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 6,661–6,720 of 8,936 contractors

1. Robert L Dias DBA Rd's Service Contractor

   Concord, CA · CSLB #523223 · as of October 8, 2026
   Active · clear
2. Reaco Heating & Air Conditioning INC

   Gilroy, CA · CSLB #715426 · as of October 8, 2026
   Active · clear
3. Ready Air INC

   Ceres, CA · CSLB #1148075 · as of October 8, 2026
   Active · clear
4. Re Air INC

   Glendora, CA · CSLB #595054 · as of October 8, 2026
   Active · clear
5. Real Air HVAC

   Castaic, CA · CSLB #1082388 · as of October 8, 2026
   Active · clear
6. Real Mechanical Solutions LLC

   Newbury Park, CA · CSLB #1124533 · as of October 8, 2026
   Active · clear
7. Real Plumbing And Heating INC

   Clearlake Oaks, CA · CSLB #838680 · as of October 8, 2026
   Active · clear
8. Real Tech Heating & Ac

   Newhall, CA · CSLB #1134340 · as of October 8, 2026
   Active · clear
9. Real Time Bros Heating & Air Conditioning INC

   Tustin, CA · CSLB #1119816 · as of October 8, 2026
   Active · clear
10. Ream's Mechanical HVAC Service

    San Jose, CA · CSLB #1157168 · as of October 8, 2026
    Active · clear
11. Rea's Air Conditioning And Heating INC

    Apple Valley, CA · CSLB #1086780 · as of October 8, 2026
    Active · clear
12. Rebel Air Services INC

    Sacramento, CA · CSLB #1131212 · as of October 8, 2026
    Active · clear
13. Rebel Mechanical Heating & Air LLC

    Lakeside, CA · CSLB #1083493 · as of October 8, 2026
    Active · clear
14. Recendiz Mechanical Air Conditioning And Heating

    Desert Hot Springs, CA · CSLB #1113982 · as of October 8, 2026
    Active · clear
15. Red Bluff Heating And Air Conditioning

    Red Bluff, CA · CSLB #1008961 · as of October 8, 2026
    Active · clear
16. Redding Comfort Heating & Air INC

    Redding, CA · CSLB #772491 · as of October 8, 2026
    Active · clear
17. Redeemed Air

    Fairfield, CA · CSLB #798887 · as of October 8, 2026
    Active · clear
18. Red Feather Mechanical

    San Jose, CA · CSLB #1132403 · as of October 8, 2026
    Active · clear
19. Red Fox Heating & Cooling

    Oakland, CA · CSLB #1095334 · as of October 8, 2026
    Active · clear
20. Redhawk Mechanical INC

    Temecula, CA · CSLB #792522 · as of October 8, 2026
    Active · clear
21. Red Lilly Plumbing INC

    Los Angeles, CA · CSLB #218270 · as of October 8, 2026
    Active · clear
22. Redline Air INC

    Chino, CA · CSLB #827716 · as of October 8, 2026
    Active · clear
23. Redline Air Systems

    El Dorado Hills, CA · CSLB #909316 · as of October 8, 2026
    Active · clear
24. Redline Mechanical INC

    Buena Park, CA · CSLB #580411 · as of October 8, 2026
    Active · clear
25. Red Mountain Heating And Air INC

    Novato, CA · CSLB #1076741 · as of October 8, 2026
    Active · clear
26. Red Rock HVAC Service

    Canyon Country, CA · CSLB #1103341 · as of October 8, 2026
    Active · clear
27. Redwire HVAC INC

    Burlingame, CA · CSLB #1106003 · as of October 8, 2026
    Active · clear
28. Redwood Empire Mechanical INC

    Santa Rosa, CA · CSLB #917040 · as of October 8, 2026
    Active · clear
29. Redwood Mechanical

    Eureka, CA · CSLB #1032157 · as of October 8, 2026
    Active · clear
30. Reed's Heating

    Paso Robles, CA · CSLB #945895 · as of October 8, 2026
    Active · clear
31. Ming Choo DBA Reel Climate Solutions

    Riverside, CA · CSLB #967082 · as of October 8, 2026
    Active · clear
32. R E E Mechanical INC

    Temecula, CA · CSLB #940700 · as of October 8, 2026
    Active · clear
33. Reese Mechanical INC

    Murrieta, CA · CSLB #858250 · as of October 8, 2026
    Active · clear
34. Refer Mechanics Refrigeration

    Apple Valley, CA · CSLB #1143433 · as of October 8, 2026
    Active · clear
35. Refined HVAC

    Murrieta, CA · CSLB #1158860 · as of October 8, 2026
    Active · clear
36. Refresh Duct & Chimney Cleaning

    Orange, CA · CSLB #1070281 · as of October 8, 2026
    Active · clear
37. Danny B Meinecke DBA Refreshed Heating & Cooling

    Concord, CA · CSLB #697406 · as of October 8, 2026
    Active · clear
38. Refresh Heating And Cooling LLC

    Citrus Heights, CA · CSLB #1140241 · as of October 8, 2026
    Active · clear
39. Refrigeration Contracting & Maintenance INC

    City Of Commerce, CA · CSLB #427705 · as of October 8, 2026
    Active · clear
40. The Refrigeration Mechanic INC

    Piru, CA · CSLB #952602 · as of October 8, 2026
    Active · clear
41. Refrigeration Supplies Distributor

    Lake Forest, CA · CSLB #888867 · as of October 8, 2026
    Active · clear
42. Refrigeration Unlimited INC

    Fullerton, CA · CSLB #764462 · as of October 8, 2026
    Active · clear
43. Regan's Heating And Air Conditioning

    Paso Robles, CA · CSLB #1004418 · as of October 8, 2026
    Active · clear
44. Regency Hood Services INC

    Van Nuys, CA · CSLB #1100945 · as of October 8, 2026
    Active · clear
45. Regency Mechanical INC

    North Highlands, CA · CSLB #787255 · as of October 8, 2026
    Active · clear
46. Re HVAC Services

    Rancho Cucamonga, CA · CSLB #1088141 · as of October 8, 2026
    Active · clear
47. Reid Sheet Metal Services INC

    American Canyon, CA · CSLB #754692 · as of October 8, 2026
    Active · clear
48. Reindeer Ac And Refrigeration Company

    Porter Ranch, CA · CSLB #857597 · as of October 8, 2026
    Active · clear
49. Reitz Heating & Air INC

    Ramona, CA · CSLB #1055356 · as of October 8, 2026
    Active · clear
50. Relaxed Heating And Air INC

    Canoga Park, CA · CSLB #917357 · as of October 8, 2026
    Active · clear
51. Reliable Air

    Sacramento, CA · CSLB #1086614 · as of October 8, 2026
    Active · clear
52. Reliable Air Conditioning & Heating

    California City, CA · CSLB #534513 · as of October 8, 2026
    Active · clear
53. Reliable Air Conditioning & Heating INC

    North Hollywood, CA · CSLB #613487 · as of October 8, 2026
    Active · clear
54. Reliable Air Mechanical

    San Jose, CA · CSLB #954400 · as of October 8, 2026
    Active · clear
55. Reliable Appliance Service INC

    El Cajon, CA · CSLB #962632 · as of October 8, 2026
    Active · clear
56. Reliable Appliances Heating And Air

    Norco, CA · CSLB #925496 · as of October 8, 2026
    Active · clear
57. Reliable Cooling & Heating

    Sacramento, CA · CSLB #1130799 · as of October 8, 2026
    Active · clear
58. Reliable Heating & Air Conditioning

    San Jose, CA · CSLB #1052882 · as of October 8, 2026
    Active · clear
59. Reliable Heating And Air

    West Hills, CA · CSLB #1135270 · as of October 8, 2026
    Active · clear
60. Reliable Heating And Air Conditioning

    Ojai, CA · CSLB #476393 · 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.