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 5,101–5,160 of 8,936 contractors

1. Leo's Heating & Air

   San Bernardino, CA · CSLB #1136176 · as of October 8, 2026
   Active · clear
2. Lerman Pros HVAC INC

   Van Nuys, CA · CSLB #1085495 · as of October 8, 2026
   Active · clear
3. Steven Le

   Westminster, CA · CSLB #1034308 · as of October 8, 2026
   Active · clear
4. Level Up Heating And Air

   Chowchilla, CA · CSLB #1140460 · as of October 8, 2026
   Active · clear
5. Level Up Heating And Air Conditioning

   Highland, CA · CSLB #1113535 · as of October 8, 2026
   Active · clear
6. Chris Levering Heating & Air Conditioning

   San Leandro, CA · CSLB #797190 · as of October 8, 2026
   Active · clear
7. Lewis Air INC

   Rancho Santa Margarita, CA · CSLB #575873 · as of October 8, 2026
   Active · clear
8. Daniel Lewis

   Santa Clara, CA · CSLB #1083212 · as of October 8, 2026
   Active · clear
9. Lewis Mechanical Systems

   Pico Rivera, CA · CSLB #1038304 · as of October 8, 2026
   Active · clear
10. Lex Air Heating & Cooling

    Hesperia, CA · CSLB #1127561 · as of October 8, 2026
    Active · clear
11. Lexer Mechanical INC

    Antelope, CA · CSLB #1145398 · as of October 8, 2026
    Active · clear
12. Ley Heating & Air Conditioning INC

    San Jacinto, CA · CSLB #745249 · as of October 8, 2026
    Active · clear
13. LG Heating And Cooling

    Roseville, CA · CSLB #1048653 · as of October 8, 2026
    Active · clear
14. LGL Heating And Air Conditioning

    San Diego, CA · CSLB #1161919 · as of October 8, 2026
    Active · clear
15. LH Heating And Air

    Napa, CA · CSLB #1103438 · as of October 8, 2026
    Active · clear
16. Liang's HVAC

    West Covina, CA · CSLB #1160161 · as of October 8, 2026
    Active · clear
17. Lias Mechanical INC

    Oakland, CA · CSLB #817456 · as of October 8, 2026
    Active · clear
18. Liberty Air LLC

    Encinitas, CA · CSLB #837996 · as of October 8, 2026
    Active · clear
19. Liberty Cooling & Heating INC

    Phoenix, CA · CSLB #937358 · as of October 8, 2026
    Active · clear
20. Liberty Plumbing & Heating

    Los Angeles, CA · CSLB #701083 · as of October 8, 2026
    Active · clear
21. Liberty Plumbing Heating & Air Conditioning INC

    Murrieta, CA · CSLB #761640 · as of October 8, 2026
    Active · clear
22. Chun Li

    Ontario, CA · CSLB #1054025 · as of October 8, 2026
    Active · clear
23. Life Time Air INC

    Glendale, CA · CSLB #1150892 · as of October 8, 2026
    Active · clear
24. Lighter Living CO

    San Diego, CA · CSLB #998214 · as of October 8, 2026
    Active · clear
25. Lighthouse A/c Service

    Rialto, CA · CSLB #958467 · as of October 8, 2026
    Active · clear
26. Light House Heating & Cooling INC

    Canyon Lake, CA · CSLB #1062152 · as of October 8, 2026
    Active · clear
27. Lighthouse Plumbing & Heating

    Gilroy, CA · CSLB #782136 · as of October 8, 2026
    Active · clear
28. Lightning Air Conditioning And Heating LLC

    Indio, CA · CSLB #1121705 · as of October 8, 2026
    Active · clear
29. Lightning HVAC Services INC

    Chino, CA · CSLB #1157573 · as of October 8, 2026
    Active · clear
30. Likai Chen HVAC INC

    Diamond Bar, CA · CSLB #926434 · as of October 8, 2026
    Active · clear
31. Limbach Company LP

    Warrendale, CA · CSLB #962922 · as of October 8, 2026
    Active · clear
32. Limitless Appliance, Heating And Air

    Marysville, CA · CSLB #1012930 · as of October 8, 2026
    Active · clear
33. Lims Heating & Cooling INC

    City Of Industry, CA · CSLB #1160018 · as of October 8, 2026
    Active · clear
34. Lindsey's Heat & Air INC

    Arcadia, CA · CSLB #1041743 · as of October 8, 2026
    Active · clear
35. Linear Air Conditioning & Heating

    Tustin, CA · CSLB #932561 · as of October 8, 2026
    Active · clear
36. Linksman Air LLC

    La Quinta, CA · CSLB #1161432 · as of October 8, 2026
    Active · clear
37. Lin's Air Condition INC

    San Gabriel, CA · CSLB #981177 · as of October 8, 2026
    Active · clear
38. Lionstone Construction INC DBA Lionstone Mechanical Company

    Morgan Hill, CA · CSLB #1106387 · as of October 8, 2026
    Active · clear
39. Lira's Mechanical INC

    San Bernardino, CA · CSLB #1048955 · as of October 8, 2026
    Active · clear
40. Lissick's Heating And Air Conditioning

    Fairfield, CA · CSLB #926689 · as of October 8, 2026
    Active · clear
41. Lito's Heating & Cooling Mechanical Services

    Chula Vista, CA · CSLB #1160597 · as of October 8, 2026
    Active · clear
42. The Little Guy's Heating And Air Conditioning INC

    Manteca, CA · CSLB #1126772 · as of October 8, 2026
    Active · clear
43. Yong Liu

    Placentia, CA · CSLB #1144911 · as of October 8, 2026
    Active · clear
44. Livegreen Mechanical And Energy Management Systems

    Long Beach, CA · CSLB #1129860 · as of October 8, 2026
    Active · clear
45. Lively's Heating & Air

    Yucaipa, CA · CSLB #1132040 · as of October 8, 2026
    Active · clear
46. Livermore Mechanical INC

    Livermore, CA · CSLB #986999 · as of October 8, 2026
    Active · clear
47. Liverpool Ac Incorporated

    Woodland Hills, CA · CSLB #1081633 · as of October 8, 2026
    Active · clear
48. Living Air Design LLC

    Brea, CA · CSLB #1091394 · as of October 8, 2026
    Active · clear
49. Yen Lin Li Company INC

    Oakland, CA · CSLB #530114 · as of October 8, 2026
    Active · clear
50. Youping Li

    Rosemead, CA · CSLB #982739 · as of October 8, 2026
    Active · clear
51. Lizarraga & Barajas Heating & Air Conditioning

    Sylmar, CA · CSLB #1104545 · as of October 8, 2026
    Active · clear
52. L J Heating And Air Conditioning INC

    Marysville, CA · CSLB #1115117 · as of October 8, 2026
    Active · clear
53. L J Mechanical Heating & Cooling INC

    Gilroy, CA · CSLB #1048020 · as of October 8, 2026
    Active · clear
54. LK Air-cooling INC

    Los Angeles, CA · CSLB #1097129 · as of October 8, 2026
    Active · clear
55. L & L Heating And Air Conditioning

    Rossmoor, CA · CSLB #899491 · as of October 8, 2026
    Active · clear
56. LL Heating And Air Conditioning

    San Jose, CA · CSLB #1120831 · as of October 8, 2026
    Active · clear
57. Jean Marcel Llorens

    Whittier, CA · CSLB #1005216 · as of October 8, 2026
    Active · clear
58. L M C Air Conditioning & Heating

    Indio, CA · CSLB #1012807 · as of October 8, 2026
    Active · clear
59. LM Heating & Cooling INC

    Los Angeles, CA · CSLB #1145426 · as of October 8, 2026
    Active · clear
60. L & M HVAC

    Rancho Cucamonga, CA · CSLB #1095071 · 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.