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 6,961–7,020 of 8,930 contractors

Ross Air Conditioning INC
Riverside, CA · CSLB #949880 · as of July 3, 2026
Active · clear
Ross HVAC Service
Rohnert Park, CA · CSLB #1149641 · as of July 3, 2026
Active · clear
Alfred Rostomyan
Glendale, CA · CSLB #1095629 · as of July 3, 2026
Active · clear
Roterts Appl Repair
Stockton, CA · CSLB #542874 · as of July 3, 2026
Active · clear
Round Tuit Heating And Air
Granite Bay, CA · CSLB #1117850 · as of July 3, 2026
Active · clear
Rowland Air INC
Sylmar, CA · CSLB #920387 · as of July 3, 2026
Active · clear
Rowley Heating And Air
Alta, CA · CSLB #1045982 · as of July 3, 2026
Active · clear
Royal Breeze INC
Sacramento, CA · CSLB #856850 · as of July 3, 2026
Active · clear
Royal California Air
Bakersfield, CA · CSLB #1090668 · as of July 3, 2026
Active · clear
Royal Comfort A/c & Heating
Riverside, CA · CSLB #882862 · as of July 3, 2026
Active · clear
Royale Air Heating And Air Conditioning
Brentwood, CA · CSLB #1025922 · as of July 3, 2026
Active · clear
Royal Flush Air Conditioning
Fillmore, CA · CSLB #1127846 · as of July 3, 2026
Active · clear
Royal Heating And Air
Los Angeles, CA · CSLB #1157356 · as of July 3, 2026
Active · clear
Royalty Heating & Air INC
Roseville, CA · CSLB #1112463 · as of July 3, 2026
Active · clear
Royalty Heating And Air Conditioning
Murrieta, CA · CSLB #1109929 · as of July 3, 2026
Active · clear
Roy Mechanical Services Incorporated
Sebastopol, CA · CSLB #876217 · as of July 3, 2026
Active · clear
RPH & H Enterprises INC
Redding, CA · CSLB #682248 · as of July 3, 2026
Active · clear
RPM Heating & Air
El Cajon, CA · CSLB #1078785 · as of July 3, 2026
Active · clear
RPM Socal LLC
Trabuco Canyon, CA · CSLB #1091110 · as of July 3, 2026
Active · clear
R Powell Mechanical
Oakland, CA · CSLB #1139432 · as of July 3, 2026
Active · clear
R & R Air Conditioning
Clovis, CA · CSLB #951590 · as of July 3, 2026
Active · clear
R & R Enterprise
Newcastle, CA · CSLB #690090 · as of July 3, 2026
Active · clear
RR Heating & Air Conditioning
Santee, CA · CSLB #811845 · as of July 3, 2026
Active · clear
R&R Heating & Air Conditioning INC
Redding, CA · CSLB #1000768 · as of July 3, 2026
Active · clear
R R Heating And Air Conditioning
Castaic, CA · CSLB #923053 · as of July 3, 2026
Active · clear
R & R Heating And Air INC
Van Nuys, CA · CSLB #1047306 · as of July 3, 2026
Active · clear
RR HVAC INC
San Diego, CA · CSLB #1020173 · as of July 3, 2026
Active · clear
RR HVAC Services
Arcadia, CA · CSLB #1149872 · as of July 3, 2026
Active · clear
R & R Mechanical
Stockton, CA · CSLB #996195 · as of July 3, 2026
Active · clear
RS Air Conditioning & Heating
Glendora, CA · CSLB #966380 · as of July 3, 2026
Active · clear
R Santerelli HVAC
Shingle Springs, CA · CSLB #1150484 · as of July 3, 2026
Active · clear
R S C Mechanical INC
Clinton Township, CA · CSLB #1050870 · as of July 3, 2026
Active · clear
R S G
Moreno Valley, CA · CSLB #1027717 · as of July 3, 2026
Active · clear
R S Heating And Cooling
Clovis, CA · CSLB #1020375 · as of July 3, 2026
Active · clear
R & S Heating And Sheet Metal INC
Monterey, CA · CSLB #770707 · as of July 3, 2026
Active · clear
Rsi HVAC LLC
San Diego, CA · CSLB #1153760 · as of July 3, 2026
Active · clear
RS Mechanical Heating & Air INC
Modesto, CA · CSLB #1039812 · as of July 3, 2026
Active · clear
RSM Mechanical
Riverside, CA · CSLB #987306 · as of July 3, 2026
Active · clear
RSM Mechanical
San Diego, CA · CSLB #1129352 · as of July 3, 2026
Active · clear
RTC Heating And Air Conditioning
Riverside, CA · CSLB #1095272 · as of July 3, 2026
Active · clear
R T D Mechanical
Belmont, CA · CSLB #979427 · as of July 3, 2026
Active · clear
RT Enterprises INC
San Bernardino, CA · CSLB #663020 · as of July 3, 2026
Active · clear
R T Heating & Cooling
Fowler, CA · CSLB #1102173 · as of July 3, 2026
Active · clear
RT Olson Plumbing, Heating And Air Conditioning LLC
Corona, CA · CSLB #997337 · as of July 3, 2026
Active · clear
Ruane Heating & Air Conditioning CO
Lancaster, CA · CSLB #584115 · as of July 3, 2026
Active · clear
Ruane Mechanical INC
Lancaster, CA · CSLB #1029879 · as of July 3, 2026
Active · clear
Ruben Heating & Air Conditioning INC
Canyon Country, CA · CSLB #1146255 · as of July 3, 2026
Active · clear
Ruben's Air Conditioning Heating & Ventilation Services
Glendale, CA · CSLB #737808 · as of July 3, 2026
Active · clear
Rudy's Air Conditioning And Heating INC
Bakersfield, CA · CSLB #725031 · as of July 3, 2026
Active · clear
Ruiz Air
Stockton, CA · CSLB #1112571 · as of July 3, 2026
Active · clear
Ruiz Heating And Air Conditioning
Escondido, CA · CSLB #851070 · as of July 3, 2026
Active · clear
Running Springs Heating & Air
Lakeport, CA · CSLB #706322 · as of July 3, 2026
Active · clear
Rush Air Mechanical
San Mateo, CA · CSLB #1010774 · as of July 3, 2026
Active · clear
Rush Mechanical
Sacramento, CA · CSLB #441882 · as of July 3, 2026
Active · clear
Ruslan Gazizov
San Jose, CA · CSLB #1154007 · as of July 3, 2026
Active · clear
Russell Air Conditioning INC
Desert Hot Springs, CA · CSLB #960094 · as of July 3, 2026
Active · clear
Russell Heating & Air Conditioning INC
Tracy, CA · CSLB #983173 · as of July 3, 2026
Active · clear
Russell's Heating & Air Conditioning
Yucaipa, CA · CSLB #719570 · as of July 3, 2026
Active · clear
Russo's Heating & Air Conditioning Company
Stockton, CA · CSLB #747167 · as of July 3, 2026
Active · clear
Rusth Heating & Air
Manhattan Beach, CA · CSLB #699281 · 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.