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

The California Contractors State License Board (CSLB) lists 38 Heating & Air Conditioning (C-20) contractors in Livermore, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of June 27, 2026.

38 contractors

1. Air Concepts INC

   Livermore, CA · CSLB #839627 · as of June 27, 2026
   Active · clear
2. Airteks.com INC

   Livermore, CA · CSLB #930172 · as of June 27, 2026
   Active · clear
3. Alpine Mechanical Service Company INC

   Livermore, CA · CSLB #553780 · as of June 27, 2026
   Active · clear
4. Ambient Heating And Air

   Livermore, CA · CSLB #837170 · as of June 27, 2026
   Active · clear
5. Awesome Heating And Air Conditioning INC

   Livermore, CA · CSLB #813172 · as of June 27, 2026
   Active · clear
6. Ca Heating And Air Conditioning

   Livermore, CA · CSLB #1099080 · as of June 27, 2026
   Active · clear
7. Central Heating & Air Conditioning

   Livermore, CA · CSLB #825661 · as of June 27, 2026
   Active · clear
8. Cohen Air Conditioning & Heating

   Livermore, CA · CSLB #1105472 · as of June 27, 2026
   Active · clear
9. Daniel Mechanical Services

   Livermore, CA · CSLB #984060 · as of June 27, 2026
   Active · clear
10. Delcon Heating And Air Conditioning

    Livermore, CA · CSLB #493271 · as of June 27, 2026
    Active · clear
11. Eagle Air

    Livermore, CA · CSLB #668002 · as of June 27, 2026
    Active · clear
12. East Bay Heating & Air

    Livermore, CA · CSLB #1015658 · as of June 27, 2026
    Active · clear
13. Gress Heating & Air INC

    Livermore, CA · CSLB #789682 · as of June 27, 2026
    Active · clear
14. HVAC Service Star INC

    Livermore, CA · CSLB #1143099 · as of June 27, 2026
    Active · clear
15. Iron Horse Heating And Cooling

    Livermore, CA · CSLB #1083103 · as of June 27, 2026
    Active · clear
16. Kell Mechanical Heating And Air Conditioning INC

    Livermore, CA · CSLB #993569 · as of June 27, 2026
    Active · clear
17. Key Mechanical Company

    Livermore, CA · CSLB #813609 · as of June 27, 2026
    Active · clear
18. Killen Mechanical INC

    Livermore, CA · CSLB #1034453 · as of June 27, 2026
    Active · clear
19. Left Coast Heating And Air Conditioning

    Livermore, CA · CSLB #1040611 · as of June 27, 2026
    Active · clear
20. Livermore Mechanical INC

    Livermore, CA · CSLB #986999 · as of June 27, 2026
    Active · clear
21. M&a Mechanical Service LLC

    Livermore, CA · CSLB #1141566 · as of June 27, 2026
    Active · clear
22. Matafied Mechanical

    Livermore, CA · CSLB #986098 · as of June 27, 2026
    Active · clear
23. Melgar & Associates Mechanical INC

    Livermore, CA · CSLB #1140422 · as of June 27, 2026
    Active · clear
24. Ok Heating And Air Conditioning INC

    Livermore, CA · CSLB #332447 · as of June 27, 2026
    Active · clear
25. Omni Mechanical Solutions

    Livermore, CA · CSLB #1028951 · as of June 27, 2026
    Active · clear
26. RH Mechanical LLC

    Livermore, CA · CSLB #1155766 · as of June 27, 2026
    Active · clear
27. Richard's Heating & Air Repair INC

    Livermore, CA · CSLB #883458 · as of June 27, 2026
    Active · clear
28. Robert James Cortez

    Livermore, CA · CSLB #606942 · as of June 27, 2026
    Active · clear
29. Select Mechanical INC

    Livermore, CA · CSLB #928189 · as of June 27, 2026
    Active · clear
30. Service Experts Heating & Air Conditioning

    Livermore, CA · CSLB #1074641 · as of June 27, 2026
    Active · clear
31. Signal Heating & Air Conditioning

    Livermore, CA · CSLB #638992 · as of June 27, 2026
    Active · clear
32. National Energy Services INC DBA Sound HVAC Solutions

    Livermore, CA · CSLB #1092266 · as of June 27, 2026
    Active · clear
33. South Bay Mechanical

    Livermore, CA · CSLB #627316 · as of June 27, 2026
    Active · clear
34. Swift Heating & Air

    Livermore, CA · CSLB #838919 · as of June 27, 2026
    Active · clear
35. T 3 Mechanical INC

    Livermore, CA · CSLB #1038631 · as of June 27, 2026
    Active · clear
36. Vargas HVAC

    Livermore, CA · CSLB #1145667 · as of June 27, 2026
    Active · clear
37. Vargas Mechanical Services INC

    Livermore, CA · CSLB #1077486 · as of June 27, 2026
    Active · clear
38. Helfrich Refrigeration & Mechanical Services LLC

    Livermore, CA · CSLB #1047255 · as of June 27, 2026
    Suspended

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.