Licensed Heating & Air Conditioning (C-20) contractors in California
The California Contractors State License Board (CSLB) lists 8,930 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 4, 2026.
Showing 7,741–7,800 of 8,930 contractors
- Active · clearThe Plumbing DoctorEscondido, CA · CSLB #749053 · as of July 4, 2026
- Active · clearThe Real Heating And CoolingMission Hills, CA · CSLB #1068327 · as of July 4, 2026
- Active · clearThe Refrigeration COHesperia, CA · CSLB #925985 · as of July 4, 2026
- Active · clearThermal Air Conditioning INCPasadena, CA · CSLB #845095 · as of July 4, 2026
- Active · clearThermal AllianceMariposa, CA · CSLB #719460 · as of July 4, 2026
- Active · clearThermal Comfort Systems INCNorthridge, CA · CSLB #440532 · as of July 4, 2026
- Active · clearThermal Concepts INCChino, CA · CSLB #912887 · as of July 4, 2026
- Active · clearThermal ControlTooele, CA · CSLB #671689 · as of July 4, 2026
- Active · clearThermal Control INC DBA Thermal Control HTG & A/c INCRiverside, CA · CSLB #722928 · as of July 4, 2026
- Active · clearThermal-cool INCRiverside, CA · CSLB #719787 · as of July 4, 2026
- Active · clearThermal DynamicsVerdi, CA · CSLB #1135608 · as of July 4, 2026
- Active · clearThermal Eagle HVACWinchester, CA · CSLB #1109057 · as of July 4, 2026
- Active · clearThermal Edge Heating And AirAnaheim, CA · CSLB #1124788 · as of July 4, 2026
- Active · clearThermal Efficiency Control INCSherwood Forest, CA · CSLB #1082879 · as of July 4, 2026
- Active · clearThermal ExchangeCathedral City, CA · CSLB #569013 · as of July 4, 2026
- Active · clearThermal Services INCLake Elsinore, CA · CSLB #1011907 · as of July 4, 2026
- Active · clearThermal Tech Heating & AirPasadena, CA · CSLB #1142549 · as of July 4, 2026
- Active · clearThermal TechnicGlendale, CA · CSLB #673256 · as of July 4, 2026
- Active · clearTherma-pro Mechanical Services INCSan Bernardino, CA · CSLB #1051946 · as of July 4, 2026
- Active · clearTherma Tech INCSan Jose, CA · CSLB #913806 · as of July 4, 2026
- Active · clearThermaxx MechanicalStockton, CA · CSLB #802624 · as of July 4, 2026
- Active · clearThermo Cooling INCGlendale, CA · CSLB #1135530 · as of July 4, 2026
- Active · clearThermodynamix INCSacramento, CA · CSLB #1079445 · as of July 4, 2026
- Active · clearThermo H V A C RefrigerationConcord, CA · CSLB #1024929 · as of July 4, 2026
- Active · clearThermokeenMoreno Valley, CA · CSLB #1133760 · as of July 4, 2026
- Active · clearThermo Pro INCGranite Bay, CA · CSLB #1049458 · as of July 4, 2026
- Active · clearThermotech Solutions INCCarmichael, CA · CSLB #1108591 · as of July 4, 2026
- Active · clearThermo Temp Services INCLos Angeles, CA · CSLB #991781 · as of July 4, 2026
- Active · clearThermsolHacienda Heights, CA · CSLB #1033123 · as of July 4, 2026
- Active · clearThermus Mechanical INCCitrus Heights, CA · CSLB #855913 · as of July 4, 2026
- Active · clearThe Saran Investments INCMorgan Hill, CA · CSLB #1056870 · as of July 4, 2026
- Active · clearThe Way MechanicalSan Lorenzo, CA · CSLB #1152130 · as of July 4, 2026
- Active · clearThe Weather Tech INCMission Hills, CA · CSLB #1060080 · as of July 4, 2026
- Active · clearThink Blue MechanicalHighgrove, CA · CSLB #982696 · as of July 4, 2026
- Active · clearThird Generation Heating & Air ConditioningTemecula, CA · CSLB #969231 · as of July 4, 2026
- Active · clearThomas Ac Heating TechnologyAnaheim, CA · CSLB #1020930 · as of July 4, 2026
- Active · clearThomas And Sons Heating And Air ConditioningOrangevale, CA · CSLB #804930 · as of July 4, 2026
- Active · clearE Thomas H V A CSanta Ana, CA · CSLB #893552 · as of July 4, 2026
- Active · clearThomas Heating & AirSan Pedro, CA · CSLB #1043711 · as of July 4, 2026
- Active · clearThomas Sheet Metal INCTemecula, CA · CSLB #1016562 · as of July 4, 2026
- Active · clearThomas & Thomas Heating & AirNorth Highlands, CA · CSLB #1013269 · as of July 4, 2026
- Active · clearThompson Plumbing Heating And Air ConditioningOceanside, CA · CSLB #974400 · as of July 4, 2026
- Active · clearThompson's Heating & Air INCWoodland, CA · CSLB #884512 · as of July 4, 2026
- Active · clearThompson Total Temp CorpCastaic, CA · CSLB #1124649 · as of July 4, 2026
- Active · clearThomson Air Conditioning & HeatingHuntington Beach, CA · CSLB #959811 · as of July 4, 2026
- Active · clearThornton's Gas ServiceNicolaus, CA · CSLB #922761 · as of July 4, 2026
- Active · clearThorough Ac LLC DBA Thorough AcSan Diego, CA · CSLB #1058517 · as of July 4, 2026
- Active · clearBill Thorpe Heating And Air ConditioningEl Cajon, CA · CSLB #721327 · as of July 4, 2026
- Active · clearThose Guys Heating & Air LLCVictorville, CA · CSLB #1140848 · as of July 4, 2026
- Active · clearThrifty Heating And Air ConditionLos Angeles, CA · CSLB #751679 · as of July 4, 2026
- Active · clearThurlow's Heating & Air Conditioning INCVictorville, CA · CSLB #551695 · as of July 4, 2026
- Active · clearTidal Mechanical LLCSeal Beach, CA · CSLB #1111188 · as of July 4, 2026
- Active · clearTier 1 Air Conditioning INCCorona, CA · CSLB #1030742 · as of July 4, 2026
- Active · clearTiger A/cLittlerock, CA · CSLB #1103993 · as of July 4, 2026
- Active · clearTilli's Heating And AirElk Grove, CA · CSLB #1120638 · as of July 4, 2026
- Active · clearTillson MechanicalRamona, CA · CSLB #1076514 · as of July 4, 2026
- Active · clearHigh Efficiency Solutions INC DBA Timberline Heating & Air ConditRedding, CA · CSLB #525939 · as of July 4, 2026
- Active · clearTimely Comfort LLCStockton, CA · CSLB #1113848 · as of July 4, 2026
- Active · clearTiming HVAC CompanySan Leandro, CA · CSLB #1108462 · as of July 4, 2026
- Active · clearTimo's Air Conditioning & Heating INCThousand Palms, CA · CSLB #920062 · as of July 4, 2026
Data sourced from the California Contractors State License Board (CSLB), current as of July 4, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.