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

The California Contractors State License Board (CSLB) lists 31 Heating & Air Conditioning (C-20) contractors in Oakland, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 7, 2026.

31 contractors

1. All Seasons Heating & Air Conditioning

   Oakland, CA · CSLB #587252 · as of October 7, 2026
   Active · clear
2. International Energy Resources LLC DBA Ambient Experts HVAC

   Oakland, CA · CSLB #1049324 · as of October 7, 2026
   Active · clear
3. Your Warm Friend INC DBA Atlas Heating & Air-conditioning CO

   Oakland, CA · CSLB #489501 · as of October 7, 2026
   Active · clear
4. Breathable

   Oakland, CA · CSLB #979977 · as of October 7, 2026
   Active · clear
5. BV Mechanical Services LLC

   Oakland, CA · CSLB #1134400 · as of October 7, 2026
   Active · clear
6. California HVAC

   Oakland, CA · CSLB #1085458 · as of October 7, 2026
   Active · clear
7. Care Heating & Air Conditioning INC

   Oakland, CA · CSLB #1023652 · as of October 7, 2026
   Active · clear
8. Carter's Heating & Air

   Oakland, CA · CSLB #1013227 · as of October 7, 2026
   Active · clear
9. Chief's Refrigeration Air

   Oakland, CA · CSLB #447976 · as of October 7, 2026
   Active · clear
10. Harry Clark Plumbing And Heating INC

    Oakland, CA · CSLB #792463 · as of October 7, 2026
    Active · clear
11. Daniel's Heating & A/c

    Oakland, CA · CSLB #1059101 · as of October 7, 2026
    Active · clear
12. D P Heating & Air Conditioning

    Oakland, CA · CSLB #636826 · as of October 7, 2026
    Active · clear
13. Ease H V A C

    Oakland, CA · CSLB #990471 · as of October 7, 2026
    Active · clear
14. Eco Energy Bay Area

    Oakland, CA · CSLB #1025592 · as of October 7, 2026
    Active · clear
15. Elden Plumbing INC

    Oakland, CA · CSLB #1015348 · as of October 7, 2026
    Active · clear
16. Energreen Mechanical

    Oakland, CA · CSLB #1017148 · as of October 7, 2026
    Active · clear
17. Harry Clark Heating & Air Conditioning INC

    Oakland, CA · CSLB #1056105 · as of October 7, 2026
    Active · clear
18. Heavenly Heating & Air INC

    Oakland, CA · CSLB #1146424 · as of October 7, 2026
    Active · clear
19. Lias Mechanical INC

    Oakland, CA · CSLB #817456 · as of October 7, 2026
    Active · clear
20. Yen Lin Li Company INC

    Oakland, CA · CSLB #530114 · as of October 7, 2026
    Active · clear
21. Mihas HVAC INC

    Oakland, CA · CSLB #1149214 · as of October 7, 2026
    Active · clear
22. Modern Heating And Air Conditioning

    Oakland, CA · CSLB #685104 · as of October 7, 2026
    Active · clear
23. Nestly Heating And Cooling

    Oakland, CA · CSLB #1158214 · as of October 7, 2026
    Active · clear
24. Olympic Heating And Air

    Oakland, CA · CSLB #918993 · as of October 7, 2026
    Active · clear
25. Red Fox Heating & Cooling

    Oakland, CA · CSLB #1095334 · as of October 7, 2026
    Active · clear
26. R Powell Mechanical

    Oakland, CA · CSLB #1139432 · as of October 7, 2026
    Active · clear
27. Seaside Refrigeration

    Oakland, CA · CSLB #981257 · as of October 7, 2026
    Active · clear
28. Supreme Climate Control

    Oakland, CA · CSLB #842936 · as of October 7, 2026
    Active · clear
29. Tom's Refrigeration HVAC INC

    Oakland, CA · CSLB #1109609 · as of October 7, 2026
    Active · clear
30. Velasco's Heating And Air Conditioning

    Oakland, CA · CSLB #1091060 · as of October 7, 2026
    Active · clear
31. J&K Sheetmetal CO

    Oakland, CA · CSLB #1141718 · as of October 7, 2026
    Suspended · workers' comp

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Data sourced from the California Contractors State License Board (CSLB), current as of October 7, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.