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
- Active · clearGreg Koehler Heating & AirLodi, CA · CSLB #1004814 · as of July 1, 2026
- Active · clearKoen's Air ConditioningHanford, CA · CSLB #409484 · as of July 1, 2026
- Active · clearKohler HeatingSan Francisco, CA · CSLB #951781 · as of July 1, 2026
- Active · clearKenneth KolanoskiCosta Mesa, CA · CSLB #611339 · as of July 1, 2026
- Active · clearKold MechanicalAntelope, CA · CSLB #1043814 · as of July 1, 2026
- Active · clearK O L HVAC RepairsSan Diego, CA · CSLB #1031255 · as of July 1, 2026
- Active · clearKomfort Kuest Air Conditioning & HeatingEl Segundo, CA · CSLB #993501 · as of July 1, 2026
- Active · clearKomfy Cozy Heating & AirCoyote, CA · CSLB #1072708 · as of July 1, 2026
- Active · clearKona Temp INCMission Hills, CA · CSLB #925322 · as of July 1, 2026
- Active · clearKong Mechanical INCPoway, CA · CSLB #1018446 · as of July 1, 2026
- Active · clearKonrad Heating & AirAuburn, CA · CSLB #607629 · as of July 1, 2026
- Active · clearKontrol System IntegratorSan Jose, CA · CSLB #864882 · as of July 1, 2026
- Active · clearKool AirYuba City, CA · CSLB #708105 · as of July 1, 2026
- Active · clearKool-air INCFountain Valley, CA · CSLB #1015972 · as of July 1, 2026
- Active · clearKoolbreeze Heating & AirLa Mesa, CA · CSLB #1107669 · as of July 1, 2026
- Active · clearKool Breeze HVACFresno, CA · CSLB #1020325 · as of July 1, 2026
- Active · clearKool & Comfortable INCWhittier, CA · CSLB #997576 · as of July 1, 2026
- Active · clearKool Dynamics Air Conditioning & Heating INCOxnard, CA · CSLB #1086436 · as of July 1, 2026
- Active · clearKool Guys HVAC INCSylmar, CA · CSLB #1082917 · as of July 1, 2026
- Active · clearKoolman Air Conditioning & HeatingLos Angeles, CA · CSLB #864541 · as of July 1, 2026
- Active · clearKoolpak HVACBrea, CA · CSLB #1049493 · as of July 1, 2026
- Active · clearKoolrite HVAC INCLynwood, CA · CSLB #1100028 · as of July 1, 2026
- Active · clearKosco Heating & Air ConditioningCarmichael, CA · CSLB #677067 · as of July 1, 2026
- Active · clearKosharek HVACPaso Robles, CA · CSLB #1127231 · as of July 1, 2026
- Active · clearKostas HVAC INCMountain House, CA · CSLB #1155237 · as of July 1, 2026
- Active · clearGraydon Kouri Plumbing Heating Air ConditioningFairfield, CA · CSLB #638681 · as of July 1, 2026
- Active · clearK Perkins HVACFort Bragg, CA · CSLB #1067675 · as of July 1, 2026
- Active · clearKramer MechanicalWellington, CA · CSLB #988125 · as of July 1, 2026
- Active · clearK & R Heating And Air Conditioning ServiceConcord, CA · CSLB #986374 · as of July 1, 2026
- Active · clearKrieger MechanicalSouth Lake Tahoe, CA · CSLB #974568 · as of July 1, 2026
- Active · clearK - Rod Heating & Air INCEl Cajon, CA · CSLB #964555 · as of July 1, 2026
- Active · clearKrstich Heating & AirOrange, CA · CSLB #1002612 · as of July 1, 2026
- Active · clearKrummen Heating And Air ConditioningAntioch, CA · CSLB #916792 · as of July 1, 2026
- Active · clearK & S Air Conditioning INCOrange, CA · CSLB #483431 · as of July 1, 2026
- Active · clearK S HVAC INCSan Jose, CA · CSLB #1003964 · as of July 1, 2026
- Active · clearK & S Mechanical INCVacaville, CA · CSLB #979110 · as of July 1, 2026
- Active · clearK T Mechanical INCSanta Cruz, CA · CSLB #902030 · as of July 1, 2026
- Active · clearDavid Guy KubowitzNovato, CA · CSLB #646984 · as of July 1, 2026
- Active · clearKunkel Heating Service INCLemon Grove, CA · CSLB #606474 · as of July 1, 2026
- Active · clearKurt's Plumbing & HeatingBrentwood, CA · CSLB #329497 · as of July 1, 2026
- Active · clearKurtzer's Heating & Air Conditioning INCMonument, CA · CSLB #782511 · as of July 1, 2026
- Active · clearKuya's Climate Control LLCEl Cajon, CA · CSLB #1155355 · as of July 1, 2026
- Active · clearKuzbass CorporationLos Angeles, CA · CSLB #1089497 · as of July 1, 2026
- Active · clearKvach Heating And Cooling INCSacramento, CA · CSLB #1019093 · as of July 1, 2026
- Active · clearKwan Air INCCerritos, CA · CSLB #1114131 · as of July 1, 2026
- Active · clearPenergy EngineeringMillbrae, CA · CSLB #866729 · as of July 1, 2026
- Active · clearKylan Mechanical INCDowney, CA · CSLB #864978 · as of July 1, 2026
- Active · clearKyle Carr Heating & AirLa Verne, CA · CSLB #1121775 · as of July 1, 2026
- Active · clearKyles Air - Conditioning Services29 Palms, CA · CSLB #879171 · as of July 1, 2026
- Active · clearKZ Heating And Air ConditioningOakland, CA · CSLB #1125064 · as of July 1, 2026
- Active · clearLa Ac Services INCChatsworth, CA · CSLB #1048650 · as of July 1, 2026
- Active · clearL A AirVan Nuys, CA · CSLB #733534 · as of July 1, 2026
- Active · clearLa Air Care INCPanorama City, CA · CSLB #1134635 · as of July 1, 2026
- Active · clearL & M Air Conditioning INC DBA L A Air Conditioning & Heating SerVan Nuys, CA · CSLB #805412 · as of July 1, 2026
- Active · clearL A Air & HeatingVan Nuys, CA · CSLB #987874 · as of July 1, 2026
- Active · clearLabs Heating And Air ConditioningAnaheim, CA · CSLB #922887 · as of July 1, 2026
- Active · clearLacayo Colt Plumbing & Heating INCSan Leandro, CA · CSLB #745082 · as of July 1, 2026
- Active · clearLac Heating & Air LLCMontebello, CA · CSLB #1067086 · as of July 1, 2026
- Active · clearLa Climate INCWest Hills, CA · CSLB #1094988 · as of July 1, 2026
- Active · clearLa Comfort Heating & AcBurbank, CA · CSLB #1072249 · as of July 1, 2026
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.