Licensed Heating & Air Conditioning (C-20) contractors in California

The California Contractors State License Board (CSLB) lists 8,936 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 October 8, 2026.

Showing 2,941–3,000 of 8,936 contractors

Desert Valley Air Heating And Air Conditioning
Desert Hot Springs, CA · CSLB #1043800 · as of October 8, 2026
Active · clear
Desert Xtreme Heating And Air Conditioning
Coachella, CA · CSLB #958886 · as of October 8, 2026
Active · clear
Design Air
Soquel, CA · CSLB #665899 · as of October 8, 2026
Active · clear
Design Air Heating And Air Conditioning
Morro Bay, CA · CSLB #1011726 · as of October 8, 2026
Active · clear
Design Air Mechanical INC
Soquel, CA · CSLB #1112847 · as of October 8, 2026
Active · clear
The Design Builder Heating And Air
El Monte, CA · CSLB #1111694 · as of October 8, 2026
Active · clear
Designer Plumbing & Air INC
Bellflower, CA · CSLB #950508 · as of October 8, 2026
Active · clear
Design Heating & Air Conditioning INC
San Jose, CA · CSLB #948420 · as of October 8, 2026
Active · clear
Details Matter HVAC
Van Nuys, CA · CSLB #1153013 · as of October 8, 2026
Active · clear
Deus Ex Mechanical
Santa Rosa, CA · CSLB #1114457 · as of October 8, 2026
Active · clear
Devco Mechanical INC
Roseville, CA · CSLB #505507 · as of October 8, 2026
Active · clear
De Vera Air Conditioning Company
Los Angeles, CA · CSLB #419220 · as of October 8, 2026
Active · clear
Devil Mountain Mechanical Services
Concord, CA · CSLB #894957 · as of October 8, 2026
Active · clear
Dewildt Environmental INC
Oceanside, CA · CSLB #749748 · as of October 8, 2026
Active · clear
Dewpoint Heating & Air Conditioning
Burbank, CA · CSLB #969836 · as of October 8, 2026
Active · clear
Dew Point Heating And Air Conditioning
El Cajon, CA · CSLB #1133826 · as of October 8, 2026
Active · clear
Dez Mechanical Systems
West Covina, CA · CSLB #952037 · as of October 8, 2026
Active · clear
DGF Heating & Air Conditioning
Santa Ana, CA · CSLB #1118171 · as of October 8, 2026
Active · clear
DGL Air Conditioning & Heating INC
Orange, CA · CSLB #622345 · as of October 8, 2026
Active · clear
D H Air And Heating
Chino Hills, CA · CSLB #734206 · as of October 8, 2026
Active · clear
Dha Mechanical INC
Brentwood, CA · CSLB #1086837 · as of October 8, 2026
Active · clear
D H I Heating & Air
Chula Vista, CA · CSLB #1014927 · as of October 8, 2026
Active · clear
D H Mechanical
Castaic, CA · CSLB #887902 · as of October 8, 2026
Active · clear
D & H Refrigeration INC
Roseville, CA · CSLB #1094133 · as of October 8, 2026
Active · clear
Diablo Thermal Systems INC
Walnut Creek, CA · CSLB #823200 · as of October 8, 2026
Active · clear
Diablo Valley Heating & Air Conditioning
Antioch, CA · CSLB #810526 · as of October 8, 2026
Active · clear
Dial Leo Heating And Air
Antelope, CA · CSLB #969113 · as of October 8, 2026
Active · clear
Dial One Schilling Plumbing Heating & Air Conditioning
Lakewood, CA · CSLB #582886 · as of October 8, 2026
Active · clear
Diamond Heating & Air
Merced, CA · CSLB #1151243 · as of October 8, 2026
Active · clear
Diamond HVAC Services INC
Santa Rosa, CA · CSLB #1092525 · as of October 8, 2026
Active · clear
Diamond Mechanical LLC
Brentwood, CA · CSLB #1134349 · as of October 8, 2026
Active · clear
Diamond Quality Heating & Air Conditioning
Lancaster, CA · CSLB #1008272 · as of October 8, 2026
Active · clear
Erik Diaz Heating & Air INC
Modesto, CA · CSLB #987132 · as of October 8, 2026
Active · clear
Diaz Pro Velocity A/c & Heating
Moreno Valley, CA · CSLB #1106891 · as of October 8, 2026
Active · clear
Di Cicco's Mechanical INC
Sacramento, CA · CSLB #788195 · as of October 8, 2026
Active · clear
Michael Dickinson
Menifee, CA · CSLB #1014363 · as of October 8, 2026
Active · clear
Dickson CO
San Rafael, CA · CSLB #452427 · as of October 8, 2026
Active · clear
Dickson Mechanical
Yuba City, CA · CSLB #982514 · as of October 8, 2026
Active · clear
Digitemp CO
Encino, CA · CSLB #897791 · as of October 8, 2026
Active · clear
Christopher Dinner Heating INC
Monterey, CA · CSLB #684975 · as of October 8, 2026
Active · clear
Dominique Dinner Heating & Sheetmetal INC
Monterey, CA · CSLB #1117034 · as of October 8, 2026
Active · clear
Direct Ac INC
Riverside, CA · CSLB #933392 · as of October 8, 2026
Active · clear
Direct Air And Refrigeration
Fresno, CA · CSLB #1001237 · as of October 8, 2026
Active · clear
Direct Air Mechanical
Shingle Springs, CA · CSLB #1047331 · as of October 8, 2026
Active · clear
Direct Plumbing & Drains INC
Aguanga, CA · CSLB #1069024 · as of October 8, 2026
Active · clear
Dirty Crew Mechanical
Fair Oaks, CA · CSLB #1127162 · as of October 8, 2026
Active · clear
Discount Energy Solution
El Centro, CA · CSLB #962609 · as of October 8, 2026
Active · clear
Discount HVAC & Appliance Repair
Fairfield, CA · CSLB #1127109 · as of October 8, 2026
Active · clear
Dispatch Heating, Air Conditioning & Refrigeration
San Diego, CA · CSLB #1130496 · as of October 8, 2026
Active · clear
John Dittenhoefer
Nipomo, CA · CSLB #685206 · as of October 8, 2026
Active · clear
Diverse Mechanical Solutions Heating And Air
Adelanto, CA · CSLB #1137976 · as of October 8, 2026
Active · clear
Diversified HVAC
Yucca Valley, CA · CSLB #932767 · as of October 8, 2026
Active · clear
Divinair Heating And Air Conditioning
Riverside, CA · CSLB #964113 · as of October 8, 2026
Active · clear
Carlos Chavarria JR DBA Divine Air Conditioning & Heating
Coachella, CA · CSLB #1004681 · as of October 8, 2026
Active · clear
DJK Mechanical INC
Chula Vista, CA · CSLB #1043843 · as of October 8, 2026
Active · clear
D J S Heating & Air Conditioning INC
Covina, CA · CSLB #687667 · as of October 8, 2026
Active · clear
Dj's LLC DBA Dj's Heating And Air Conditioning
Fair Oaks, CA · CSLB #1148431 · as of October 8, 2026
Active · clear
D & K Heating & Air Conditioning
Vacaville, CA · CSLB #1100384 · as of October 8, 2026
Active · clear
D K Heating And Air Conditioning Services
El Monte, CA · CSLB #1007557 · as of October 8, 2026
Active · clear
D & K Mechanical INC
Reedley, CA · CSLB #1144442 · as of October 8, 2026
Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of October 8, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.