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

The California Contractors State License Board (CSLB) lists 8,995 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 July 1, 2026.

Showing 5,041–5,100 of 8,995 contractors

1. La Crescenta HVAC

   La Crescenta, CA · CSLB #1120137 · as of July 1, 2026
   Active · clear
2. Lafferty Heating

   Cambria, CA · CSLB #906387 · as of July 1, 2026
   Active · clear
3. Jose Luis Lagunas

   Bakersfield, CA · CSLB #1067096 · as of July 1, 2026
   Active · clear
4. L A Heating & A/c

   Winnetka, CA · CSLB #1026357 · as of July 1, 2026
   Active · clear
5. L A Heating & Air

   Kalamazoo, CA · CSLB #750224 · as of July 1, 2026
   Active · clear
6. La HVAC Expert

   Laguna Niguel, CA · CSLB #1119479 · as of July 1, 2026
   Active · clear
7. La HVAC Service Pro

   Inglewood, CA · CSLB #1084619 · as of July 1, 2026
   Active · clear
8. La Jolla Heating & Air Conditioning

   La Jolla, CA · CSLB #790982 · as of July 1, 2026
   Active · clear
9. La Jolla HVAC

   La Jolla, CA · CSLB #1073890 · as of July 1, 2026
   Active · clear
10. Lake Air INC

    Palm Springs, CA · CSLB #467000 · as of July 1, 2026
    Active · clear
11. Gary Lake Heat & Air INC

    Escondido, CA · CSLB #1028365 · as of July 1, 2026
    Active · clear
12. Lakehills Mechanical LLC

    El Dorado Hills, CA · CSLB #1040762 · as of July 1, 2026
    Active · clear
13. Lakeside Heating And Ac

    Hesperia, CA · CSLB #1077443 · as of July 1, 2026
    Active · clear
14. Lakeside Mechanical LLC

    Loomis, CA · CSLB #1112923 · as of July 1, 2026
    Active · clear
15. Lakeview Mechanical Services

    Oroville, CA · CSLB #847047 · as of July 1, 2026
    Active · clear
16. Lakewood Heating & Air Conditioning INC

    Lakewood, CA · CSLB #597968 · as of July 1, 2026
    Active · clear
17. Lambert Heating And Air Conditioning

    Downey, CA · CSLB #540369 · as of July 1, 2026
    Active · clear
18. Lamb Heating & Air Conditioning

    Lockeford, CA · CSLB #922157 · as of July 1, 2026
    Active · clear
19. Lampo Ac

    San Francisco, CA · CSLB #1156999 · as of July 1, 2026
    Active · clear
20. Landa's Air

    Moreno Valley, CA · CSLB #1129506 · as of July 1, 2026
    Active · clear
21. Landeen Heating And Air Conditioning

    Simi Valley, CA · CSLB #759980 · as of July 1, 2026
    Active · clear
22. 5 S Contracting INC DBA Landmark Mechanical

    San Diego, CA · CSLB #1085295 · as of July 1, 2026
    Active · clear
23. Lanyi USA INC

    Diamond Bar, CA · CSLB #1121762 · as of July 1, 2026
    Active · clear
24. Laprohvac INC

    Santa Clarita, CA · CSLB #1129514 · as of July 1, 2026
    Active · clear
25. La Pro Mechanical INC

    Sunland, CA · CSLB #1052038 · as of July 1, 2026
    Active · clear
26. La Quinta Air Conditioning & Heating INC

    La Quinta, CA · CSLB #902029 · as of July 1, 2026
    Active · clear
27. Roberto Lara

    Simi Valley, CA · CSLB #1086502 · as of July 1, 2026
    Active · clear
28. Kermit Larby Air Conditioning & Sheet Metal INC DBA Kermit Larby

    Palm Desert, CA · CSLB #909011 · as of July 1, 2026
    Active · clear
29. Laris Heating & Air INC

    Sacramento, CA · CSLB #1082506 · as of July 1, 2026
    Active · clear
30. Larry's Maytag Home Appliance DBA Larry's Heating & Cool

    Norwalk, CA · CSLB #1056396 · as of July 1, 2026
    Active · clear
31. Larsen Energy Systems INC

    Santa Rosa, CA · CSLB #621440 · as of July 1, 2026
    Active · clear
32. Larson Air Solutions LLC

    Folsom, CA · CSLB #1065657 · as of July 1, 2026
    Active · clear
33. La Salle Plumbing Heating & Air Conditioning INC

    Lomita, CA · CSLB #679381 · as of July 1, 2026
    Active · clear
34. Lasley Mechanical LLC

    Penngrove, CA · CSLB #739019 · as of July 1, 2026
    Active · clear
35. La Solution Heating And Cooling

    Lancaster, CA · CSLB #1119651 · as of July 1, 2026
    Active · clear
36. Lassen Air And Refrigeration Services

    Shingletown, CA · CSLB #971411 · as of July 1, 2026
    Active · clear
37. Joshua Lassley

    Fresno, CA · CSLB #967003 · as of July 1, 2026
    Active · clear
38. La Standard HVAC INC

    Sunland, CA · CSLB #1072675 · as of July 1, 2026
    Active · clear
39. Last Call HVAC INC

    Whittier, CA · CSLB #1150562 · as of July 1, 2026
    Active · clear
40. Lasting Legacy Plumbing Heating And Air

    Redlands, CA · CSLB #1082542 · as of July 1, 2026
    Active · clear
41. Latim's Heating And Air Conditioning

    Elk Grove, CA · CSLB #941896 · as of July 1, 2026
    Active · clear
42. Latin Plumbing INC

    Santa Ana, CA · CSLB #979940 · as of July 1, 2026
    Active · clear
43. Lawrence Heating And Cooling

    Three Rivers, CA · CSLB #1016642 · as of July 1, 2026
    Active · clear
44. R W Lawson INC

    Yucca Valley, CA · CSLB #711640 · as of July 1, 2026
    Active · clear
45. La Xpress Air & Heating Services INC

    Commerce, CA · CSLB #984230 · as of July 1, 2026
    Active · clear
46. Lazaro Heating & Cooling

    Norwalk, CA · CSLB #1049374 · as of July 1, 2026
    Active · clear
47. L B Air Conditioning

    Diamond Bar, CA · CSLB #1072480 · as of July 1, 2026
    Active · clear
48. L.C Heating And Air INC

    Los Angeles, CA · CSLB #1073586 · as of July 1, 2026
    Active · clear
49. LC Prime Air HVAC

    West Covina, CA · CSLB #1151382 · as of July 1, 2026
    Active · clear
50. LC Quality Heating & Air INC

    Corona, CA · CSLB #1140415 · as of July 1, 2026
    Active · clear
51. Ldi Mechanical INC

    Corona, CA · CSLB #784662 · as of July 1, 2026
    Active · clear
52. Le0's Heating And Air Conditioning

    West Covina, CA · CSLB #901132 · as of July 1, 2026
    Active · clear
53. Leading Edge Air Conditioning

    Cathedral City, CA · CSLB #602809 · as of July 1, 2026
    Active · clear
54. Leal Pro - Mechanical H V A C INC

    Anaheim, CA · CSLB #1061494 · as of July 1, 2026
    Active · clear
55. Lebron Heating And Air INC

    Canyon Country, CA · CSLB #1137314 · as of July 1, 2026
    Active · clear
56. L E C Service

    Torrance, CA · CSLB #382319 · as of July 1, 2026
    Active · clear
57. Dao Le

    Ontario, CA · CSLB #864673 · as of July 1, 2026
    Active · clear
58. Ledesma Heating & Air

    Petaluma, CA · CSLB #901153 · as of July 1, 2026
    Active · clear
59. Chang Soo Lee

    Los Angeles, CA · CSLB #986681 · as of July 1, 2026
    Active · clear
60. Joon Lee

    Los Angeles, CA · CSLB #1005378 · as of July 1, 2026
    Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of July 1, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.