Insulation Contractors in California: Ranked Lists by City (2026)
589 cities with a ranked listUpdated 0 paid placements in any rankingHow we rank →
We rank insulation contractors in 589 California cities, 61,601 city rankings in all. The largest lists are Downey (313), West Whittier-Los Nietos (307) and Santa Fe Springs (305).
Insulation contractors by city in California
Every California city with a ranked list of insulation contractors, largest first. Each list ranks businesses within 25 mi of the city.
Highest CR Scores among California insulation contractors
Each score is computed within its own city list, so use the city pages to compare businesses. Shown for orientation, not as a state ranking.
| # | Business | CR Score | City list | Google rating |
|---|---|---|---|---|
| 1 | QC Guys - Whole House Fan Experts | 67 | #1 in Murrieta | 5.0★ (1,843) |
| 2 | Excludetech | 66 | #1 in Bakersfield | 4.8★ (24) |
| 3 | Attic Pros | 66 | #1 in Oakland | 4.8★ (1,938) |
| 4 | CURA Termite and Pest Control | 66 | #1 in Anaheim | 4.9★ (859) |
| 5 | NexGen HVAC & Plumbing | 66 | #1 in Riverside | 4.7★ (1,769) |
| 6 | EcoGuard Pest Management | 66 | #1 in Folsom | 4.9★ (2,092) |
| 7 | HomeShield Pest Control | 66 | #1 in Los Angeles | 5.0★ (2,945) |
| 8 | EcoGuard Pest Management | 65 | #1 in San Marcos | 4.9★ (637) |
| 9 | Cal Spray Foam Insulation | 65 | #2 in Bakersfield | 5.0★ (33) |
| 10 | All City Animal Trapping | 64 | #1 in Carson | 4.9★ (732) |