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 3,061–3,120 of 8,936 contractors

Drain Right Services INC
Gardena, CA · CSLB #852708 · as of October 8, 2026
Active · clear
DR Air Pro Services
Irvine, CA · CSLB #1151974 · as of October 8, 2026
Active · clear
Chris Dray Heating & Air
Oakdale, CA · CSLB #1056423 · as of October 8, 2026
Active · clear
DR Dio Heating & Air Conditioning
Hacienda Heights, CA · CSLB #988248 · as of October 8, 2026
Active · clear
DRD Mechanical INC
Sacramento, CA · CSLB #1123996 · as of October 8, 2026
Active · clear
Dream Air Corp
Fontana, CA · CSLB #1146079 · as of October 8, 2026
Active · clear
Dre's Heating & A / C
San Diego, CA · CSLB #826794 · as of October 8, 2026
Active · clear
Daniel Corson DBA Dressler Heating & Cooling
Yreka, CA · CSLB #1058564 · as of October 8, 2026
Active · clear
Drewco Air Conditioning
Newbury Park, CA · CSLB #1052839 · as of October 8, 2026
Active · clear
D R G Mechanical INC
Garden Grove, CA · CSLB #1054301 · as of October 8, 2026
Active · clear
DR HVAC
Moorpark, CA · CSLB #1038749 · as of October 8, 2026
Active · clear
DR HVAC LLC
San Marcos, CA · CSLB #1157724 · as of October 8, 2026
Active · clear
D Right Temp Heating & Air
Ben Lomond, CA · CSLB #970437 · as of October 8, 2026
Active · clear
Drive Solutions
Bonsall, CA · CSLB #915347 · as of October 8, 2026
Active · clear
DR Koldaire
Van Nuys, CA · CSLB #587793 · as of October 8, 2026
Active · clear
DR Koolds HVAC Services
Fresno, CA · CSLB #1116685 · as of October 8, 2026
Active · clear
Drones HVAC
Lancaster, CA · CSLB #1098629 · as of October 8, 2026
Active · clear
Dro Pro HVAC
Ramona, CA · CSLB #1107473 · as of October 8, 2026
Active · clear
DR Refrigeration
Lennox, CA · CSLB #699120 · as of October 8, 2026
Active · clear
Dr's Heating And Cooling Services
Corona, CA · CSLB #1109674 · as of October 8, 2026
Active · clear
Dryer Vent Wizard
Los Angeles, CA · CSLB #1123357 · as of October 8, 2026
Active · clear
D S Heating & Air Conditioning
Los Angeles, CA · CSLB #884894 · as of October 8, 2026
Active · clear
D S Heating And Air Conditioning
Fresno, CA · CSLB #1010991 · as of October 8, 2026
Active · clear
DS HVAC INC
Ontario, CA · CSLB #1132699 · as of October 8, 2026
Active · clear
D&S Mechanical INC
Fresno, CA · CSLB #1089255 · as of October 8, 2026
Active · clear
D & S Refrigeration And H V A C
Corona, CA · CSLB #840413 · as of October 8, 2026
Active · clear
DSS High Performance HVAC Solutions
Ontario, CA · CSLB #1158389 · as of October 8, 2026
Active · clear
D T Air & Heating
El Monte, CA · CSLB #874333 · as of October 8, 2026
Active · clear
DT Mechanical
San Leandro, CA · CSLB #954729 · as of October 8, 2026
Active · clear
DT Mechanical Heating & Air
Merced, CA · CSLB #1124518 · as of October 8, 2026
Active · clear
D T S Mechanical INC
Elk Grove, CA · CSLB #865959 · as of October 8, 2026
Active · clear
D T W Mechanical INC
Lakeside, CA · CSLB #842853 · as of October 8, 2026
Active · clear
Artemio Duarte HVAC
Modesto, CA · CSLB #1119883 · as of October 8, 2026
Active · clear
Duarte Mechanical
Bakersfield, CA · CSLB #1118460 · as of October 8, 2026
Active · clear
William Duarte
San Francisco, CA · CSLB #1099006 · as of October 8, 2026
Active · clear
Duchess Heating & Air Conditioning INC
Whittier, CA · CSLB #1114630 · as of October 8, 2026
Active · clear
Ducks Plumbing Heating Air
Sacramento, CA · CSLB #1022840 · as of October 8, 2026
Active · clear
Duct Care Services
Brentwood, CA · CSLB #1028890 · as of October 8, 2026
Active · clear
The Duct Doctor INC
Santa Rosa, CA · CSLB #1104520 · as of October 8, 2026
Active · clear
Duct Dynasty Heating & Air
San Diego, CA · CSLB #1010169 · as of October 8, 2026
Active · clear
Duct Hunter
Fresno, CA · CSLB #1065715 · as of October 8, 2026
Active · clear
Ductless Heating And Cooling
Lynwood, CA · CSLB #1037593 · as of October 8, 2026
Active · clear
Ducts Ina Row
Redding, CA · CSLB #957746 · as of October 8, 2026
Active · clear
Ductworks
Somerton, CA · CSLB #799489 · as of October 8, 2026
Active · clear
Duff Mechanical Services
Aguanga, CA · CSLB #1109379 · as of October 8, 2026
Active · clear
Dugan Climate Control
Calexico, CA · CSLB #981318 · as of October 8, 2026
Active · clear
Dugan Heating & Air Conditioning
Temecula, CA · CSLB #907192 · as of October 8, 2026
Active · clear
Duke's Heating & Air Conditioning LLC
Newark, CA · CSLB #860923 · as of October 8, 2026
Active · clear
Dunbar Comfort Solutions INC
Rancho Cordova, CA · CSLB #991019 · as of October 8, 2026
Active · clear
Dunham Mechanical Services
Riverside, CA · CSLB #993612 · as of October 8, 2026
Active · clear
Dunham & Sons Air - Heating - Plumbing
Hemet, CA · CSLB #680799 · as of October 8, 2026
Active · clear
Dunmire Climate Control
San Jacinto, CA · CSLB #918087 · as of October 8, 2026
Active · clear
Dunn Plumbing Heating & Air Conditioning INC
Rancho Cucamonga, CA · CSLB #712182 · as of October 8, 2026
Active · clear
Dunn - Rite Heating & Air
Garden Grove, CA · CSLB #845225 · as of October 8, 2026
Active · clear
Dunright Heating & Air Conditioning
Phelan, CA · CSLB #1105467 · as of October 8, 2026
Active · clear
Dunrite Heating & Air INC
Los Gatos, CA · CSLB #963432 · as of October 8, 2026
Active · clear
Dunrite HVAC Enterprises INC DBA Dunrite Heating And Cooling
Simi Valley, CA · CSLB #875396 · as of October 8, 2026
Active · clear
Dupree Heating & Air LLC
Hanford, CA · CSLB #1004620 · as of October 8, 2026
Active · clear
Dupree's Air Conditioning & Heating
Hanford, CA · CSLB #1005073 · as of October 8, 2026
Active · clear
Duran HVAC INC
San Jose, CA · CSLB #1057800 · 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.