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 4,981–5,040 of 8,995 contractors

Greg Koehler Heating & Air
Lodi, CA · CSLB #1004814 · as of July 1, 2026
Active · clear
Koen's Air Conditioning
Hanford, CA · CSLB #409484 · as of July 1, 2026
Active · clear
Kohler Heating
San Francisco, CA · CSLB #951781 · as of July 1, 2026
Active · clear
Kenneth Kolanoski
Costa Mesa, CA · CSLB #611339 · as of July 1, 2026
Active · clear
Kold Mechanical
Antelope, CA · CSLB #1043814 · as of July 1, 2026
Active · clear
K O L HVAC Repairs
San Diego, CA · CSLB #1031255 · as of July 1, 2026
Active · clear
Komfort Kuest Air Conditioning & Heating
El Segundo, CA · CSLB #993501 · as of July 1, 2026
Active · clear
Komfy Cozy Heating & Air
Coyote, CA · CSLB #1072708 · as of July 1, 2026
Active · clear
Kona Temp INC
Mission Hills, CA · CSLB #925322 · as of July 1, 2026
Active · clear
Kong Mechanical INC
Poway, CA · CSLB #1018446 · as of July 1, 2026
Active · clear
Konrad Heating & Air
Auburn, CA · CSLB #607629 · as of July 1, 2026
Active · clear
Kontrol System Integrator
San Jose, CA · CSLB #864882 · as of July 1, 2026
Active · clear
Kool Air
Yuba City, CA · CSLB #708105 · as of July 1, 2026
Active · clear
Kool-air INC
Fountain Valley, CA · CSLB #1015972 · as of July 1, 2026
Active · clear
Koolbreeze Heating & Air
La Mesa, CA · CSLB #1107669 · as of July 1, 2026
Active · clear
Kool Breeze HVAC
Fresno, CA · CSLB #1020325 · as of July 1, 2026
Active · clear
Kool & Comfortable INC
Whittier, CA · CSLB #997576 · as of July 1, 2026
Active · clear
Kool Dynamics Air Conditioning & Heating INC
Oxnard, CA · CSLB #1086436 · as of July 1, 2026
Active · clear
Kool Guys HVAC INC
Sylmar, CA · CSLB #1082917 · as of July 1, 2026
Active · clear
Koolman Air Conditioning & Heating
Los Angeles, CA · CSLB #864541 · as of July 1, 2026
Active · clear
Koolpak HVAC
Brea, CA · CSLB #1049493 · as of July 1, 2026
Active · clear
Koolrite HVAC INC
Lynwood, CA · CSLB #1100028 · as of July 1, 2026
Active · clear
Kosco Heating & Air Conditioning
Carmichael, CA · CSLB #677067 · as of July 1, 2026
Active · clear
Kosharek HVAC
Paso Robles, CA · CSLB #1127231 · as of July 1, 2026
Active · clear
Kostas HVAC INC
Mountain House, CA · CSLB #1155237 · as of July 1, 2026
Active · clear
Graydon Kouri Plumbing Heating Air Conditioning
Fairfield, CA · CSLB #638681 · as of July 1, 2026
Active · clear
K Perkins HVAC
Fort Bragg, CA · CSLB #1067675 · as of July 1, 2026
Active · clear
Kramer Mechanical
Wellington, CA · CSLB #988125 · as of July 1, 2026
Active · clear
K & R Heating And Air Conditioning Service
Concord, CA · CSLB #986374 · as of July 1, 2026
Active · clear
Krieger Mechanical
South Lake Tahoe, CA · CSLB #974568 · as of July 1, 2026
Active · clear
K - Rod Heating & Air INC
El Cajon, CA · CSLB #964555 · as of July 1, 2026
Active · clear
Krstich Heating & Air
Orange, CA · CSLB #1002612 · as of July 1, 2026
Active · clear
Krummen Heating And Air Conditioning
Antioch, CA · CSLB #916792 · as of July 1, 2026
Active · clear
K & S Air Conditioning INC
Orange, CA · CSLB #483431 · as of July 1, 2026
Active · clear
K S HVAC INC
San Jose, CA · CSLB #1003964 · as of July 1, 2026
Active · clear
K & S Mechanical INC
Vacaville, CA · CSLB #979110 · as of July 1, 2026
Active · clear
K T Mechanical INC
Santa Cruz, CA · CSLB #902030 · as of July 1, 2026
Active · clear
David Guy Kubowitz
Novato, CA · CSLB #646984 · as of July 1, 2026
Active · clear
Kunkel Heating Service INC
Lemon Grove, CA · CSLB #606474 · as of July 1, 2026
Active · clear
Kurt's Plumbing & Heating
Brentwood, CA · CSLB #329497 · as of July 1, 2026
Active · clear
Kurtzer's Heating & Air Conditioning INC
Monument, CA · CSLB #782511 · as of July 1, 2026
Active · clear
Kuya's Climate Control LLC
El Cajon, CA · CSLB #1155355 · as of July 1, 2026
Active · clear
Kuzbass Corporation
Los Angeles, CA · CSLB #1089497 · as of July 1, 2026
Active · clear
Kvach Heating And Cooling INC
Sacramento, CA · CSLB #1019093 · as of July 1, 2026
Active · clear
Kwan Air INC
Cerritos, CA · CSLB #1114131 · as of July 1, 2026
Active · clear
Penergy Engineering
Millbrae, CA · CSLB #866729 · as of July 1, 2026
Active · clear
Kylan Mechanical INC
Downey, CA · CSLB #864978 · as of July 1, 2026
Active · clear
Kyle Carr Heating & Air
La Verne, CA · CSLB #1121775 · as of July 1, 2026
Active · clear
Kyles Air - Conditioning Services
29 Palms, CA · CSLB #879171 · as of July 1, 2026
Active · clear
KZ Heating And Air Conditioning
Oakland, CA · CSLB #1125064 · as of July 1, 2026
Active · clear
La Ac Services INC
Chatsworth, CA · CSLB #1048650 · as of July 1, 2026
Active · clear
L A Air
Van Nuys, CA · CSLB #733534 · as of July 1, 2026
Active · clear
La Air Care INC
Panorama City, CA · CSLB #1134635 · as of July 1, 2026
Active · clear
L & M Air Conditioning INC DBA L A Air Conditioning & Heating Ser
Van Nuys, CA · CSLB #805412 · as of July 1, 2026
Active · clear
L A Air & Heating
Van Nuys, CA · CSLB #987874 · as of July 1, 2026
Active · clear
Labs Heating And Air Conditioning
Anaheim, CA · CSLB #922887 · as of July 1, 2026
Active · clear
Lacayo Colt Plumbing & Heating INC
San Leandro, CA · CSLB #745082 · as of July 1, 2026
Active · clear
Lac Heating & Air LLC
Montebello, CA · CSLB #1067086 · as of July 1, 2026
Active · clear
La Climate INC
West Hills, CA · CSLB #1094988 · as of July 1, 2026
Active · clear
La Comfort Heating & Ac
Burbank, CA · CSLB #1072249 · 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.