Licensed Heating & Air Conditioning (C-20) contractors in California

The California Contractors State License Board (CSLB) lists 8,936 California contractors classified C-20 (Heating & Air Conditioning (C-20)). Each entry below links to a full dossier with license status, insurance, bond, and enforcement — as of October 8, 2026.

Showing 5,821–5,880 of 8,936 contractors

1. Next Wave Heatin And Air

   Valley Center, CA · CSLB #1120991 · as of October 8, 2026
   Active · clear
2. Nexus Climate Control

   Bell, CA · CSLB #1144354 · as of October 8, 2026
   Active · clear
3. Nexus Heating And Air

   North Hollywood, CA · CSLB #1132330 · as of October 8, 2026
   Active · clear
4. Nguyen

   Sacramento, CA · CSLB #1013620 · as of October 8, 2026
   Active · clear
5. Cuong An Nguyen

   Garden Grove, CA · CSLB #686131 · as of October 8, 2026
   Active · clear
6. Nice And Cold Heating & Air

   Winchester, CA · CSLB #1120566 · as of October 8, 2026
   Active · clear
7. Nice And Cool INC

   Los Angeles, CA · CSLB #959276 · as of October 8, 2026
   Active · clear
8. Nice Weather H V A C

   Fair Oaks, CA · CSLB #891596 · as of October 8, 2026
   Active · clear
9. Nicholas Aire Systems

   Santa Clarita, CA · CSLB #462231 · as of October 8, 2026
   Active · clear
10. Nicholas Mechanical HVAC INC

    Anaheim, CA · CSLB #992453 · as of October 8, 2026
    Active · clear
11. Nick Air Conditioning INC

    Ontario, CA · CSLB #1135910 · as of October 8, 2026
    Active · clear
12. Nickel HVAC LLC

    Woodland Hills, CA · CSLB #1131374 · as of October 8, 2026
    Active · clear
13. Nickels HVAC

    Concord, CA · CSLB #1144848 · as of October 8, 2026
    Active · clear
14. Nick Rothman

    San Francisco, CA · CSLB #1153277 · as of October 8, 2026
    Active · clear
15. Nick's Heating And Refrigeration INC

    Quincy, CA · CSLB #973571 · as of October 8, 2026
    Active · clear
16. Psychrom INC DBA Nielsen Fire And Ice Heating And Air

    Yucca Valley, CA · CSLB #1032788 · as of October 8, 2026
    Active · clear
17. Nielson Mechanical INC

    Fairfield, CA · CSLB #725457 · as of October 8, 2026
    Active · clear
18. Nilco INC

    Calabasas, CA · CSLB #677735 · as of October 8, 2026
    Active · clear
19. Nine Islands Heating And Air

    Newman, CA · CSLB #1074412 · as of October 8, 2026
    Active · clear
20. Nino's Air

    Stockton, CA · CSLB #1130259 · as of October 8, 2026
    Active · clear
21. Nir Plumbing INC

    Riverside, CA · CSLB #757144 · as of October 8, 2026
    Active · clear
22. Nixon's Heating Air Conditioning And Plumbing INC

    So Lake Tahoe, CA · CSLB #787917 · as of October 8, 2026
    Active · clear
23. Nix Plumbing Heating And Air Conditioning

    Brea, CA · CSLB #542033 · as of October 8, 2026
    Active · clear
24. N J Air Conditining & Heating CO

    Northridge, CA · CSLB #763540 · as of October 8, 2026
    Active · clear
25. N K Heating & Air Conditioning INC

    Antioch, CA · CSLB #786063 · as of October 8, 2026
    Active · clear
26. N M Mechanical

    Sacramento, CA · CSLB #774780 · as of October 8, 2026
    Active · clear
27. NMR HVAC

    Cupertino, CA · CSLB #1155425 · as of October 8, 2026
    Active · clear
28. Noble Air INC

    Moorpark, CA · CSLB #978004 · as of October 8, 2026
    Active · clear
29. Noble Mechanical INC

    Shadow Hills, CA · CSLB #1112416 · as of October 8, 2026
    Active · clear
30. Noek Heating And Air INC

    Sunnyvale, CA · CSLB #1015931 · as of October 8, 2026
    Active · clear
31. No Heating & Air

    San Bernardino, CA · CSLB #1118548 · as of October 8, 2026
    Active · clear
32. No Limit Heating & Air Conditioning

    San Francisco, CA · CSLB #907886 · as of October 8, 2026
    Active · clear
33. Nolte Heating And Cooling

    Tuolumne, CA · CSLB #822147 · as of October 8, 2026
    Active · clear
34. Nolte Sheet Metal INC

    Fresno, CA · CSLB #438796 · as of October 8, 2026
    Active · clear
35. Nor Air INC

    Glendale, CA · CSLB #1052529 · as of October 8, 2026
    Active · clear
36. Nor-cal Air Conditioning

    Oakdale, CA · CSLB #578704 · as of October 8, 2026
    Active · clear
37. Norcal Comfort Pros LLC

    Sunnyvale, CA · CSLB #930533 · as of October 8, 2026
    Active · clear
38. Norcal Cooling & Calibrations

    Sacramento, CA · CSLB #803036 · as of October 8, 2026
    Active · clear
39. Nor - Cal Heating And Airconditioning

    San Leandro, CA · CSLB #595889 · as of October 8, 2026
    Active · clear
40. Nor Cal Heating And Cooling

    Sacramento, CA · CSLB #1083504 · as of October 8, 2026
    Active · clear
41. Norcal Heating And Cooling INC

    Campbell, CA · CSLB #932216 · as of October 8, 2026
    Active · clear
42. Norcal HVAC

    Cotati, CA · CSLB #1136848 · as of October 8, 2026
    Active · clear
43. Nor Cal Mechanical

    El Dorado Hills, CA · CSLB #825097 · as of October 8, 2026
    Active · clear
44. Norcal Mechanical

    Ceres, CA · CSLB #1010494 · as of October 8, 2026
    Active · clear
45. Nor Cool INC

    Granada Hills, CA · CSLB #1049402 · as of October 8, 2026
    Active · clear
46. Nordic Air Mechanical

    Shingle Springs, CA · CSLB #827476 · as of October 8, 2026
    Active · clear
47. Chris Nordin A/c And Heating

    Desert Hot Springs, CA · CSLB #829516 · as of October 8, 2026
    Active · clear
48. Normandy Heating & Air INC

    Stockton, CA · CSLB #396346 · as of October 8, 2026
    Active · clear
49. Randell D Norman

    Benicia, CA · CSLB #687446 · as of October 8, 2026
    Active · clear
50. Nor-pacific Heating And Air

    Fairfield, CA · CSLB #1128534 · as of October 8, 2026
    Active · clear
51. Norris Plumbing & Heating INC

    Tahoe City, CA · CSLB #777856 · as of October 8, 2026
    Active · clear
52. North Bay Air Systems INC

    Fairfield, CA · CSLB #325637 · as of October 8, 2026
    Active · clear
53. North Bay Comfort INC

    Rohnert Park, CA · CSLB #1096386 · as of October 8, 2026
    Active · clear
54. North Bay Commercial Services INC

    Santa Rosa, CA · CSLB #946744 · as of October 8, 2026
    Active · clear
55. North Bay Heating And Cooling

    Cromberg, CA · CSLB #973952 · as of October 8, 2026
    Active · clear
56. North Breeze INC

    Los Gatos, CA · CSLB #1127709 · as of October 8, 2026
    Active · clear
57. North County Plumbing CO

    Costa Mesa, CA · CSLB #595156 · as of October 8, 2026
    Active · clear
58. North County Refrigeration

    Escondido, CA · CSLB #1147010 · as of October 8, 2026
    Active · clear
59. North End Plumbing Heating & Air

    Santa Rosa, CA · CSLB #1107932 · as of October 8, 2026
    Active · clear
60. Northern Aire INC

    Reno, CA · CSLB #1027552 · as of October 8, 2026
    Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of October 8, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.