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

The Plumbing Doctor
Escondido, CA · CSLB #749053 · as of July 4, 2026
Active · clear
The Real Heating And Cooling
Mission Hills, CA · CSLB #1068327 · as of July 4, 2026
Active · clear
The Refrigeration CO
Hesperia, CA · CSLB #925985 · as of July 4, 2026
Active · clear
Thermal Air Conditioning INC
Pasadena, CA · CSLB #845095 · as of July 4, 2026
Active · clear
Thermal Alliance
Mariposa, CA · CSLB #719460 · as of July 4, 2026
Active · clear
Thermal Comfort Systems INC
Northridge, CA · CSLB #440532 · as of July 4, 2026
Active · clear
Thermal Concepts INC
Chino, CA · CSLB #912887 · as of July 4, 2026
Active · clear
Thermal Control
Tooele, CA · CSLB #671689 · as of July 4, 2026
Active · clear
Thermal Control INC DBA Thermal Control HTG & A/c INC
Riverside, CA · CSLB #722928 · as of July 4, 2026
Active · clear
Thermal-cool INC
Riverside, CA · CSLB #719787 · as of July 4, 2026
Active · clear
Thermal Dynamics
Verdi, CA · CSLB #1135608 · as of July 4, 2026
Active · clear
Thermal Eagle HVAC
Winchester, CA · CSLB #1109057 · as of July 4, 2026
Active · clear
Thermal Edge Heating And Air
Anaheim, CA · CSLB #1124788 · as of July 4, 2026
Active · clear
Thermal Efficiency Control INC
Sherwood Forest, CA · CSLB #1082879 · as of July 4, 2026
Active · clear
Thermal Exchange
Cathedral City, CA · CSLB #569013 · as of July 4, 2026
Active · clear
Thermal Services INC
Lake Elsinore, CA · CSLB #1011907 · as of July 4, 2026
Active · clear
Thermal Tech Heating & Air
Pasadena, CA · CSLB #1142549 · as of July 4, 2026
Active · clear
Thermal Technic
Glendale, CA · CSLB #673256 · as of July 4, 2026
Active · clear
Therma-pro Mechanical Services INC
San Bernardino, CA · CSLB #1051946 · as of July 4, 2026
Active · clear
Therma Tech INC
San Jose, CA · CSLB #913806 · as of July 4, 2026
Active · clear
Thermaxx Mechanical
Stockton, CA · CSLB #802624 · as of July 4, 2026
Active · clear
Thermo Cooling INC
Glendale, CA · CSLB #1135530 · as of July 4, 2026
Active · clear
Thermodynamix INC
Sacramento, CA · CSLB #1079445 · as of July 4, 2026
Active · clear
Thermo H V A C Refrigeration
Concord, CA · CSLB #1024929 · as of July 4, 2026
Active · clear
Thermokeen
Moreno Valley, CA · CSLB #1133760 · as of July 4, 2026
Active · clear
Thermo Pro INC
Granite Bay, CA · CSLB #1049458 · as of July 4, 2026
Active · clear
Thermotech Solutions INC
Carmichael, CA · CSLB #1108591 · as of July 4, 2026
Active · clear
Thermo Temp Services INC
Los Angeles, CA · CSLB #991781 · as of July 4, 2026
Active · clear
Thermsol
Hacienda Heights, CA · CSLB #1033123 · as of July 4, 2026
Active · clear
Thermus Mechanical INC
Citrus Heights, CA · CSLB #855913 · as of July 4, 2026
Active · clear
The Saran Investments INC
Morgan Hill, CA · CSLB #1056870 · as of July 4, 2026
Active · clear
The Way Mechanical
San Lorenzo, CA · CSLB #1152130 · as of July 4, 2026
Active · clear
The Weather Tech INC
Mission Hills, CA · CSLB #1060080 · as of July 4, 2026
Active · clear
Think Blue Mechanical
Highgrove, CA · CSLB #982696 · as of July 4, 2026
Active · clear
Third Generation Heating & Air Conditioning
Temecula, CA · CSLB #969231 · as of July 4, 2026
Active · clear
Thomas Ac Heating Technology
Anaheim, CA · CSLB #1020930 · as of July 4, 2026
Active · clear
Thomas And Sons Heating And Air Conditioning
Orangevale, CA · CSLB #804930 · as of July 4, 2026
Active · clear
E Thomas H V A C
Santa Ana, CA · CSLB #893552 · as of July 4, 2026
Active · clear
Thomas Heating & Air
San Pedro, CA · CSLB #1043711 · as of July 4, 2026
Active · clear
Thomas Sheet Metal INC
Temecula, CA · CSLB #1016562 · as of July 4, 2026
Active · clear
Thomas & Thomas Heating & Air
North Highlands, CA · CSLB #1013269 · as of July 4, 2026
Active · clear
Thompson Plumbing Heating And Air Conditioning
Oceanside, CA · CSLB #974400 · as of July 4, 2026
Active · clear
Thompson's Heating & Air INC
Woodland, CA · CSLB #884512 · as of July 4, 2026
Active · clear
Thompson Total Temp Corp
Castaic, CA · CSLB #1124649 · as of July 4, 2026
Active · clear
Thomson Air Conditioning & Heating
Huntington Beach, CA · CSLB #959811 · as of July 4, 2026
Active · clear
Thornton's Gas Service
Nicolaus, CA · CSLB #922761 · as of July 4, 2026
Active · clear
Thorough Ac LLC DBA Thorough Ac
San Diego, CA · CSLB #1058517 · as of July 4, 2026
Active · clear
Bill Thorpe Heating And Air Conditioning
El Cajon, CA · CSLB #721327 · as of July 4, 2026
Active · clear
Those Guys Heating & Air LLC
Victorville, CA · CSLB #1140848 · as of July 4, 2026
Active · clear
Thrifty Heating And Air Condition
Los Angeles, CA · CSLB #751679 · as of July 4, 2026
Active · clear
Thurlow's Heating & Air Conditioning INC
Victorville, CA · CSLB #551695 · as of July 4, 2026
Active · clear
Tidal Mechanical LLC
Seal Beach, CA · CSLB #1111188 · as of July 4, 2026
Active · clear
Tier 1 Air Conditioning INC
Corona, CA · CSLB #1030742 · as of July 4, 2026
Active · clear
Tiger A/c
Littlerock, CA · CSLB #1103993 · as of July 4, 2026
Active · clear
Tilli's Heating And Air
Elk Grove, CA · CSLB #1120638 · as of July 4, 2026
Active · clear
Tillson Mechanical
Ramona, CA · CSLB #1076514 · as of July 4, 2026
Active · clear
High Efficiency Solutions INC DBA Timberline Heating & Air Condit
Redding, CA · CSLB #525939 · as of July 4, 2026
Active · clear
Timely Comfort LLC
Stockton, CA · CSLB #1113848 · as of July 4, 2026
Active · clear
Timing HVAC Company
San Leandro, CA · CSLB #1108462 · as of July 4, 2026
Active · clear
Timo's Air Conditioning & Heating INC
Thousand Palms, CA · CSLB #920062 · as of July 4, 2026
Active · clear

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.