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 4,921–4,980 of 8,936 contractors

1. Richard Kleckner Plumbing Heating & Air Conditioning

   Huntington Beach, CA · CSLB #922685 · as of October 8, 2026
   Active · clear
2. Kleen Air INC

   Lincoln, CA · CSLB #481974 · as of October 8, 2026
   Active · clear
3. Klimate King Heating & Air

   Placerville, CA · CSLB #1120249 · as of October 8, 2026
   Active · clear
4. Kline's Kustom Heating & Air INC

   Duarte, CA · CSLB #519892 · as of October 8, 2026
   Active · clear
5. KLM HVAC & Refrigeration

   Los Alamitos, CA · CSLB #499313 · as of October 8, 2026
   Active · clear
6. Klondike Air INC

   Costa Mesa, CA · CSLB #754456 · as of October 8, 2026
   Active · clear
7. Klyn's Heating & Cooling

   Turlock, CA · CSLB #1113467 · as of October 8, 2026
   Active · clear
8. KMC Mechanical Services

   West Covina, CA · CSLB #1160524 · as of October 8, 2026
   Active · clear
9. KMK Heating & Air

   Sebastopol, CA · CSLB #1125625 · as of October 8, 2026
   Active · clear
10. Knappert Heating And Air Conditioning LLC

    San Juan Capistrano, CA · CSLB #1122346 · as of October 8, 2026
    Active · clear
11. K N C Air Control INC

    Fullerton, CA · CSLB #790011 · as of October 8, 2026
    Active · clear
12. Knight Mechanical Services INC

    Laguna Hills, CA · CSLB #714423 · as of October 8, 2026
    Active · clear
13. Knockout Heating And Air

    Palmdale, CA · CSLB #1103631 · as of October 8, 2026
    Active · clear
14. Ko-am Refrigeration & Air - Con CO INC

    Los Angeles, CA · CSLB #635054 · as of October 8, 2026
    Active · clear
15. Koastal Komfort LLC

    Santa Maria, CA · CSLB #1138915 · as of October 8, 2026
    Active · clear
16. Koch Heating & Air Conditioning INC

    Murrieta, CA · CSLB #678513 · as of October 8, 2026
    Active · clear
17. Kodiak Heating & Cooling

    Brentwood, CA · CSLB #1106198 · as of October 8, 2026
    Active · clear
18. Kodiak Mechanical Heating & Air

    Sacramento, CA · CSLB #1159728 · as of October 8, 2026
    Active · clear
19. Kody HVAC INC

    Glendale, CA · CSLB #1115178 · as of October 8, 2026
    Active · clear
20. Kody's Heating And Air Conditioning INC

    Coronado, CA · CSLB #1160884 · as of October 8, 2026
    Active · clear
21. Greg Koehler Heating & Air

    Lodi, CA · CSLB #1004814 · as of October 8, 2026
    Active · clear
22. Koen's Air Conditioning

    Hanford, CA · CSLB #409484 · as of October 8, 2026
    Active · clear
23. Kohler Heating

    San Francisco, CA · CSLB #951781 · as of October 8, 2026
    Active · clear
24. Kenneth Kolanoski

    Costa Mesa, CA · CSLB #611339 · as of October 8, 2026
    Active · clear
25. K O L HVAC Repairs

    San Diego, CA · CSLB #1031255 · as of October 8, 2026
    Active · clear
26. Komfort Kuest Air Conditioning & Heating

    El Segundo, CA · CSLB #993501 · as of October 8, 2026
    Active · clear
27. Komfy Cozy Heating & Air

    Coyote, CA · CSLB #1072708 · as of October 8, 2026
    Active · clear
28. Kona Temp INC

    Mission Hills, CA · CSLB #925322 · as of October 8, 2026
    Active · clear
29. Konrad Heating & Air

    Auburn, CA · CSLB #607629 · as of October 8, 2026
    Active · clear
30. Kontrol System Integrator

    San Jose, CA · CSLB #864882 · as of October 8, 2026
    Active · clear
31. Kool Air

    Yuba City, CA · CSLB #708105 · as of October 8, 2026
    Active · clear
32. Kool-air INC

    Fountain Valley, CA · CSLB #1015972 · as of October 8, 2026
    Active · clear
33. Koolbreeze Heating & Air

    La Mesa, CA · CSLB #1107669 · as of October 8, 2026
    Active · clear
34. Kool Breeze HVAC

    Fresno, CA · CSLB #1020325 · as of October 8, 2026
    Active · clear
35. Kool & Comfortable INC

    Whittier, CA · CSLB #997576 · as of October 8, 2026
    Active · clear
36. Kool Dynamics Air Conditioning & Heating INC

    Oxnard, CA · CSLB #1086436 · as of October 8, 2026
    Active · clear
37. Kool Guys HVAC INC

    Sylmar, CA · CSLB #1082917 · as of October 8, 2026
    Active · clear
38. Koolman Air Conditioning & Heating

    Los Angeles, CA · CSLB #864541 · as of October 8, 2026
    Active · clear
39. Koolpak HVAC

    Brea, CA · CSLB #1049493 · as of October 8, 2026
    Active · clear
40. Koolrite HVAC INC

    Lynwood, CA · CSLB #1100028 · as of October 8, 2026
    Active · clear
41. Kosco Heating & Air Conditioning

    Carmichael, CA · CSLB #677067 · as of October 8, 2026
    Active · clear
42. Kosharek HVAC

    Paso Robles, CA · CSLB #1127231 · as of October 8, 2026
    Active · clear
43. Kostas HVAC INC

    Mountain House, CA · CSLB #1155237 · as of October 8, 2026
    Active · clear
44. Kot HVAC INC A Domestic Corporation

    Mission Viejo, CA · CSLB #1162152 · as of October 8, 2026
    Active · clear
45. Graydon Kouri Plumbing Heating Air Conditioning

    Fairfield, CA · CSLB #638681 · as of October 8, 2026
    Active · clear
46. Kramer Mechanical

    Wellington, CA · CSLB #988125 · as of October 8, 2026
    Active · clear
47. K & R Heating And Air Conditioning Service

    Concord, CA · CSLB #986374 · as of October 8, 2026
    Active · clear
48. K & R Heating And Cooling Service INC

    Concord, CA · CSLB #1148600 · as of October 8, 2026
    Active · clear
49. Krieger Mechanical

    South Lake Tahoe, CA · CSLB #974568 · as of October 8, 2026
    Active · clear
50. K - Rod Heating & Air INC

    El Cajon, CA · CSLB #964555 · as of October 8, 2026
    Active · clear
51. Krstich Heating & Air

    Orange, CA · CSLB #1002612 · as of October 8, 2026
    Active · clear
52. K & S Air Conditioning INC

    Orange, CA · CSLB #483431 · as of October 8, 2026
    Active · clear
53. K S HVAC INC

    San Jose, CA · CSLB #1003964 · as of October 8, 2026
    Active · clear
54. K & S Mechanical INC

    Vacaville, CA · CSLB #979110 · as of October 8, 2026
    Active · clear
55. K T Mechanical INC

    Santa Cruz, CA · CSLB #902030 · as of October 8, 2026
    Active · clear
56. Kunkel Heating Service INC

    Lemon Grove, CA · CSLB #606474 · as of October 8, 2026
    Active · clear
57. Kurt's Plumbing & Heating

    Brentwood, CA · CSLB #329497 · as of October 8, 2026
    Active · clear
58. Kurtzer's Heating & Air Conditioning INC

    Monument, CA · CSLB #782511 · as of October 8, 2026
    Active · clear
59. Kuya's Climate Control LLC

    El Cajon, CA · CSLB #1155355 · as of October 8, 2026
    Active · clear
60. Kuzbass Corporation

    Los Angeles, CA · CSLB #1089497 · 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.