C-20 — page 6 of 17
4,849 clear company licenses whose first classification is “C-20 — Warm-Air Heating, Ventilating and Air-Conditioning”.
1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · 12 · 13 · 14 · 15 · 16 · 17
| Place | Contractor | License | Main classification | Expires |
|---|---|---|---|---|
| Los Banos, CA | CONLEY HEATING AND AIR INC | 1105928 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Tustin, CA | CONNECTED HEATING & AIR CORPORATION | 890199 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Temple City, CA | CONNOR AIR CONDITIONING AND REFRIGERATION INC | 403735 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2027 |
| Anaheim, CA | CONQUEST AIR INC | 809578 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Pasadena, CA | CONSOLIDATED MECHANICAL AIR CONDITIONING & HEATING INC | 732589 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Menifee, CA | CONSTANT COMFORT HEATING & COOLING INC | 1028866 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Costa Mesa, CA | CONTEMPORARY AIR CONTROL INC | 575613 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2026 |
| Placentia, CA | CONTEMPORARY HEATING & AIR CONDITIONING INC | 582686 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| North Hills, CA | CONTINENTAL HEATING & AIR INC | 1124018 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Concord, CA | CONTRA COSTA CLIMATE CONTROL INC | 813250 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2026 |
| San Mateo, CA | CONTROL POINT AIR | 1068207 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Redlands, CA | CONTROL TEMP INC | 596669 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2026 |
| Gilroy, CA | CONTROLLED AIR SYSTEMS EASY COOL CONTROLLED AIR SYSTEMS INC | 908009 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Laguna Hills, CA | CONTROLLED CLIMATES INC | 845656 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2026 |
| Lawndale, CA | CONTROLLED COMFORT CORP | 1061861 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Ventura, CA | CONTROLLED ELEMENTS CORP | 973493 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2027 |
| Glendale, CA | CONTROLLED ENVIRONMENT HVAC INC | 1010440 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Corona, CA | CONTROLLED ENVIRONMENT SPECIALIST | 1108530 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| Santa Clara, CA | CONTROLLED SYSTEMS M T L CONTROLLED SYSTEMS INC | 861874 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Chino, CA | CONTROLWORKS INC | 814065 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2028 |
| La Habra, CA | CONVENIENT AIR INC | 936103 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Santa Clara, CA | COOL AID A / C AND REFRIGERATION | 776244 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Los Angeles, CA | COOL AIR CALIFORNIA HEATING & COOLING INC | 1140026 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Kelseyville, CA | COOL AIR CONDITIONING & HEATING INC | 576429 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2027 |
| El Cajon, CA | COOL AIR FOR YOU L J R INDUSTRIES INC | 916068 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Anaheim, CA | COOL AIR REFRIGERATION | 975999 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Selma, CA | COOL AIR SPECIALTY INC | 1068770 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| Tustin, CA | COOL AIR TECHNOLOGIES INC | 745012 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Brentwood, CA | COOL AIRE SYSTEMS INC | 390869 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2026 |
| San Jacinto, CA | COOL BEAR HEATING & AIR INC | 1108804 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| Brentwood, CA | COOL BREEZE T & J CARMONA INC | 811513 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Plumas Lake, CA | COOL BREEZE AIR LLC | 1143051 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Sacramento, CA | COOL BREEZE HEATING & AIR | 1118352 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Reno, NV | COOL BREEZE REFRIGERATION INC | 960225 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2028 |
| Modesto, CA | COOL CARE HEATING AND AIR CONDITIONING INC | 961529 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Sylmar, CA | COOL CHOICE HVAC LLC | 1154957 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Glendale, CA | COOL CLIMATE INC | 1117982 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Wildomar, CA | COOL COMFORT HEATING & AIR | 1141325 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Van Nuys, CA | COOL CONTROL GROUP INC | 1102418 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2027 |
| Laguna Beach, CA | COOL CORRECT AIR CORP | 1142706 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| La Quinta, CA | COOL FLOW AIR CONDITIONING & HEATING LLC | 1148298 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| Salida, CA | COOL GUY MECHANICAL INC | 1070337 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| San Diego, CA | COOL GUYS | 1156890 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Palm Springs, CA | COOL GUYS AIR CONDITIONING AND HEATING | 1041125 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Sunland, CA | COOL GUYS HEATING AND COOLING INC | 1062510 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| San Jose, CA | COOL GUYS MECHANICAL INC | 1002413 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2027 |
| Pine Valley, CA | COOL HAND LUKE HEATING & AIR CONDITIONING | 1082631 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Camarillo, CA | COOL HERO HEATING & AIR LLC | 1158942 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Poway, CA | COOL IT HEAT IT INC | 975400 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Bakersfield, CA | COOL JAY'S AIR CONDITIONING INC | 1152312 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Cameron Park, CA | COOL MECHANICAL INCORPORATION | 995770 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Madera, CA | COOL N HEAT LLC | 1136363 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2027 |
| Glendale, CA | COOL N HEAT PROS INC | 1135959 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2027 |
| Winnetka, CA | COOL SUMMER AIR & HEAT INC | 1066592 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Santa Barbara, CA | COOL TECH HVAC INC | 1115124 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Northridge, CA | COOL TEMP HEATING & AIR CONDITIONING INC | 1020954 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2026 |
| Ventura, CA | COOL WEST AIR CONDITIONING AND HEATING | 745932 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Glendale, CA | COOL WORKS HVACR INC | 1025608 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2027 |
| Gardena, CA | COOLAND INC | 927357 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2027 |
| Brea, CA | COOLARIS HVAC INC | 1153046 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Alpine, CA | COOLER GUYS THE | 1039816 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Antioch, CA | COOLER SOLUTIONS INC | 832874 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Indio, CA | COOLEST AIR | 1058689 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Murrieta, CA | COOLEYS HEATING & AIR | 1156924 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| San Diego, CA | COOLFIX PRO INC | 1132907 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Los Banos, CA | COOLFLOW SOLUTIONS HEATING AND COOLING | 1139219 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Fullerton, CA | COOLING & HEATING REPAIR INC | 1093030 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Hawthorne, CA | COOLING AND FREEZING ART | 1079478 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| Woodland Hills, CA | COOLING AND HEATING ART LLC | 1105583 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| Concord, CA | COOLING AND HEATING SOLUTIONS CYCLONE AIR SYSTEMS INC | 1053819 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Inglewood, CA | COOLING COMFORT INC | 1153213 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| La Verne, CA | COOLING INDUSTRIES INC | 1148285 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| San Gabriel, CA | COOLMANAGED INC | 1083498 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| Los Angeles, CA | COOLMART GROUP INC | 911691 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Anaheim, CA | COOLPROS HEATING AND AIR | 1115021 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Bakersfield, CA | COOLRIDGE ROOFING & AIR | 1142526 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| North Highlands, CA | COOLVIBESHVAC LLC | 1157286 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Lynwood, CA | COPELAND HEATING AND AIR CONDITIONING LLC | 1099290 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| Newark, CA | COPELAND MECHANICAL INC | 1121136 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Glendale, CA | COPPER HEATING AND AIR CONDITIONING INC | 1118466 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| Anaheim, CA | CORAM HVAC CORP | 1126171 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| Petaluma, CA | CORE HEATING & AIR CONDITIONING | 1038373 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Pennsauken, NJ | CORE MECHANICAL INC | 1000795 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Santa Clarita, CA | CORE MECHANICAL SYSTEMS INC | 962430 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Moorpark, CA | CORETEMP MECHANICAL SYSTEMS | 1126323 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| Oakdale, CA | CORETEMP SERVICES INC | 1151042 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Santa Maria, CA | CORNEJO HEATING AND AIR LLC | 1157582 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Torrance, CA | CORNETT PLUMBING & HEATING INC | 366365 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2026 |
| Villa Rica, GA | CORVANT ROGERS MECHANICAL CONTRACTORS LLC | 1078501 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| San Bernardino, CA | COSS HEATING & AIR CONDITIONING | 1152185 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Milpitas, CA | COST LESS HEATING AND COOLING INC | 1043777 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Applegate, CA | COUNTRY AIR CONDITIONING INC | 687211 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Reseda, CA | COUNTRY AIR INC | 672675 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| Orange, CA | COUNTY HEATING AND AIR CONDITIONING INCORPORATED | 396569 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2026 |
| Orange, CA | COUNTY WIDE PLUMBING HEATING ROOTER & AIR C W P H R A INC | 661232 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| El Cajon, CA | COUNTYWIDE MECHANICAL SYSTEMS LLC | 1111305 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2027 |
| Redding, CA | COUSIN VINNIE'S HEATING & AIR | 1134193 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2027 |
| Alhambra, CA | COVAC INC | 1050753 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Riverside, CA | COVELLO'S PACIFIC AIR CARE INC | 929914 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2027 |
| Brea, CA | COVENANT AIR SYSTEMS INC | 657733 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| Cypress, CA | COZY PROS HEATING & AIR LLC | 1141958 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| San Mateo, CA | CP MECHANICAL BAYSIDE HEATING & AIR CONDITIONING INC | 558197 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| Martinez, CA | CRAYS COOLING CO | 970602 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Fresno, CA | CRC PLUMBING & AIR LLC | 1130915 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2026 |
| Bakersfield, CA | CREATIVE AIR CONDITIONING & HEATING | 929843 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2027 |
| Anaheim, CA | CREATIVE AIR MECHANICAL SERVICES LLC | 990931 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Long Beach, CA | CREATIVE COOLING TECHNOLOGIES INC | 1028537 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Brentwood, CA | CRESTPOINT MECHANICAL LLC | 1156345 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Huntington Beach, CA | CRITCHFIELD MECHANICAL INC OF SOUTHERN CALIFORNIA | 842973 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Mesa, AZ | CRITICAL AIR TECHNOLOGIES LLC | 1022842 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Calimesa, CA | CRITICAL HEATING & AIR SOLUTIONS LLC | 1143761 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Santa Barbara, CA | CROCKER REFRIGERATION HEATING & AIR CROCKER GROUP CORP | 399854 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| San Diego, CA | CROSS BREEZE HEATING & AIR DATZKOOL HEATING & AIR INC | 1055889 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Downey, CA | CROSSFIRE SERVICES INC | 889993 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2027 |
| Los Molinos, CA | CROSSLAND'S HEATING AND AIR CONDITIONING DAVY'S HEATING AND AIR CONDITIONING INC | 212775 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2026 |
| Simi Valley, CA | CROWE MECHANICAL LLC | 1140007 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Yucaipa, CA | CROWLEY COOLING & HEATING LLC | 1121173 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Lakeside, CA | CROWN AIR MECHANICAL INC | 720156 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Roseville, CA | CROWN HEATING & AIR | 1149413 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Ramona, CA | CRUZ COMFORT HEATING & AIR INC | 1119997 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Newman, CA | CRUZER AIR INC | 1091343 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Corona, CA | CRYO HVAC LLC | 1148839 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Citrus Heights, CA | CULBERTSON HEATING & AIR | 854410 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Shingle Springs, CA | CULVER COMMERCIAL HVAC SERVICES CULVER COMMERCIAL SERVICES LLC | 1110203 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Simi Valley, CA | CUNEO AIR INC | 783055 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Lakewood, CA | CURRENT HEATING AND AIR LLC | 1153333 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Santa Maria, CA | CURT LANINI PLUMBING AND HEATING | 1031581 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2027 |
| Anaheim, CA | CUSTOM AIR CONDITIONING INC | 919945 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Santa Clarita, CA | CUSTOM AIR SPECIALISTS INC | 994862 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Simi Valley, CA | CUSTOM AIR SYSTEMS FRAYE'S CUSTOM AIR CORPORATION | 709387 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2027 |
| Sparks, NV | CUSTOM AIRE INC | 1077282 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Geyserville, CA | CUSTOM COMFORT HEATING AND COOLING INC | 931823 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2026 |
| Centerville, UT | CUSTOM MECHANICAL DESIGN | 835867 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Escondido, CA | CUSTOM MECHANICAL INC | 798499 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Orange, CA | CUTTING EDGE SERVICES INC | 1010182 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Laguna Hills, CA | CYCLE HEATING AND AIR LLC | 1116187 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Glendora, CA | CYPRESS HEATING & AIR CONDITIONING INC | 593268 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Fontana, CA | D & D HVAC INC | 1117423 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Long Beach, CA | D & D REFRIGERATION INC | 455063 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Roseville, CA | D & H REFRIGERATION INC | 1094133 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Reedley, CA | D & K MECHANICAL INC | 1144442 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2027 |
| Sanger, CA | D & M HEATING & COOLING INC | 993176 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| San Francisco, CA | D & W HVAC INC | 773400 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Palmdale, CA | D A C MECHANICAL | 1114390 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| Midway City, CA | D AIR BALANCE INC | 1130082 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2026 |
| Elk Grove, CA | D B E MECHANICAL INC | 1118040 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Mission Hills, CA | D B H V A C & APPLIANCE REPAIRS INC | 1026894 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| San Diego, CA | D C A C AIR CONDITIONING | 1014884 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Laguna Hills, CA | D C'S HEATING & AIR CONDITIONING | 751391 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Chula Vista, CA | D J K MECHANICAL INC | 1043843 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Covina, CA | D J S HEATING & AIR CONDITIONING INC | 687667 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| National City, CA | D L G HEATING & AIR CONDITIONING CORP | 1058447 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Palm Desert, CA | D M D MECHANICAL INC | 812757 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| Burbank, CA | D N R A / C & HEATING INC | 945200 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Garden Grove, CA | D R G MECHANICAL INC | 1054301 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Elk Grove, CA | D T S MECHANICAL INC | 865959 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2027 |
| Lakeside, CA | D T W MECHANICAL INC | 842853 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Norco, CA | D V K SERVICE HVAC & PLUMBING D V K SERVICE INC | 1012417 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| Elk Grove, CA | D WEBERS MECHANICAL INC | 1038221 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Arleta, CA | D&D HVAC SOLUTIONS | 1137371 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Fresno, CA | D&S MECHANICAL INC | 1089255 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Delhi, CA | D/M HEATING & AIR INC | 722214 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| San Jose, CA | DAAS HEATING & COOLING INC | 1060720 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Palmdale, CA | DAC HEATING AND AIR | 1030236 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Simi Valley, CA | DAHME HEATING AND AIR CONDITIONING INC | 590084 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Minneapolis, MN | DAIKIN APPLIED AMERICAS INC | 699581 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2026 |
| Granada Hills, CA | DAIMLER AIR CONDITIONING INC | 1136654 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2027 |
| Gridley, CA | DAKE BROS HEATING & AIR LLC | 991714 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Santa Rosa, CA | DALE HEATING COOLING & SHEETMETAL INC | 952649 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2026 |
| La Mesa, CA | DALE-AIR INC | 1096291 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| Indian Wells, CA | DAN ONLY HVAC INC | 1073547 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Fullerton, CA | DAN PAREDES INC | 1158996 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Lake Arrowhead, CA | DAN SEELEY'S HEATING & AIR CONDITIONING INC | 1161901 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| Sylmar, CA | DAN SON AIR INC | 1013914 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Visalia, CA | DAN'S APPLIANCE REPAIR A/C & HEATING INC | 977644 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2026 |
| Carson, CA | DANCO D C AIR CONDITIONING CO INC | 698149 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2026 |
| Orange, CA | DANDY HEATING AND AIR SEA-INLAND LLC | 717839 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2026 |
| Winton, CA | DANI'S HEATING AND AIR CONDITIONING INC | 1117030 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Upland, CA | DANIEL MECHANICAL SERVICE CO | 832178 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Newhall, CA | DANSSON MECHANICAL INC | 784711 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Santa Clarita, CA | DASCO MECHANCIAL SERVICES INC | 992175 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| San Bernardino, CA | DATTILO'S MARK HEATING AND AIR CONDITIONING INC | 543701 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Elk Grove, CA | DAVCO / TAB MECHANICAL INC | 861968 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Palmdale, CA | DAVCO AIR CONDITIONING INC | 1018835 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| Pacific Grove, CA | DAVID BROWN HEATING & AIR CONDITIONING LLC | 1076388 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Orange, CA | DAVINCI MECHANICAL LLC | 1083101 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2027 |
| Gilroy, CA | DAVIS HVAC INC | 1041260 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Newbury Park, CA | DAVIS KYLE AIR CONDITIONING AND HEATING INC | 962550 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| Vista, CA | DAVIS MECHANICAL SYSTEMS DAVIS HUDSON P INC | 584824 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Fresno, CA | DAY & NIGHT HEATING-N-COOLING | 1101099 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2027 |
| Canyon Country, CA | DAY & NIGHT PLUMBING OF MISSION HILLS INC | 870301 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Lancaster, CA | DC AIR AND HEATING LLC | 1158770 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Fresno, CA | DC HEATING & COOLING INC | 986868 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Modesto, CA | DC MECHANICAL LLC | 1113800 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| La Puente, CA | DCAC MECHANICAL INC | 1115613 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Oroville, CA | DE AIR COMPANY INC | 478347 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2027 |
| San Jose, CA | DE HVAC INC | 1153927 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Mission Viejo, CA | DE JONG AIR CONDITIONG & HEATING | 625188 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Tulare, CA | DE OCHOA HEATING & AIR CONDITIONING | 1049311 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2027 |
| Rescue, CA | DEAL HEATING AND AIR INC | 796396 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| West Sacramento, CA | DEAL MECHANICAL INC | 445102 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Bishop, CA | DEAN'S PLUMBING & HEATING INC | 798921 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| La Crescenta, CA | DEGREE COOLING AND HEATING INC | 1143112 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| San Carlos, CA | DEGREE H V A C INC | 886908 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2026 |
| Palm Desert, CA | DEH MECHANICAL COMPANY INC | 752819 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Pittsburg, CA | DEI MONTI INC | 747609 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Redondo Beach, CA | DEL MAR MECHANICAL INC | 833288 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Antioch, CA | DEL MONTE MECHANICAL INC | 950940 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| El Cajon, CA | DEL VALLE HEATING & AIR CONDITIONING INC | 1111030 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2027 |
| Livermore, CA | DELCON HEATING AND AIR CONDITIONING | 493271 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Sacramento, CA | DELTA BREEZE AIR CONDITIONING AND HEATING INC | 845350 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2027 |
| Alpine, CA | DELTA ENERGY DESIGNS SYSTEMS INC | 326622 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Victor, CA | DELTA GOLD HEATING & AIR INC | 987544 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2027 |
| El Cajon, CA | DELTA HEATING AND COOLING DELTA HEATING & A/C | 1057671 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Hollister, CA | DELTA MECHANICAL SOLUTIONS INC | 1128575 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2026 |
| San Ardo, CA | DELTA METAL HVAC INC | 1066820 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Anaheim, CA | DELTA PLUMBING & HVAC INC | 1002045 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| City Of Industry, CA | DELTA REFRIGERATION CORPORATION | 940053 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| Anaheim, CA | DELTA T H V A C INC | 1014459 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Folsom, CA | DELTA T MECHANICAL | 1113769 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| Woodland, CA | DELUXE AIR INC | 994539 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Healdsburg, CA | DENNIS FURIA HEATING & AIR CONDITIONING INC | 851924 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2026 |
| San Francisco, CA | DENNIS'S HEATING & COOLING | 1137367 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Napa, CA | DENNY'S HEATING & AIR CONDITIONING LLC | 688217 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Carmichael, CA | DEPENDABLE AIR DUCT & DRYER VENT CLEANING INC | 1129515 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2026 |
| Dixon, CA | DEPENDABLE HEATING & AIR CONDITIONING DEPENDABLE SHEET METAL | 337847 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| Moreno Valley, CA | DEPENDABLE PLUMBER INC | 1116701 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Poway, CA | DEPENDABLE PLUMBING DEPENDABLE GROUP INC THE | 719678 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Modesto, CA | DERMOND HEATING & AIR CONDITIONING INC | 810094 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| El Centro, CA | DESERT AIR CONDITIONING D A A S COMPANY INC | 844592 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Palm Springs, CA | DESERT AIR CONDITIONING INC | 276586 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Oct 31, 2028 |
| Hesperia, CA | DESERT AIR HEATING & COOLING INC | 1116024 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Thousand Palms, CA | DESERT CLIMATE CONTROL INC | 983501 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Cathedral City, CA | DESERT COMFORT HEATING AND COOLING CORPORATION | 1005729 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Indio, CA | DESERT COOLER SPECIALIST INC | 595145 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Joshua Tree, CA | DESERT LION AIR SERVICES INC | 1114838 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Sylmar, CA | DESERT MECHANICAL INC | 913213 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Palm Desert, CA | DESERT OASIS AIR CONDITIONING PLUMBING AND HEATING INC | 855144 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Redlands, CA | DESERT QUALITY HEATING & AIR CONDITIONING INC | 702855 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Palm Springs, CA | DESERT RESORT AIR CONDITIONING & HEATING | 1036644 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Soquel, CA | DESIGN AIR MECHANICAL INC | 1112847 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| San Jose, CA | DESIGN HEATING & AIR CONDITIONING INC | 948420 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Bellflower, CA | DESIGNER PLUMBING & AIR INC | 950508 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Van Nuys, CA | DETAILS MATTER HVAC | 1153013 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Roseville, CA | DEVCO MECHANICAL INC | 505507 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2027 |
| Oceanside, CA | DEWILDT ENVIRONMENTAL INC | 749748 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2028 |
| Orange, CA | DGL AIR CONDITIONING & HEATING INC | 622345 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Brentwood, CA | DHA MECHANICAL INC | 1086837 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Sacramento, CA | DI CICCO'S MECHANICAL INC | 788195 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2026 |
| Walnut Creek, CA | DIABLO THERMAL SYSTEMS INC | 823200 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Lakewood, CA | DIAL ONE SCHILLING PLUMBING HEATING & AIR CONDITIONING W S J INC | 582886 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2026 |
| Merced, CA | DIAMOND HEATING & AIR OBSIDIAN VENTURES INC | 1151243 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Santa Rosa, CA | DIAMOND HVAC SERVICES INC | 1092525 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Brentwood, CA | DIAMOND MECHANICAL LLC | 1134349 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2027 |
| Modesto, CA | DIAZ ERIK HEATING & AIR INC | 987132 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Monterey, CA | DINNER CHRISTOPHER HEATING INC | 684975 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Monterey, CA | DINNER DOMINIQUE HEATING & SHEETMETAL INC | 1117034 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 29, 2028 |
| Riverside, CA | DIRECT AC INC | 933392 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| Aguanga, CA | DIRECT PLUMBING & DRAINS INC | 1069024 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| El Centro, CA | DISCOUNT ENERGY SOLUTION | 962609 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Fairfield, CA | DISCOUNT HVAC & APPLIANCE REPAIR | 1127109 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| San Diego, CA | DISPATCH HEATING, AIR CONDITIONING & REFRIGERATION SEKA HVAC & APPLIANCE REPAIR INC | 1130496 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2026 |
| Fair Oaks, CA | DJ'S HEATING AND AIR CONDITIONING DJ'S LLC | 1148431 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| Alta Loma, CA | DM MECHANICAL INC | 1104592 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| San Diego, CA | DMA MECHANICAL INC | 1071053 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| San Dimas, CA | DMS AIR INC | 1086341 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Fresno, CA | DNA BROS MECHANICAL E-Z GLIDE LUBRICANTS & EQUIPMENT SUPPLY INC | 1160081 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2028 |
| Panorama City, CA | DNA HEATING AND COOLING INC | 1046362 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2026 |
| Penn Valley, CA | DO HVAC INC | 1067074 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Rancho Cucamonga, CA | DOAIR INC | 1104424 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Canoga Park, CA | DOCTOR AIR INC | 1107872 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Twin Peaks, CA | DOMINION AC & HEATING | 1089062 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| Coarsegold, CA | DON DAVIS HEATING & COOLING INC | 1144363 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Santa Barbara, CA | DON'S HEATING & AIR CONDITIONING INC | 483508 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2027 |
| Santa Rosa, CA | DONE RIGHT HVAC SERVICES LLC | 1122386 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Perris, CA | DONE RITE HEATING & AIR INC | 1100840 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2027 |
| Meadow Vista, CA | DONNER MECHANICAL HEATING & AIR DONNER MECHANICAL LLC | 1133101 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| La Quinta, CA | DORI'S HEATING & AIR CONDITIONING INC | 1064784 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2028 |
| Tracy, CA | DOUBLE R HEATING & AIR CONDITIONING INC | 1057850 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2027 |
| Cathedral City, CA | DOVE AIR INC | 794315 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Sep 30, 2028 |
| Etna, CA | DOWNEY HEATING & COOLING INC | 855692 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jun 30, 2027 |
| Downey, CA | DOWNEY PLUMBING HEATING & AIR CONDITIONING CO INC | 731172 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Novato, CA | DOWNING HEATING INC | 1080113 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Aug 31, 2027 |
| Twain Harte, CA | DOYLE MECHANICAL | 578788 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Placentia, CA | DPL AIR CONDITIONING INC | 801191 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Tarzana, CA | DR A/C INC | 968838 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Dec 31, 2027 |
| Irvine, CA | DR AIR PRO SERVICES | 1151974 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Mar 31, 2028 |
| San Marcos, CA | DR HVAC LLC | 1157724 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Gardena, CA | DRAIN RIGHT SERVICES INC | 852708 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Sacramento, CA | DRD MECHANICAL INC | 1123996 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Fontana, CA | DREAM AIR CORP | 1146079 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Nov 30, 2027 |
| Los Angeles, CA | DRYER VENT WIZARD XPR SUNSET INC | 1123357 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2028 |
| Ontario, CA | DS HVAC INC | 1132699 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| San Leandro, CA | DT MECHANICAL | 954729 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Apr 30, 2028 |
| Whittier, CA | DUCHESS HEATING & AIR CONDITIONING INC | 1114630 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Sacramento, CA | DUCKS PLUMBING HEATING AIR | 1022840 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jan 31, 2028 |
| Brentwood, CA | DUCT CARE SERVICES | 1028890 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Jul 31, 2027 |
| Santa Rosa, CA | DUCT DOCTOR INC THE | 1104520 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | May 31, 2027 |
| Redding, CA | DUCTS INA ROW HIGH EFFICIENCY SOLUTIONS INC | 957746 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
| Newark, CA | DUKE'S HEATING & AIR CONDITIONING LLC | 860923 | C-20 — Warm-Air Heating, Ventilating and Air-Conditioning | Feb 28, 2027 |
Alphabetical order — this site ranks no one. Company licenses with a clear status in the CSLB file of October 1, 2026. Sole owners are not on this site; for today's status and complaints, use the CSLB's Instant License Check. How to read this.