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 5,461–5,520 of 8,936 contractors

1. Mechanical Technology Systems INC

   Orange, CA · CSLB #828672 · as of October 8, 2026
   Active · clear
2. Mechanical Ventilation Systems

   Banning, CA · CSLB #578852 · as of October 8, 2026
   Active · clear
3. Mechmaster HVAC

   Glendale, CA · CSLB #1111253 · as of October 8, 2026
   Active · clear
4. Mech One INC

   Escondido, CA · CSLB #934023 · as of October 8, 2026
   Active · clear
5. Mechpros Heating And Air Conditioning

   Concord, CA · CSLB #996940 · as of October 8, 2026
   Active · clear
6. Medel Air Pro Heating & Air

   Lathrop, CA · CSLB #1025268 · as of October 8, 2026
   Active · clear
7. Media City Ac INC

   Burbank, CA · CSLB #1142647 · as of October 8, 2026
   Active · clear
8. Medina Heating Plumbing And Cooling

   Tracy, CA · CSLB #929091 · as of October 8, 2026
   Active · clear
9. Mega Cooling

   Glendale, CA · CSLB #1078262 · as of October 8, 2026
   Active · clear
10. M Meier & Sons Heating & Air Conditioning INC

    Santa Rosa, CA · CSLB #610649 · as of October 8, 2026
    Active · clear
11. Carlos Alexander Mejia

    Hacienda Heights, CA · CSLB #1095036 · as of October 8, 2026
    Active · clear
12. Mejia Mechanical LLC

    Dos Palos, CA · CSLB #1141630 · as of October 8, 2026
    Active · clear
13. Mejia Services Heating And Air Conditioning

    Hollister, CA · CSLB #1102107 · as of October 8, 2026
    Active · clear
14. Melendez Heating And Air

    Los Angeles, CA · CSLB #1075094 · as of October 8, 2026
    Active · clear
15. Melendez Mechanical

    Lake Elsinore, CA · CSLB #1085539 · as of October 8, 2026
    Active · clear
16. Melgar & Associates Mechanical INC

    Livermore, CA · CSLB #1140422 · as of October 8, 2026
    Active · clear
17. Melgar Mechanical INC

    Santa Clara, CA · CSLB #1073416 · as of October 8, 2026
    Active · clear
18. Alan Paul Melkonian

    Fresno, CA · CSLB #829517 · as of October 8, 2026
    Active · clear
19. Mel's Heating & Air INC

    Turlock, CA · CSLB #919419 · as of October 8, 2026
    Active · clear
20. Melton Sheet Metal

    Fresno, CA · CSLB #170713 · as of October 8, 2026
    Active · clear
21. Menasco Air Conditioning Service

    Moreno Valley, CA · CSLB #1094945 · as of October 8, 2026
    Active · clear
22. Mendez Air Conditioning & Heating

    Thousand Palms, CA · CSLB #791437 · as of October 8, 2026
    Active · clear
23. Mendez Air Heating & Air Conditioning

    Oakley, CA · CSLB #778884 · as of October 8, 2026
    Active · clear
24. Joseph Mendez

    Torrance, CA · CSLB #395144 · as of October 8, 2026
    Active · clear
25. Mendocino Coast Services

    Fort Bragg, CA · CSLB #900579 · as of October 8, 2026
    Active · clear
26. Christopher Henry Mendoza

    North Hollywood, CA · CSLB #1131160 · as of October 8, 2026
    Active · clear
27. Esteban Mendoza

    Port Hueneme, CA · CSLB #1091330 · as of October 8, 2026
    Active · clear
28. Menifee Valley Air Conditioning INC

    Hemet, CA · CSLB #765865 · as of October 8, 2026
    Active · clear
29. Menini Heating & Air Conditioning INC

    Oak Run, CA · CSLB #777885 · as of October 8, 2026
    Active · clear
30. Mercader Heating Cooling & Ventilation

    Riverside, CA · CSLB #1096428 · as of October 8, 2026
    Active · clear
31. Mercer Mechanical

    Cameron Park, CA · CSLB #1073964 · as of October 8, 2026
    Active · clear
32. Merchants Building Maintenance Company

    Monterey Park, CA · CSLB #861937 · as of October 8, 2026
    Active · clear
33. Mercury Air Conditioning

    Lake Havasu City, CA · CSLB #949958 · as of October 8, 2026
    Active · clear
34. Mercury Heating And Air Conditioning INC

    Brentwood, CA · CSLB #1040640 · as of October 8, 2026
    Active · clear
35. Mericle Mechanical INC

    Placentia, CA · CSLB #776860 · as of October 8, 2026
    Active · clear
36. Merino Installation Services LLC

    San Francisco, CA · CSLB #1161275 · as of October 8, 2026
    Active · clear
37. Merit Heating And Air

    Pismo Beach, CA · CSLB #735542 · as of October 8, 2026
    Active · clear
38. Meriwether Air Conditioning

    Chico, CA · CSLB #308723 · as of October 8, 2026
    Active · clear
39. Merrick & Associates INC

    San Diego, CA · CSLB #454270 · as of October 8, 2026
    Active · clear
40. Mesa3/mechanical Environmental Systems Analysis And Adjustment

    Santa Clara, CA · CSLB #498292 · as of October 8, 2026
    Active · clear
41. Mesa Air Heating / Air Conditioning INC

    Nipomo, CA · CSLB #690241 · as of October 8, 2026
    Active · clear
42. Jonathan E Mesple

    Clovis, CA · CSLB #661443 · as of October 8, 2026
    Active · clear
43. Metal Masters Air Conditioning

    White City, CA · CSLB #382691 · as of October 8, 2026
    Active · clear
44. Method HVAC Services INC

    Folsom, CA · CSLB #1090807 · as of October 8, 2026
    Active · clear
45. Metric Heating And Air

    Riverside, CA · CSLB #1150482 · as of October 8, 2026
    Active · clear
46. Metric HVAC

    Bellflower, CA · CSLB #1075525 · as of October 8, 2026
    Active · clear
47. Metro Cooling & Heating Pros LLC

    Irvine, CA · CSLB #1158627 · as of October 8, 2026
    Active · clear
48. Metro Mechanical

    Santa Cruz, CA · CSLB #653263 · as of October 8, 2026
    Active · clear
49. Metro Mechanical INC

    Gilroy, CA · CSLB #825697 · as of October 8, 2026
    Active · clear
50. Metropolitan Heating & Air Conditioning INC

    Pasadena, CA · CSLB #722516 · as of October 8, 2026
    Active · clear
51. Metropolitan Heating And Air Conditioning

    Irvine, CA · CSLB #767552 · as of October 8, 2026
    Active · clear
52. Metz Air Control LLC

    Austin, CA · CSLB #1142864 · as of October 8, 2026
    Active · clear
53. John Meyer A/c

    Riverside, CA · CSLB #893501 · as of October 8, 2026
    Active · clear
54. Meyer & Sons Heating Plumbing & A/c INC

    Dunsmuir, CA · CSLB #674874 · as of October 8, 2026
    Active · clear
55. M G Air & Cooling INC

    Inglewood, CA · CSLB #1157104 · as of October 8, 2026
    Active · clear
56. MGC Air Heating & Cooling

    Highland, CA · CSLB #1143319 · as of October 8, 2026
    Active · clear
57. M G Heating & Air Conditioning

    Glendale, CA · CSLB #871101 · as of October 8, 2026
    Active · clear
58. MG Heating & Cooling

    Escondido, CA · CSLB #1084188 · as of October 8, 2026
    Active · clear
59. Ronny A Macias DBA M G I Heating & Air Conditioning

    Murrieta, CA · CSLB #943020 · as of October 8, 2026
    Active · clear
60. M G'S Air Conditioning & Heating

    Tulare, CA · CSLB #960470 · 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.