California › Trades › HVAC

Licensed HVAC contractors in California

C-20 Warm-Air Heating, Ventilating and Air-Conditioning (HVAC). 402 cities have at least 5 contractors with an active license for this trade in CSLB's file dated Oct 20, 2026, 10,611 listings in all. Pick a city.

Heating and air conditioning work calls for a C-20 license. CSLB requires C-20 licensees to carry workers' compensation even if they have no employees, so check that a policy is on file.

Alameda County

Alameda (6)Berkeley (9)Castro Valley (10)Dublin (7)Fremont (24)Hayward (42)Livermore (55)Newark (9)Oakland (49)Pleasanton (21)San Leandro (35)Union City (10)

Butte County

Chico (32)Oroville (17)Paradise (6)

Calaveras County

Valley Springs (6)

Contra Costa County

Antioch (37)Brentwood (31)Clayton (8)Concord (77)Danville (15)Discovery Bay (11)Martinez (13)Oakley (17)Pacheco (9)Pittsburg (17)Pleasant Hill (13)Richmond (15)San Pablo (6)San Ramon (16)Walnut Creek (14)

El Dorado County

Cameron Park (8)Diamond Springs (9)El Dorado Hills (16)Placerville (18)Shingle Springs (26)South Lake Tahoe (10)

Fresno County

Clovis (48)Fresno (168)Kerman (6)Reedley (10)Sanger (6)Selma (5)

Humboldt County

Arcata (6)Eureka (8)

Imperial County

Brawley (8)Calexico (10)El Centro (22)Imperial (7)

Inyo County

Bishop (5)

Kern County

Bakersfield (166)Ridgecrest (6)Shafter (6)Taft (8)Tehachapi (10)

Kings County

Hanford (18)Lemoore (6)

Lake County

Lakeport (6)

Los Angeles County

Agoura Hills (9)Alhambra (19)Altadena (9)Arcadia (25)Arleta (13)Artesia (6)Azusa (16)Baldwin Park (15)Bellflower (26)Beverly Hills (11)Burbank (67)Calabasas (9)Canoga Park (37)Canyon Country (39)Carson (13)Castaic (11)Cerritos (19)Chatsworth (50)City Of Industry (11)Claremont (7)Commerce (7)Compton (9)Covina (23)Culver City (9)Diamond Bar (32)Downey (23)Duarte (9)El Monte (30)Encino (29)Gardena (28)Glendale (122)Glendora (36)Granada Hills (40)Hacienda Heights (19)Harbor City (6)Hawthorne (13)Inglewood (12)La Crescenta (21)La Mirada (18)La Puente (31)La Verne (27)Lakewood (21)Lancaster (66)Lawndale (11)Littlerock (9)Lomita (8)Long Beach (68)Los Angeles (263)Lynwood (13)Malibu (6)Mission Hills (21)Monrovia (15)Montebello (13)Monterey Park (12)Newhall (10)North Hills (23)North Hollywood (59)Northridge (55)Norwalk (26)Oak Park (5)Pacoima (9)Palmdale (50)Panorama City (19)Paramount (16)Pasadena (46)Pico Rivera (10)Pomona (26)Porter Ranch (10)Quartz Hill (5)Redondo Beach (6)Reseda (32)Rosemead (24)Rowland Heights (11)San Dimas (22)San Fernando (8)San Gabriel (16)San Marino (5)San Pedro (6)Santa Clarita (53)Santa Fe Springs (19)Santa Monica (8)Saugus (9)Shadow Hills (5)Sherman Oaks (29)Signal Hill (7)South El Monte (14)South Gate (12)Stevenson Ranch (8)Studio City (7)Sun Valley (33)Sunland (29)Sylmar (54)Tarzana (35)Temple City (15)Torrance (52)Tujunga (20)Valencia (26)Valley Village (14)Van Nuys (71)Walnut (23)West Covina (45)West Hills (34)West Hollywood (14)Whittier (56)Winnetka (29)Woodland Hills (64)

Madera County

Madera (33)

Marin County

Novato (16)San Rafael (16)

Mendocino County

Fort Bragg (6)Ukiah (13)

Merced County

Atwater (19)Los Banos (21)Merced (26)

Monterey County

Marina (7)Monterey (10)Pacific Grove (6)Salinas (22)Seaside (13)

Napa County

American Canyon (5)Napa (19)

Nevada County

Grass Valley (22)Truckee (12)

Orange County

Aliso Viejo (6)Anaheim (152)Brea (32)Buena Park (26)Costa Mesa (36)Cypress (24)Dana Point (5)Foothill Ranch (6)Fountain Valley (21)Fullerton (52)Garden Grove (52)Huntington Beach (70)Irvine (65)La Habra (21)La Palma (5)Laguna Hills (19)Laguna Niguel (12)Lake Forest (23)Los Alamitos (10)Mission Viejo (27)Newport Beach (7)Orange (81)Placentia (30)Rancho Santa Margarita (22)San Clemente (16)San Juan Capistrano (13)Santa Ana (54)Stanton (10)Tustin (22)Westminster (20)Yorba Linda (28)

Placer County

Auburn (20)Colfax (6)Granite Bay (11)Lincoln (23)Loomis (13)Meadow Vista (5)Newcastle (7)Rocklin (28)Roseville (63)

Riverside County

Banning (12)Beaumont (20)Blythe (7)Calimesa (8)Canyon Lake (9)Cathedral City (17)Coachella (21)Corona (104)Desert Hot Springs (30)Eastvale (14)Hemet (31)Indio (66)Jurupa Valley (25)La Quinta (25)Lake Elsinore (39)Menifee (41)Mira Loma (5)Moreno Valley (66)Murrieta (76)Norco (29)Palm Desert (57)Palm Springs (21)Perris (37)Riverside (199)San Jacinto (16)Temecula (53)Thermal (7)Thousand Palms (18)Wildomar (23)Winchester (15)

Sacramento County

Antelope (22)Carmichael (23)Citrus Heights (45)Elk Grove (69)Elverta (9)Fair Oaks (19)Folsom (20)Galt (9)North Highlands (28)Orangevale (25)Rancho Cordova (51)Rio Linda (13)Sacramento (249)Wilton (6)

San Benito County

Hollister (35)

San Bernardino County

Alta Loma (15)Apple Valley (31)Barstow (7)Big Bear City (7)Bloomington (8)Chino (50)Chino Hills (43)Colton (8)Fontana (44)Grand Terrace (7)Hesperia (32)Highland (14)Montclair (11)Oak Hills (15)Ontario (51)Rancho Cucamonga (75)Redlands (30)Rialto (20)San Bernardino (50)Twin Peaks (5)Upland (49)Victorville (31)Yucaipa (23)Yucca Valley (9)

San Diego County

Alpine (13)Bonita (9)Carlsbad (26)Chula Vista (58)El Cajon (102)Encinitas (5)Escondido (93)Fallbrook (20)Jamul (6)La Mesa (18)Lakeside (31)National City (17)Oceanside (39)Poway (20)Ramona (21)San Diego (236)San Marcos (20)San Ysidro (7)Santee (33)Spring Valley (17)Valley Center (19)Vista (35)

San Francisco County

San Francisco (96)

San Joaquin County

Acampo (5)Escalon (5)Lathrop (6)Lodi (17)Manteca (22)Ripon (5)Stockton (89)Tracy (25)

San Luis Obispo County

Atascadero (16)Grover Beach (5)Nipomo (12)Paso Robles (23)San Luis Obispo (9)

San Mateo County

Brisbane (5)Burlingame (10)Daly City (9)Menlo Park (10)Millbrae (7)Pacifica (5)Redwood City (26)San Bruno (5)San Carlos (11)San Mateo (19)South San Francisco (16)

Santa Barbara County

Buellton (7)Goleta (9)Lompoc (14)Orcutt (7)Santa Barbara (28)Santa Maria (22)

Santa Clara County

Campbell (20)Cupertino (10)Gilroy (40)Los Gatos (9)Milpitas (19)Morgan Hill (30)Mountain View (11)San Jose (270)Santa Clara (43)Sunnyvale (17)

Santa Cruz County

Felton (5)Soquel (6)Watsonville (11)

Shasta County

Anderson (9)Cottonwood (5)Redding (49)

Solano County

Benicia (13)Dixon (6)Fairfield (30)Vacaville (43)Vallejo (15)

Sonoma County

Cotati (8)Petaluma (22)Rohnert Park (16)Santa Rosa (77)Sebastopol (11)Sonoma (12)Windsor (11)

Stanislaus County

Ceres (20)Modesto (85)Oakdale (21)Patterson (14)Riverbank (6)Salida (7)Turlock (30)

Sutter County

Yuba City (23)

Tehama County

Red Bluff (8)

Tulare County

Porterville (13)Tulare (28)Visalia (46)Woodlake (5)

Tuolumne County

Sonora (11)

Ventura County

Camarillo (17)Fillmore (15)Moorpark (17)Newbury Park (14)Oxnard (35)Santa Paula (6)Simi Valley (80)Thousand Oaks (15)Ventura (26)Westlake Village (6)

Yolo County

Davis (7)West Sacramento (22)Winters (5)Woodland (19)

Yuba County

Marysville (6)Olivehurst (6)Plumas Lake (7)

County is the county most of a city's listings have on file with CSLB. Cities with fewer than 5 licensees for this trade don't get their own page yet. Those contractors are still in the license lookup.