Licensed Insulation & Acoustical (C-2) contractors in Ontario, CA

The California Contractors State License Board (CSLB) lists 2 Insulation & Acoustical (C-2) contractors in Ontario, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of August 11, 2026.

2 contractors

1. Air Control Systems INC

   Ontario, CA · CSLB #639003 · as of August 11, 2026
   Active · clear
2. Pro Insulation INC

   Ontario, CA · CSLB #898228 · as of August 11, 2026
   Active · clear

See all Insulation & Acoustical (C-2) contractors in California →

Data sourced from the California Contractors State License Board (CSLB), current as of August 11, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.