HVAC contractors licensed in California

Every active California license that lists hvac work, sorted by name.

• Olson Air
  HVAC · Apple Valley · #1126350
  Active Insurance current
• Olson Superior Plumbing INC
  Plumbing, HVAC · Lake Forest · #1045399
  Active No insurance on file
• Olsson Plumbing Company
  Plumbing, HVAC · Danville · #443706
  Active Insurance current
• Olvera Air Conditioning INC
  HVAC · Calexico · #1012518
  Active Insurance current
• Olympic Air Tech
  HVAC · Cerritos · #1014679
  Active Insurance current
• Olympic Heating and Air
  HVAC · Oakland · #918993
  Active Insurance current
• Om Heating & Air Conditioning INC
  HVAC · Berkeley · #919475
  Active Insurance current
• Oma Heating & Cooling
  HVAC · Los Banos · #1148934
  Active Insurance current
• Omak Construction INC
  General Contractors, HVAC · North Highlands · #940474
  Active Insurance current
• Omega Air
  HVAC · San Diego · #1149953
  Active Insurance current
• Omega Air and Heating INC
  HVAC · Clovis · #1057445
  Active Insurance expired
• Omega Appliance Heating & Air Conditioning
  HVAC · Tarzana · #855328
  Active Insurance current
• Omega Cooling & Heating
  HVAC · Temecula · #1091292
  Active Insurance current
• Omega Heater & Air
  HVAC · Stockton · #1161164
  Active Insurance current
• Omega Heating and Air
  HVAC · Hemet · #1051241
  Active Insurance current
• Omelchenko Dmytro
  Electrical, Plumbing · Bakersfield · #1133965
  Active Insurance current
• Omid Heating & Air Conditioning
  HVAC · Penn Valley · #1127721
  Active Insurance expired
• Omid Marouf
  HVAC · Sacramento · #1141181
  Active Insurance current
• Omni Air HVAC LLC
  HVAC · Orange · #1071374
  Active Insurance current
• Omni Heating and Air INC
  HVAC · Wildomar · #1050193
  Active Insurance current
• Omni Mechanical Solutions
  General Contractors, HVAC · Livermore · #1028951
  Active Insurance current
• Omni-Temp Refrigeration
  HVAC · Vernon · #471945
  Active Insurance current
• Omnigrade Tradeworks INC
  HVAC · Chatsworth · #1033422
  Active Insurance current
• Omnisense HVAC
  General Contractors, HVAC · Huntington Beach · #1141036
  Active Insurance current
• Omts Heating and Cooling
  HVAC · Canyon Lake · #1144745
  Active Insurance current
• On Call Air Conditioning and Heating Repair for Less
  HVAC · Bakersfield · #938060
  Active Insurance current
• On Call Heating and Cooling
  HVAC · Glendale · #996251
  Active Insurance current
• On Call Refrigeration INC
  HVAC · Yuma · #870610
  Active No insurance on file
• On Line Heating & Air Conditioning
  HVAC · Citrus Heights · #690591
  Active Insurance current
• On N Off Electric INC
  General Contractors, Electrical · Sunnyvale · #1113144
  Active Insurance current
• On Point Heating and Air Conditioning
  HVAC · El Cajon · #1061789
  Active Insurance current
• On Point Plumbing Heating & Air Conditioning INC
  General Contractors, Plumbing · Paso Robles · #1091730
  Active Insurance current
• On Target Heating & Cooling INC
  HVAC · National City · #1020436
  Active Insurance current
• On the Way HVAC & Home Solutions LLC
  HVAC, Windows & Glass · Victorville · #1129019
  Active Insurance expired
• On Time Home Services
  Plumbing, HVAC · Temecula · #857180
  Active Insurance current
• Ondaine Enterprises
  General Contractors, Electrical · Chatsworth · #750898
  Active Insurance current
• One Day Installation & Repairs INC
  General Contractors, Electrical · San Juan Bautista · #890565
  Active Insurance current
• One Hour Heating & Air Conditioning
  HVAC · San Diego · #1107267
  Active Insurance current
• One Hour Heating & Air Conditioning
  HVAC · Vallejo · #1151576
  Active Insurance current
• One Hour Heating & Air Conditioning
  HVAC · San Ramon · #1160719
  Active Insurance current
• One Hour Heating & Air Conditioning of Elk Grove
  HVAC · Elk Grove · #1143074
  Active Insurance current
• One Hour Heating and Air Conditioning
  HVAC · Fullerton · #1136570
  Active Insurance current
• One Hour Heating and Air Conditioning
  HVAC · Orange · #1139941
  Active Insurance current
• One Hour Heating and Air Conditioning
  HVAC · Mission Viejo · #1140696
  Active Insurance current
• One Hour Heating and Air Conditioning
  HVAC · Temecula · #1159348
  Active Insurance current
• One Hour Heating and Air Conditioning of Pleasant Hill
  HVAC · Pleasant Hill · #1138012
  Active Insurance current
• One Legacy Heating & Air Conditioning
  General Contractors, HVAC · Moreno Valley · #1037238
  Active Insurance current
• One Season Heating and Air Conditioning
  HVAC · Irvine · #1038022
  Active Insurance current
• One Source Engineering INC
  HVAC · Redwood City · #755696
  Active Insurance current
• One Stop Comfort Center INC
  General Contractors, Electrical · San Diego · #1087331
  Active Insurance current
• One Stop H V a C
  HVAC · Simi Valley · #980203
  Active Insurance expiring soon
• One Stop Heating and Air
  HVAC · Corona · #930287
  Active Insurance current
• One Stop Heating and Air Conditioning
  HVAC · Cathedral City · #1124292
  Active Insurance current
• One Stop Heating and Cooling INC
  HVAC · Cerritos · #1099916
  Active Insurance current
• One Stop Refrigeration INC
  HVAC · Los Angeles · #937246
  Active Insurance expiring soon
• One Way Heating & Air Conditioning
  HVAC · Torrance · #517230
  Active Insurance current
• One-Stop Commerical Refrigeration
  HVAC · Chula Vista · #1143871
  Active Insurance current
• One-Stop Heating & Cooling INC
  HVAC · Canyon Country · #1159265
  Active Insurance current
• One2's H V a C
  HVAC · Northridge · #986912
  Active Insurance current
• Only the Best Heating and Air Conditioning
  HVAC · Arcadia · #875777
  Active Insurance current
• Onshore Mechanical
  Electrical, HVAC · Huntington Beach · #1078449
  Active Insurance current
• Ontario Refrigeration Commercial Air Conditioning Heating & Contr
  HVAC · Ontario · #315638
  Active Insurance current
• Ontime Air Service INC
  HVAC · Alhambra · #1158279
  Active Insurance current
• Onyx Heating and Air
  HVAC · Victorville · #1014949
  Active Insurance current
• Onzone Heating & Cooling INC
  HVAC · Pleasanton · #1154419
  Active Insurance current
• Opposite Weather Heating & Air Conditioing
  HVAC · Norwalk · #840683
  Active Insurance current
• Optemo Hydronics
  HVAC · Santa Rosa · #788924
  Active No insurance on file
• Optimal Air Heating & Air Conditioning
  HVAC · Murrieta · #994861
  Active Insurance current
• Optimal Heating & Air INC
  HVAC · Bakersfield · #1063164
  Active Insurance current
• Optimal Heating and Cooling
  HVAC · Bakersfield · #1094205
  Active Insurance current
• Optimized Plumbing & Piping INC
  Plumbing, HVAC · Sonora · #982621
  Active Insurance current
• Optimum Aire
  HVAC · San Diego · #936940
  Active Insurance current
• Optimum Heating and Air Conditioning
  HVAC · Glendora · #856737
  Active Insurance current
• Optimum HVAC
  HVAC · Tustin · #1074548
  Active Insurance current
• Optimus HVAC & Plumbing INC
  Plumbing, HVAC · Castaic · #1055837
  Active Insurance current
• Opus Fidelis
  General Contractors, Electrical · Carlsbad · #1151477
  Active Insurance current
• Or - 5 General Contractor Corp
  General Contractors, HVAC · Woodland Hills · #861315
  Active Insurance current
• Orange Coast Plumbing
  General Contractors, Plumbing · Santa Ana · #596002
  Active Insurance current
• Orange County Air Services
  HVAC · Rancho Cucamonga · #929240
  Active Insurance current
• Orange County Cooling Systems
  HVAC · La Habra · #1155328
  Active Insurance current
• Orange County Plumbing Heating Air Conditioning CO INC
  Plumbing, HVAC · Tustin · #993990
  Active Insurance current
• Orbit Air Conditioning
  HVAC · Winnetka · #1150689
  Active Insurance current
• Orebend Bldrs INC
  General Contractors, Plumbing · San Francisco · #1017529
  Active Insurance current
• Oregon S & S Sheetmetal INC
  HVAC · White City · #682160
  Active Insurance current
• Oren Shabo DBA Sahara Heating & Air
  HVAC · Woodland Hills · #1055819
  Active Insurance current
• Organ & Sons Mechanical INC
  Electrical, Plumbing · Santa Maria · #997854
  Active Insurance current
• Organik Air
  HVAC · Temecula · #1071359
  Active Insurance current
• Orgio Air Services
  HVAC · Fullerton · #1153303
  Active Insurance current
• Origin Heating & Air INC
  HVAC · Tehachapi · #1136867
  Active Insurance current
• Origin Mechanical & HVAC INC
  HVAC · Pleasant Hill · #1118842
  Active Insurance current
• Origin Solar USA INC
  Roofing, General Contractors · Roseville · #1094790
  Active Insurance current
• Orion HVAC
  General Contractors, Electrical · Van Nuys · #1079927
  Active Insurance current
• Ornelas Heating & Air Conditioning
  HVAC · San Jose · #808460
  Active Insurance current
• Orosco Heating & Air Conditioning LLC
  HVAC · Citrus Heights · #1023814
  Active Insurance current
• Orozco's Air Conditioning & Heating INC
  HVAC · Riverside · #1146121
  Active Insurance expiring soon
• Orr Construction Company
  General Contractors, HVAC · Signal Hill · #1028720
  Active Insurance expiring soon
• Orravan Mechanical INC
  HVAC · Lakewood · #1025455
  Active No insurance on file
• Ortega Heating & Air
  HVAC · Fallbrook · #1134767
  Active Insurance current
• Ortiz Heating & Air Conditioning INC
  HVAC · Burlingame · #803346
  Active Insurance current
• Os Mep INC
  Electrical, Plumbing · Woodinville · #1124851
  Active Insurance expiring soon

Last checked against state records on Oct 10, 2026. How we get this data.