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 7,981–8,040 of 8,936 contractors

1. Ultimate Comfort Solutions

   Yuba City, CA · CSLB #1030802 · as of October 8, 2026
   Active · clear
2. Ultimate Heating And Air Conditioning INC

   Panorama City, CA · CSLB #1093404 · as of October 8, 2026
   Active · clear
3. Ultimate Heating & Cooling INC

   Watsonville, CA · CSLB #1144941 · as of October 8, 2026
   Active · clear
4. Ultimate Mechanical

   Los Angeles, CA · CSLB #1076827 · as of October 8, 2026
   Active · clear
5. Ultra Air HVAC

   Santa Rosa, CA · CSLB #1117869 · as of October 8, 2026
   Active · clear
6. Ultracool Heating And Air Conditioning

   Van Nuys, CA · CSLB #1131593 · as of October 8, 2026
   Active · clear
7. Ultsch Heating And Cooling

   Willits, CA · CSLB #1155534 · as of October 8, 2026
   Active · clear
8. U M Air INC

   Downey, CA · CSLB #1050013 · as of October 8, 2026
   Active · clear
9. Umbrella Heating And Air Conditioning INC

   Turlock, CA · CSLB #1042439 · as of October 8, 2026
   Active · clear
10. Umc Heating & Air Conditioning Refrigeration

    Burbank, CA · CSLB #941413 · as of October 8, 2026
    Active · clear
11. Umpqua Heating And Cooling

    Winchester, CA · CSLB #1157308 · as of October 8, 2026
    Active · clear
12. Un C

    Artesia, CA · CSLB #1138303 · as of October 8, 2026
    Active · clear
13. Unified Mechanical

    Oakley, CA · CSLB #1158798 · as of October 8, 2026
    Active · clear
14. Unique Home Services Heating & Air

    Sacramento, CA · CSLB #1135933 · as of October 8, 2026
    Active · clear
15. Unique Indoor Comfort INC

    Northridge, CA · CSLB #974870 · as of October 8, 2026
    Active · clear
16. Unique Standard Mechanical INC

    Santa Clara, CA · CSLB #962752 · as of October 8, 2026
    Active · clear
17. United Air Conditioning And Heating INC

    Sylmar, CA · CSLB #1012066 · as of October 8, 2026
    Active · clear
18. United Airflow Heating And Cooling

    Riverside, CA · CSLB #1119276 · as of October 8, 2026
    Active · clear
19. United Air Heating And Air Conditioning

    Visalia, CA · CSLB #1127562 · as of October 8, 2026
    Active · clear
20. United Air System

    Glendale, CA · CSLB #637425 · as of October 8, 2026
    Active · clear
21. United Building Service Mechanical INC

    West Sacramento, CA · CSLB #845877 · as of October 8, 2026
    Active · clear
22. United Climate Control

    Auburn, CA · CSLB #1128777 · as of October 8, 2026
    Active · clear
23. United Elite HVAC LLC

    La Mirada, CA · CSLB #1156831 · as of October 8, 2026
    Active · clear
24. United Heating & Air Conditioning Services

    Torrance, CA · CSLB #1153517 · as of October 8, 2026
    Active · clear
25. United Heating And Air

    Dixon, CA · CSLB #1094200 · as of October 8, 2026
    Active · clear
26. United Heating And Air

    Ceres, CA · CSLB #1130646 · as of October 8, 2026
    Active · clear
27. United Home Air

    Poway, CA · CSLB #1054398 · as of October 8, 2026
    Active · clear
28. United HVAC Repair

    San Francisco, CA · CSLB #1152346 · as of October 8, 2026
    Active · clear
29. United Mechanical Contractors INC

    Klamath Falls, CA · CSLB #495316 · as of October 8, 2026
    Active · clear
30. United Pro HVAC INC

    West Hills, CA · CSLB #1140877 · as of October 8, 2026
    Active · clear
31. United Team Mechanical California

    Mountain Green, CA · CSLB #460935 · as of October 8, 2026
    Active · clear
32. Universal Air

    Victorville, CA · CSLB #976516 · as of October 8, 2026
    Active · clear
33. Universal Air And Heating Comfort INC

    Perris, CA · CSLB #1123718 · as of October 8, 2026
    Active · clear
34. Universal Air Conditioning CO INC

    Yorba Linda, CA · CSLB #252875 · as of October 8, 2026
    Active · clear
35. Universal Air Conditioning & Heating

    Rancho Cucamonga, CA · CSLB #1022509 · as of October 8, 2026
    Active · clear
36. Universal Air HVAC INC

    Atwater, CA · CSLB #1044195 · as of October 8, 2026
    Active · clear
37. Universal Heating & Air Conditioning

    Fresno, CA · CSLB #976775 · as of October 8, 2026
    Active · clear
38. Universal Heating And Air

    Tustin, CA · CSLB #1081097 · as of October 8, 2026
    Active · clear
39. Universal Heating And Air Conditioning

    Penryn, CA · CSLB #628358 · as of October 8, 2026
    Active · clear
40. WM Universal Projects INC DBA Universal Heating & Cooling

    Lathrop, CA · CSLB #1122355 · as of October 8, 2026
    Active · clear
41. Universal HVAC Service INC

    San Leandro, CA · CSLB #1149569 · as of October 8, 2026
    Active · clear
42. Universal HVAC Systems

    Canyon Country, CA · CSLB #990006 · as of October 8, 2026
    Active · clear
43. Universal Roofing

    Los Angeles, CA · CSLB #1069748 · as of October 8, 2026
    Active · clear
44. Unlimited Climate Control INC

    Simi Valley, CA · CSLB #1028229 · as of October 8, 2026
    Active · clear
45. Unlimited Heating And Air Conditioning INC

    Riverside, CA · CSLB #1093044 · as of October 8, 2026
    Active · clear
46. Up & Above Heating And Cooling Services

    Pittsburg, CA · CSLB #1128431 · as of October 8, 2026
    Active · clear
47. Upfront Heating And Air Conditioning

    North San Juan, CA · CSLB #1093187 · as of October 8, 2026
    Active · clear
48. Upgrade Heating And Cooling LLC

    Temecula, CA · CSLB #1139777 · as of October 8, 2026
    Active · clear
49. Upton Home Services INC DBA Upton Air

    Acampo, CA · CSLB #1055670 · as of October 8, 2026
    Active · clear
50. Urban City Mechanical

    Pittsburg, CA · CSLB #1093253 · as of October 8, 2026
    Active · clear
51. Urban Mechanical

    Lake Havasu City, CA · CSLB #594181 · as of October 8, 2026
    Active · clear
52. Edwin Urbina

    San Dimas, CA · CSLB #912215 · as of October 8, 2026
    Active · clear
53. Urgent Ac

    Pacoima, CA · CSLB #1029740 · as of October 8, 2026
    Active · clear
54. Urgent Repair Appliances & HVAC INC

    Murrieta, CA · CSLB #1136897 · as of October 8, 2026
    Active · clear
55. Urso Air Systems INC

    Wilmington, CA · CSLB #961408 · as of October 8, 2026
    Active · clear
56. U R Thermair Air Conditioning & Heating

    Riverside, CA · CSLB #1088240 · as of October 8, 2026
    Active · clear
57. USA Copeland HVAC INC

    Glendale, CA · CSLB #1134884 · as of October 8, 2026
    Active · clear
58. USA Green Air INC

    North Hollywood, CA · CSLB #1075952 · as of October 8, 2026
    Active · clear
59. U S Air Conditioning & Heating

    Newbury Park, CA · CSLB #829995 · as of October 8, 2026
    Active · clear
60. Usair Hvac/r Services

    Corona, CA · CSLB #1151311 · 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.