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

The California Contractors State License Board (CSLB) lists 8,999 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 June 30, 2026.

Showing 3,961–4,020 of 8,999 contractors

1. Federico Guerrero

   Long Beach, CA · CSLB #1019911 · as of June 30, 2026
   Active · clear
2. Oscar Guerrero

   Tustin, CA · CSLB #875215 · as of June 30, 2026
   Active · clear
3. Guerrero's Heating & Air Conditioning

   Stockton, CA · CSLB #1062959 · as of June 30, 2026
   Active · clear
4. Guido's Service

   Vallejo, CA · CSLB #892930 · as of June 30, 2026
   Active · clear
5. Gundlach's

   Bakersfield, CA · CSLB #1095655 · as of June 30, 2026
   Active · clear
6. Gunnys Heating And Air

   Perris, CA · CSLB #1082645 · as of June 30, 2026
   Active · clear
7. David Gutierrez

   Gardnerville, CA · CSLB #741991 · as of June 30, 2026
   Active · clear
8. Gabriel Gutierrez Iii

   Palmdale, CA · CSLB #1117695 · as of June 30, 2026
   Active · clear
9. Gutierrez Heating & Air

   Encino, CA · CSLB #554246 · as of June 30, 2026
   Active · clear
10. Gutzke Mechanical

    Placerville, CA · CSLB #788334 · as of June 30, 2026
    Active · clear
11. Guy Plumbing & Heating INC

    Menlo Park, CA · CSLB #330785 · as of June 30, 2026
    Active · clear
12. Guy's Heating Air Conditioning And Sheetmetal

    Gilroy, CA · CSLB #654963 · as of June 30, 2026
    Active · clear
13. Guy's Heating & Air Conditioning INC

    West Covina, CA · CSLB #1003750 · as of June 30, 2026
    Active · clear
14. GV Air Mechanical

    Salinas, CA · CSLB #1127325 · as of June 30, 2026
    Active · clear
15. GVK Heating And Air INC

    Poway, CA · CSLB #911659 · as of June 30, 2026
    Active · clear
16. G W Heating & Air Conditioning

    West Covina, CA · CSLB #1103035 · as of June 30, 2026
    Active · clear
17. G W Richardson Heating & Air Conditioning INC

    Valencia, CA · CSLB #496735 · as of June 30, 2026
    Active · clear
18. G Z M Cooling

    Calexico, CA · CSLB #1036916 · as of June 30, 2026
    Active · clear
19. H2 Heating And Air INC

    Escalon, CA · CSLB #1058369 · as of June 30, 2026
    Active · clear
20. H 2 H Heating And Air Conditioning

    Laguna Niguel, CA · CSLB #1002858 · as of June 30, 2026
    Active · clear
21. H4 Cooling

    Torrance, CA · CSLB #1096443 · as of June 30, 2026
    Active · clear
22. Hac Control

    Oakley, CA · CSLB #1140726 · as of June 30, 2026
    Active · clear
23. H A C E U S A

    Bonsall, CA · CSLB #724117 · as of June 30, 2026
    Active · clear
24. Hac Heating & Air Conditioning INC

    Winton, CA · CSLB #941040 · as of June 30, 2026
    Active · clear
25. Hacienda Heating & A/c

    Apple Valley, CA · CSLB #907202 · as of June 30, 2026
    Active · clear
26. Hackney INC

    Santa Monica, CA · CSLB #958504 · as of June 30, 2026
    Active · clear
27. John M Hagan

    Lakeport, CA · CSLB #541548 · as of June 30, 2026
    Active · clear
28. Hagen Heating & Air

    Rancho Cucamonga, CA · CSLB #746913 · as of June 30, 2026
    Active · clear
29. Hratch Hagopian

    La Crescenta, CA · CSLB #1082986 · as of June 30, 2026
    Active · clear
30. H & A Heating And Air INC

    Oceanside, CA · CSLB #908034 · as of June 30, 2026
    Active · clear
31. Hahn Mechanical

    San Jose, CA · CSLB #1128875 · as of June 30, 2026
    Active · clear
32. Hai Bin Yan

    Monterey Park, CA · CSLB #1145558 · as of June 30, 2026
    Active · clear
33. Haight & Haight INC

    Fallbrook, CA · CSLB #351411 · as of June 30, 2026
    Active · clear
34. Haines Heating & Air Conditioning

    Rancho Santa Margarita, CA · CSLB #1094475 · as of June 30, 2026
    Active · clear
35. Hagop J Hairabdian

    Sylmar, CA · CSLB #1087957 · as of June 30, 2026
    Active · clear
36. D R Stuart INC DBA Hale Refrigeration

    Canyon Country, CA · CSLB #673532 · as of June 30, 2026
    Active · clear
37. Joseph Hall Heating And Air Conditioning

    La Crescenta, CA · CSLB #1040102 · as of June 30, 2026
    Active · clear
38. Robert Hall & Sons

    La Crescenta, CA · CSLB #602029 · as of June 30, 2026
    Active · clear
39. Hall's Heating And Air

    Goleta, CA · CSLB #932558 · as of June 30, 2026
    Active · clear
40. Hall's Heating And Air Conditioning

    Redding, CA · CSLB #968816 · as of June 30, 2026
    Active · clear
41. Halo Heating & Air Conditioning

    Bradley, CA · CSLB #860338 · as of June 30, 2026
    Active · clear
42. Hammer Heating & Air

    Upland, CA · CSLB #1119562 · as of June 30, 2026
    Active · clear
43. Hammer Heating & Air Conditioning INC

    Redondo Beach, CA · CSLB #1044174 · as of June 30, 2026
    Active · clear
44. Hammer Mechanical INC

    Vista, CA · CSLB #810016 · as of June 30, 2026
    Active · clear
45. Hammer's Heating And Air Conditioning

    Martinez, CA · CSLB #672344 · as of June 30, 2026
    Active · clear
46. Josef Hamudot

    Los Angeles, CA · CSLB #996756 · as of June 30, 2026
    Active · clear
47. Hancock Air Conditioning And Heating

    Tulare, CA · CSLB #586163 · as of June 30, 2026
    Active · clear
48. Hugh Hoard INC DBA H And H Air Conditioning

    Palm Desert, CA · CSLB #510566 · as of June 30, 2026
    Active · clear
49. George Haney & Son INC

    Pasadena, CA · CSLB #329449 · as of June 30, 2026
    Active · clear
50. Hanford Air Conditioning

    Hanford, CA · CSLB #1085462 · as of June 30, 2026
    Active · clear
51. Hangtown Mechanical

    Placerville, CA · CSLB #1127860 · as of June 30, 2026
    Active · clear
52. Hangyman INC

    Santa Clarita, CA · CSLB #1153532 · as of June 30, 2026
    Active · clear
53. Hanifan Heating & Air Conditioning

    Culver City, CA · CSLB #1140124 · as of June 30, 2026
    Active · clear
54. Moonho Han

    Alhambra, CA · CSLB #1139556 · as of June 30, 2026
    Active · clear
55. Jay Scott Hansen

    Westlake Village, CA · CSLB #1065673 · as of June 30, 2026
    Active · clear
56. Hanson Air Conditioning & Heating

    Tarzana, CA · CSLB #512068 · as of June 30, 2026
    Active · clear
57. Hanson's Heating & A/c INC

    Santee, CA · CSLB #621587 · as of June 30, 2026
    Active · clear
58. Julan Hao

    Ontario, CA · CSLB #1083815 · as of June 30, 2026
    Active · clear
59. Happy Camper Heating Air And Plumbing

    Whittier, CA · CSLB #1104410 · as of June 30, 2026
    Active · clear
60. Happy Heating & Air

    Hayward, CA · CSLB #1121646 · as of June 30, 2026
    Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of June 30, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.