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

The California Contractors State License Board (CSLB) lists 42 Heating & Air Conditioning (C-20) contractors in Livermore, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 6, 2026.

42 contractors

1. Air Concepts INC

   Livermore, CA · CSLB #839627 · as of October 6, 2026
   Active · clear
2. Air Solutions LLC

   Livermore, CA · CSLB #1161492 · as of October 6, 2026
   Active · clear
3. Airteks.com INC

   Livermore, CA · CSLB #930172 · as of October 6, 2026
   Active · clear
4. Alpine Mechanical Service Company INC

   Livermore, CA · CSLB #553780 · as of October 6, 2026
   Active · clear
5. Ambient Heating And Air

   Livermore, CA · CSLB #837170 · as of October 6, 2026
   Active · clear
6. Awesome Heating And Air Conditioning INC

   Livermore, CA · CSLB #813172 · as of October 6, 2026
   Active · clear
7. Bay Valley Heating And Air Conditioning

   Livermore, CA · CSLB #838243 · as of October 6, 2026
   Active · clear
8. Bradford Air & Heating

   Livermore, CA · CSLB #839474 · as of October 6, 2026
   Active · clear
9. Ca Heating And Air Conditioning

   Livermore, CA · CSLB #1099080 · as of October 6, 2026
   Active · clear
10. Central Heating & Air Conditioning

    Livermore, CA · CSLB #825661 · as of October 6, 2026
    Active · clear
11. Cohen Air Conditioning & Heating

    Livermore, CA · CSLB #1105472 · as of October 6, 2026
    Active · clear
12. Daniel Mechanical Services

    Livermore, CA · CSLB #984060 · as of October 6, 2026
    Active · clear
13. Delcon Heating And Air Conditioning

    Livermore, CA · CSLB #493271 · as of October 6, 2026
    Active · clear
14. Eagle Air

    Livermore, CA · CSLB #668002 · as of October 6, 2026
    Active · clear
15. East Bay Heating & Air

    Livermore, CA · CSLB #1015658 · as of October 6, 2026
    Active · clear
16. HVAC Service Star INC

    Livermore, CA · CSLB #1143099 · as of October 6, 2026
    Active · clear
17. Iron Horse Heating And Cooling

    Livermore, CA · CSLB #1083103 · as of October 6, 2026
    Active · clear
18. Kell Mechanical Heating And Air Conditioning INC

    Livermore, CA · CSLB #993569 · as of October 6, 2026
    Active · clear
19. Key Mechanical Company

    Livermore, CA · CSLB #813609 · as of October 6, 2026
    Active · clear
20. Killen Mechanical INC

    Livermore, CA · CSLB #1034453 · as of October 6, 2026
    Active · clear
21. Left Coast Heating And Air Conditioning

    Livermore, CA · CSLB #1040611 · as of October 6, 2026
    Active · clear
22. Livermore Mechanical INC

    Livermore, CA · CSLB #986999 · as of October 6, 2026
    Active · clear
23. M&a Mechanical Service LLC

    Livermore, CA · CSLB #1141566 · as of October 6, 2026
    Active · clear
24. Matafied Mechanical

    Livermore, CA · CSLB #986098 · as of October 6, 2026
    Active · clear
25. Melgar & Associates Mechanical INC

    Livermore, CA · CSLB #1140422 · as of October 6, 2026
    Active · clear
26. Ok Heating And Air Conditioning INC

    Livermore, CA · CSLB #332447 · as of October 6, 2026
    Active · clear
27. Omni Mechanical Solutions

    Livermore, CA · CSLB #1028951 · as of October 6, 2026
    Active · clear
28. RH Mechanical LLC

    Livermore, CA · CSLB #1155766 · as of October 6, 2026
    Active · clear
29. Richard's Heating & Air Repair INC

    Livermore, CA · CSLB #883458 · as of October 6, 2026
    Active · clear
30. Robert James Cortez

    Livermore, CA · CSLB #606942 · as of October 6, 2026
    Active · clear
31. Select Mechanical INC

    Livermore, CA · CSLB #928189 · as of October 6, 2026
    Active · clear
32. Service Experts Heating & Air Conditioning

    Livermore, CA · CSLB #1074641 · as of October 6, 2026
    Active · clear
33. Signal Heating & Air Conditioning

    Livermore, CA · CSLB #638992 · as of October 6, 2026
    Active · clear
34. National Energy Services INC DBA Sound HVAC Solutions

    Livermore, CA · CSLB #1092266 · as of October 6, 2026
    Active · clear
35. South Bay Mechanical

    Livermore, CA · CSLB #627316 · as of October 6, 2026
    Active · clear
36. Swift Heating & Air

    Livermore, CA · CSLB #838919 · as of October 6, 2026
    Active · clear
37. T 3 Mechanical INC

    Livermore, CA · CSLB #1038631 · as of October 6, 2026
    Active · clear
38. TD Mechanical

    Livermore, CA · CSLB #1161337 · as of October 6, 2026
    Active · clear
39. Vargas HVAC

    Livermore, CA · CSLB #1145667 · as of October 6, 2026
    Active · clear
40. Vargas Mechanical Services INC

    Livermore, CA · CSLB #1077486 · as of October 6, 2026
    Active · clear
41. Gress Heating & Air INC

    Livermore, CA · CSLB #789682 · as of October 6, 2026
    Suspended · bond
42. Helfrich Refrigeration & Mechanical Services LLC

    Livermore, CA · CSLB #1047255 · as of October 6, 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 October 6, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.