 Google reviews at 4.8★, the most of 73 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
73 San Diego insulation contractors are ranked here by CR Score, from 8 published factors. 6 are open 24/7, 44 open Saturdays and 36 open Sundays, based on posted hours. The median Google rating is 4.9★ across 73 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Attic Projects Company | 90 | 4.9★ (888) | San Diego | Sat · Sun | Overall |
| 2 | Attic Construction | 89 | 4.9★ (316) | San Diego | Sat · Sun · Evenings | — |
| 3 | Miramar SD Insulation Inc. | 89 | 5.0★ (31) | San Diego | 24/7 | Emergencies |
| 4 | Attic Professional | 88 | 5.0★ (197) | Santee, 14 mi away | 24/7 | — |
| 5 | Advanced Insulation System | 88 | 5.0★ (126) | San Diego | Sat · Sun | — |
| 6 | California Attic & Build | 88 | 5.0★ (144) | San Diego | Sat · Sun | — |
| 7 | Attic Heroes | 88 | 5.0★ (106) | San Diego | Sat · Sun · Evenings | — |
| 8 | Precision Environmental | 87 | 4.5★ (31) | San Diego | 24/7 | — |
| 9 | Green Faith Attic Solutions | 86 | 5.0★ (40) | San Diego | Sat · Sun · Evenings | — |
| 10 | Mauzy Cooling, Heating, Plumbing, and Electrical | 85 | 4.8★ (4,710) | El Cajon, 14 mi away | 24/7 | Most reviews |
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.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 888 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #2 because of its Google rating and trade focus: 4.9★ from 316 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #3 because of its Google rating and availability: 5.0★ from 31 Google reviews, open 24/7.
Based in Santee, 14 mi away
Ranked #4 because of its Google rating and availability: 5.0★ from 197 Google reviews, open 24/7.
Based in San Diego
Ranked #5 because of its Google rating and trade focus: 5.0★ from 126 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #6 because of its Google rating and trade focus: 5.0★ from 144 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #7 because of its Google rating and trade focus: 5.0★ from 106 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #8 because of its Google rating and availability: 4.5★ from 31 Google reviews, open 24/7.
Based in San Diego
Ranked #9 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Insulation contractor”.
Based in El Cajon, 14 mi away
Ranked #10 because of its Google rating and review volume: 4.8★ from 4,710 Google reviews, the most Google reviews on this list (4,710).
Based in San Diego
Ranked #11 because of its Google rating and availability: 3.7★ from 6 Google reviews, open 24/7.
Based in Coronado, 23 mi away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 538 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #13 because of its Google rating and availability: 5.0★ from 71 Google reviews, open 24/7.
Based in San Diego
Ranked #14 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #15 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #16 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #17 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #18 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #19 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #20 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #21 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #22 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Insulation contractor”.
Based in Carlsbad, 14 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 235 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #24 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Insulation contractor”.
Based in San Diego
Ranked #25 because of its Google rating and trade focus: 5.0★ from 4 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 73 ranked insulation contractors here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Integrity Spray Foam San Diego | 82 | 5.0★ (30) | In San Diego |
| 27 | A Affordable Insulators & Services | 81 | 4.7★ (31) | 7 mi |
| 28 | Pivotal Insulation La Mesa Inc. | 80 | 5.0★ (32) | 8 mi |
| 29 | Smart Budget Insulation of Chula Vista | 80 | 5.0★ (5) | 9 mi |
| 30 | Empire Insulation | 80 | 3.0★ (8) | In San Diego |
| 31 | Ferguson Plumbing Supply | 79 | 4.2★ (116) | In San Diego |
| 32 | Next Level Insulation of Chula Vista | 79 | 5.0★ (5) | 12 mi |
| 33 | California Attic & Build | 78 | 5.0★ (5) | 13 mi |
| 34 | Select Home Improvements San Diego | 78 | 4.8★ (36) | In San Diego |
| 35 | Custom Insulation | 78 | 5.0★ (32) | 15 mi |
| 36 | Dudley Insulation Inc | 77 | 4.4★ (7) | 13 mi |
| 37 | Southern California Insulation | 77 | 4.0★ (3) | 5 mi |
| 38 | Bob Jenson | 77 | 4.9★ (1,349) | In San Diego |
| 39 | Attic Projects - Corporate Office | 76 | 5.0★ (11) | In San Diego |
| 40 | Jamul Pest Control | 76 | 4.9★ (83) | 12 mi |
| 41 | Pest Patrol, Inc. | 76 | 5.0★ (370) | In San Diego |
| 42 | Performance Contracting Inc | 75 | 4.4★ (19) | In San Diego |
| 43 | Superhero Heating & Air Conditioning | 75 | 4.8★ (12) | In San Diego |
| 44 | Coastal Marine Services | 75 | 4.4★ (14) | In San Diego |
| 45 | Pro Desk at The Home Depot | 75 | 4.2★ (6) | In San Diego |
| 46 | Crawl Space And Attic Pro | 75 | 5.0★ (104) | 19 mi |
| 47 | Energy Integrity | 75 | 5.0★ (12) | In San Diego |
| 48 | Catlin General Contracting | 74 | 5.0★ (3) | In San Diego |
| 49 | G&G Indoor Services | 74 | 5.0★ (130) | In San Diego |
| 50 | Pro Desk at The Home Depot | 74 | 3.0★ (4) | In San Diego |
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.
National price ranges in USD, not adjusted for San Diego. 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 73 San Diego 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 San Diego 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 |