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

The California Contractors State License Board (CSLB) lists 8,995 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 2, 2026.

Showing 5,881–5,940 of 8,995 contractors

Nice And Cool INC
Los Angeles, CA · CSLB #959276 · as of July 2, 2026
Active · clear
Nice Weather H V A C
Fair Oaks, CA · CSLB #891596 · as of July 2, 2026
Active · clear
Nicholas Aire Systems
Santa Clarita, CA · CSLB #462231 · as of July 2, 2026
Active · clear
Nicholas Mechanical HVAC INC
Anaheim, CA · CSLB #992453 · as of July 2, 2026
Active · clear
Nick Air Conditioning INC
Ontario, CA · CSLB #1135910 · as of July 2, 2026
Active · clear
Nickel HVAC LLC
Woodland Hills, CA · CSLB #1131374 · as of July 2, 2026
Active · clear
Nickels HVAC
Concord, CA · CSLB #1144848 · as of July 2, 2026
Active · clear
Nick Rothman
San Francisco, CA · CSLB #1153277 · as of July 2, 2026
Active · clear
Nick's Heating And Refrigeration INC
Quincy, CA · CSLB #973571 · as of July 2, 2026
Active · clear
Psychrom INC DBA Nielsen Fire And Ice Heating And Air
Yucca Valley, CA · CSLB #1032788 · as of July 2, 2026
Active · clear
Nielson Mechanical INC
Fairfield, CA · CSLB #725457 · as of July 2, 2026
Active · clear
Nilco INC
Calabasas, CA · CSLB #677735 · as of July 2, 2026
Active · clear
Nine Islands Heating And Air
Newman, CA · CSLB #1074412 · as of July 2, 2026
Active · clear
Nino's Air
Stockton, CA · CSLB #1130259 · as of July 2, 2026
Active · clear
Nir Plumbing INC
Riverside, CA · CSLB #757144 · as of July 2, 2026
Active · clear
Nixon's Heating Air Conditioning And Plumbing INC
So Lake Tahoe, CA · CSLB #787917 · as of July 2, 2026
Active · clear
Nix Plumbing Heating And Air Conditioning
Brea, CA · CSLB #542033 · as of July 2, 2026
Active · clear
N J Air Conditining & Heating CO
Northridge, CA · CSLB #763540 · as of July 2, 2026
Active · clear
N K Heating & Air Conditioning INC
Antioch, CA · CSLB #786063 · as of July 2, 2026
Active · clear
N M Mechanical
Sacramento, CA · CSLB #774780 · as of July 2, 2026
Active · clear
NMR HVAC
Cupertino, CA · CSLB #1155425 · as of July 2, 2026
Active · clear
Noah's Air Conditioning And Heating
Lancaster, CA · CSLB #1124510 · as of July 2, 2026
Active · clear
Noble Air INC
Moorpark, CA · CSLB #978004 · as of July 2, 2026
Active · clear
Noble Mechanical INC
Shadow Hills, CA · CSLB #1112416 · as of July 2, 2026
Active · clear
Noek Heating And Air INC
Sunnyvale, CA · CSLB #1015931 · as of July 2, 2026
Active · clear
No Heating & Air
San Bernardino, CA · CSLB #1118548 · as of July 2, 2026
Active · clear
No Limit Heating & Air Conditioning
San Francisco, CA · CSLB #907886 · as of July 2, 2026
Active · clear
Nolte Heating And Cooling
Tuolumne, CA · CSLB #822147 · as of July 2, 2026
Active · clear
Nolte Sheet Metal INC
Fresno, CA · CSLB #438796 · as of July 2, 2026
Active · clear
Nor Air INC
Glendale, CA · CSLB #1052529 · as of July 2, 2026
Active · clear
Nor-cal Air Conditioning
Oakdale, CA · CSLB #578704 · as of July 2, 2026
Active · clear
Norcal Comfort Pros LLC
Sunnyvale, CA · CSLB #930533 · as of July 2, 2026
Active · clear
Norcal Cooling & Calibrations
Sacramento, CA · CSLB #803036 · as of July 2, 2026
Active · clear
Nor - Cal Heating And Airconditioning
San Leandro, CA · CSLB #595889 · as of July 2, 2026
Active · clear
Nor Cal Heating And Cooling
Sacramento, CA · CSLB #1083504 · as of July 2, 2026
Active · clear
Norcal Heating And Cooling INC
Campbell, CA · CSLB #932216 · as of July 2, 2026
Active · clear
Norcal HVAC
Soquel, CA · CSLB #1126623 · as of July 2, 2026
Active · clear
Norcal HVAC
Cotati, CA · CSLB #1136848 · as of July 2, 2026
Active · clear
Nor Cal Mechanical
El Dorado Hills, CA · CSLB #825097 · as of July 2, 2026
Active · clear
Norcal Mechanical
Ceres, CA · CSLB #1010494 · as of July 2, 2026
Active · clear
Nor Cool INC
Granada Hills, CA · CSLB #1049402 · as of July 2, 2026
Active · clear
Nordic Air Mechanical
Shingle Springs, CA · CSLB #827476 · as of July 2, 2026
Active · clear
Chris Nordin A/c And Heating
Desert Hot Springs, CA · CSLB #829516 · as of July 2, 2026
Active · clear
Nordstrom Air INC
Los Angeles, CA · CSLB #1041722 · as of July 2, 2026
Active · clear
Normandy Heating & Air INC
Stockton, CA · CSLB #396346 · as of July 2, 2026
Active · clear
Randell D Norman
Benicia, CA · CSLB #687446 · as of July 2, 2026
Active · clear
Nor-pacific Heating And Air
Fairfield, CA · CSLB #1128534 · as of July 2, 2026
Active · clear
Norris Plumbing & Heating INC
Tahoe City, CA · CSLB #777856 · as of July 2, 2026
Active · clear
North Bay Air Systems INC
Fairfield, CA · CSLB #325637 · as of July 2, 2026
Active · clear
North Bay Comfort INC
Rohnert Park, CA · CSLB #1096386 · as of July 2, 2026
Active · clear
North Bay Commercial Services INC
Santa Rosa, CA · CSLB #946744 · as of July 2, 2026
Active · clear
North Bay Heating And Cooling
Cromberg, CA · CSLB #973952 · as of July 2, 2026
Active · clear
North Breeze INC
Los Gatos, CA · CSLB #1127709 · as of July 2, 2026
Active · clear
North County Plumbing CO
Costa Mesa, CA · CSLB #595156 · as of July 2, 2026
Active · clear
North County Refrigeration
Escondido, CA · CSLB #1147010 · as of July 2, 2026
Active · clear
North End Plumbing Heating & Air
Santa Rosa, CA · CSLB #1107932 · as of July 2, 2026
Active · clear
Northern Aire INC
Reno, CA · CSLB #1027552 · as of July 2, 2026
Active · clear
Northern-air HVAC INC
Grass Valley, CA · CSLB #892307 · as of July 2, 2026
Active · clear
Northern Wind HVAC
Glendale, CA · CSLB #1149962 · as of July 2, 2026
Active · clear
North HVAC Services INC
Corte Madera, CA · CSLB #1054297 · as of July 2, 2026
Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of July 2, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.