Licensed Heating & Air Conditioning (C-20) contractors in Danville, CA

The California Contractors State License Board (CSLB) lists 11 Heating & Air Conditioning (C-20) contractors in Danville, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of June 27, 2026.

11 contractors

1. Air Design Heating & Cooling

   Danville, CA · CSLB #604264 · as of June 27, 2026
   Active · clear
2. Ascent Conserve INC

   Danville, CA · CSLB #1147057 · as of June 27, 2026
   Active · clear
3. Ascent INC

   Danville, CA · CSLB #1069809 · as of June 27, 2026
   Active · clear
4. California Air INC

   Danville, CA · CSLB #300798 · as of June 27, 2026
   Active · clear
5. Dj's Mechanical Service CO

   Danville, CA · CSLB #1099118 · as of June 27, 2026
   Active · clear
6. HVAC Energy Solutions

   Danville, CA · CSLB #1132058 · as of June 27, 2026
   Active · clear
7. H C Jensen Plumbing INC

   Danville, CA · CSLB #265318 · as of June 27, 2026
   Active · clear
8. M-23 Mechanical Systems

   Danville, CA · CSLB #1083192 · as of June 27, 2026
   Active · clear
9. Matheneys Plumbing & Heating

   Danville, CA · CSLB #933520 · as of June 27, 2026
   Active · clear
10. Qualtech Heating & Cooling

    Danville, CA · CSLB #905205 · as of June 27, 2026
    Active · clear
11. Angel Appliance And Repair INC

    Danville, CA · CSLB #1082795 · as of June 27, 2026
    Suspended · judgment

See all Heating & Air Conditioning (C-20) contractors in California →

Data sourced from the California Contractors State License Board (CSLB), current as of June 27, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.