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 3, 2026.

Showing 6,721–6,780 of 8,930 contractors

Redwire HVAC INC
Burlingame, CA · CSLB #1106003 · as of July 3, 2026
Active · clear
Redwood Empire Mechanical INC
Santa Rosa, CA · CSLB #917040 · as of July 3, 2026
Active · clear
Redwood Mechanical
Eureka, CA · CSLB #1032157 · as of July 3, 2026
Active · clear
Reed's Heating
Paso Robles, CA · CSLB #945895 · as of July 3, 2026
Active · clear
Ming Choo DBA Reel Climate Solutions
Riverside, CA · CSLB #967082 · as of July 3, 2026
Active · clear
R E E Mechanical INC
Temecula, CA · CSLB #940700 · as of July 3, 2026
Active · clear
Reese Mechanical INC
Murrieta, CA · CSLB #858250 · as of July 3, 2026
Active · clear
Refer Mechanics Refrigeration
Apple Valley, CA · CSLB #1143433 · as of July 3, 2026
Active · clear
Refresh Duct & Chimney Cleaning
Orange, CA · CSLB #1070281 · as of July 3, 2026
Active · clear
Danny B Meinecke DBA Refreshed Heating & Cooling
Concord, CA · CSLB #697406 · as of July 3, 2026
Active · clear
Refresh Heating And Cooling LLC
Citrus Heights, CA · CSLB #1140241 · as of July 3, 2026
Active · clear
Refrigeration Contracting & Maintenance INC
City Of Commerce, CA · CSLB #427705 · as of July 3, 2026
Active · clear
The Refrigeration Mechanic INC
Piru, CA · CSLB #952602 · as of July 3, 2026
Active · clear
Refrigeration Supplies Distributor
Lake Forest, CA · CSLB #888867 · as of July 3, 2026
Active · clear
Refrigeration Unlimited INC
Fullerton, CA · CSLB #764462 · as of July 3, 2026
Active · clear
Regan's Heating And Air Conditioning
Paso Robles, CA · CSLB #1004418 · as of July 3, 2026
Active · clear
Regency Hood Services INC
Van Nuys, CA · CSLB #1100945 · as of July 3, 2026
Active · clear
Regency Mechanical INC
North Highlands, CA · CSLB #787255 · as of July 3, 2026
Active · clear
Re HVAC Services
Rancho Cucamonga, CA · CSLB #1088141 · as of July 3, 2026
Active · clear
Reid Sheet Metal Services INC
American Canyon, CA · CSLB #754692 · as of July 3, 2026
Active · clear
Reindeer Ac And Refrigeration Company
Porter Ranch, CA · CSLB #857597 · as of July 3, 2026
Active · clear
Reitz Heating & Air INC
Ramona, CA · CSLB #1055356 · as of July 3, 2026
Active · clear
Relaxed Heating And Air INC
Canoga Park, CA · CSLB #917357 · as of July 3, 2026
Active · clear
Reliable Air
Sacramento, CA · CSLB #1086614 · as of July 3, 2026
Active · clear
Reliable Air Conditioning & Heating
California City, CA · CSLB #534513 · as of July 3, 2026
Active · clear
Reliable Air Mechanical
San Jose, CA · CSLB #954400 · as of July 3, 2026
Active · clear
Reliable Appliance Service INC
El Cajon, CA · CSLB #962632 · as of July 3, 2026
Active · clear
Reliable Appliances Heating And Air
Norco, CA · CSLB #925496 · as of July 3, 2026
Active · clear
Reliable Cooling & Heating
Sacramento, CA · CSLB #1130799 · as of July 3, 2026
Active · clear
Reliable Heating & Air Conditioning
San Jose, CA · CSLB #1052882 · as of July 3, 2026
Active · clear
Reliable Heating And Air
West Hills, CA · CSLB #1135270 · as of July 3, 2026
Active · clear
Reliable Heating And Air Conditioning
Ojai, CA · CSLB #476393 · as of July 3, 2026
Active · clear
Reliable HVAC
Menifee, CA · CSLB #1157265 · as of July 3, 2026
Active · clear
Reliable H V A C INC
Solvang, CA · CSLB #1043322 · as of July 3, 2026
Active · clear
Reliable Plumbing & Heating Services
Monterey, CA · CSLB #531809 · as of July 3, 2026
Active · clear
Reliable Refrigeration
Napa, CA · CSLB #467256 · as of July 3, 2026
Active · clear
Gard INC DBA Reliable Sheet Metal Works
Fullerton, CA · CSLB #272202 · as of July 3, 2026
Active · clear
Reliable Standard Group LLC
San Diego, CA · CSLB #1103370 · as of July 3, 2026
Active · clear
Reliable Temperature Control
Pomona, CA · CSLB #1089966 · as of July 3, 2026
Active · clear
Reliance Heating & Air Corporation
Sacramento, CA · CSLB #1046472 · as of July 3, 2026
Active · clear
Reliance Mechanical
South Gate, CA · CSLB #1059007 · as of July 3, 2026
Active · clear
Reliant Cooling And Power LLC
Ontario, CA · CSLB #1156506 · as of July 3, 2026
Active · clear
Reliant HVAC Service LLC
Rancho Cucamonga, CA · CSLB #1128801 · as of July 3, 2026
Active · clear
Rely HVAC LLC
Van Nuys, CA · CSLB #1145256 · as of July 3, 2026
Active · clear
Rendon Heating & Air INC
Vacaville, CA · CSLB #1047288 · as of July 3, 2026
Active · clear
Rene's Plumbing Repair INC
La Verne, CA · CSLB #454443 · as of July 3, 2026
Active · clear
Renkow Mechanical INC
Los Angeles, CA · CSLB #773622 · as of July 3, 2026
Active · clear
Renkow Service CO
Gardena, CA · CSLB #741409 · as of July 3, 2026
Active · clear
Renner Heating & Air Conditioning INC
Vacaville, CA · CSLB #1005466 · as of July 3, 2026
Active · clear
Renstrom Plumbing & Heating INC
San Francisco, CA · CSLB #556995 · as of July 3, 2026
Active · clear
Repair First Air Conditioning
Indio, CA · CSLB #1090204 · as of July 3, 2026
Active · clear
R / E Plumbing And Heating INC
Sylmar, CA · CSLB #607487 · as of July 3, 2026
Active · clear
Republic Air Conditioning Company
Newman, CA · CSLB #481432 · as of July 3, 2026
Active · clear
Republic Heating & Air LLC
North Highlands, CA · CSLB #1135507 · as of July 3, 2026
Active · clear
Rescomm Heating & Ac INC
Tracy, CA · CSLB #674796 · as of July 3, 2026
Active · clear
Rescue Air Service INC
San Jose, CA · CSLB #826201 · as of July 3, 2026
Active · clear
Reset Control
Moreno Valley, CA · CSLB #1067241 · as of July 3, 2026
Active · clear
Resilience Air
San Jose, CA · CSLB #1152287 · as of July 3, 2026
Active · clear
Resilience Heating & Air
Los Banos, CA · CSLB #1144572 · as of July 3, 2026
Active · clear
Resq HVAC Residential Quality HVAC
Cypress, CA · CSLB #1123005 · as of July 3, 2026
Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of July 3, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.