| Aer Construction | Alonzo Vivanco Ramirez | — | (916) 398 0448 | GC, remodel, ADU | Rio Vista · Solano County | — | — |
| Aer Electric | Jose Dorado | — | (442) 231 9457 | Electricians | Chula Vista · San Diego County | — | — |
| Aer Garage Door & Gates | Elad Rozenbaum | — | (866) 938 3290 | Other | North Hollywood · Los Angeles County | — | — |
| Aer Systems LLC | Joshua Cain Evans | mn@tritonair.net | (760) 840 0492 | HVAC | Carlsbad · San Diego County | — | — |
| Aerco Pacific INC | Joshua Crosby Houck | — | (916) 635 5635 | Windows, patio, painters | Rancho Cordova · Sacramento County | — | — |
| Aerco Systems LLC | Jared Mikael Wells | sales@aercosystems.com | (619) 443 3500 | HVAC | San Diego · San Diego County | — | — |
| Aeria HVAC | Viktor Frantsuzov | hello@aeriahvac.com | (805) 429-8535 | HVAC | Idyllwild · Riverside County | — | — |
| Aerial 10 INC | Bret Adam Mc Comb | — | (530) 368 0532 | GC, remodel, ADU | Auburn · Placer County | — | — |
| Aerial Aces Construction INC | John Kenneth Wolf | — | (530) 865 9504 | Other | Corning · Tehama County | — | — |
| Aerial Construction And Equipment | Travis Roy Adams | — | (530) 200 5886 | Other | Chico · Butte County | — | — |
| Aerie Construction | Andrew Jay Walbert | — | (415) 902 7777 | GC, remodel, ADU | Mill Valley · Marin County | — | — |
| Aerify Heating And Air | Gaor Aaron Cervantes Lagunas | service@aerifysandiego.com | (619) 734 9949 | HVAC | Lakeside · San Diego County | — | — |
| Aerioconnect LLC | Thanh Nien Lam | — | (818) 356 9685 | Other | Sherman Oaks · Los Angeles County | — | — |
| Aeris Mechanical INC | Alexander P Golubev | mn@tritonair.net | (619) 261 2844 | HVAC | San Diego · San Diego County | — | — |
| Aeris Mep | Josue Daniel Lozano | — | (323) 422 6029 | HVAC | Los Angeles · Los Angeles County | — | — |
| Aerner Painting INC | Jorge Emilio Ramirez | — | (559) 974 8807 | Windows, patio, painters | Madera · Madera County | — | — |
| Aero Ducks Heating And Air Conditioning | Michael Charles Phillips | — | (530) 919 6959 | HVAC | Truckee · Nevada County | — | — |
| Aero Electric | Lauren Jefferson Mackey | — | (707) 978 4664 | Electricians | Santa Rosa · Sonoma County | — | — |
| Aero Fresh Industries INC | Timothy Robert Shelly | — | (909) 877 6991 | HVAC | Bloomington · San Bernardino County | — | — |
| Aero Mechanics Inc. | Doru Calin Alexa | — | (916) 216 1371 | HVAC | Roseville · Placer County | — | — |
| Aero Precision Mechanical INC | Jesse Macias | — | (909) 890 8957 | Other | Riverside · Riverside County | — | — |
| Aero Shade Co INC | Miriam Elka Pitson | — | (310) 864 2918 | Other | Los Angeles · Los Angeles County | — | — |
| Aero Shade Co INC DBA Melrose Shade Co | Jack Pitson | — | (310) 864 2918 | Other | Los Angeles · Los Angeles County | — | — |
| Aerobu Construction | David Eric Bushlow | — | (831) 238 4291 | GC, remodel, ADU | Monterey · Monterey County | — | — |
| Aerodynamix HVAC INC | Rodney Isa| Greene Rod Greene | — | (310) 822 7292 | HVAC | Los Angeles · Los Angeles County | — | — |
| Aeronex Heating & Cooling INC | Itzhak Bokobzha | — | (310) 866 8693 | HVAC | Tarzana · Los Angeles County | — | — |
| Aeroscopic Environmental INC | Pamela Joy Spiszman | — | (818) 543 3930 | GC, remodel, ADU | Glendale · Los Angeles County | — | — |
| Aeroseal Pacific | Brian Francis Laughter | — | (760) 591 3840 | HVAC | Carlsbad · San Diego County | — | — |
| Aerosphere Electric | Muhammad Akram Diab | moediab@aerosphereelectric.com | (714) 499 6656 | HVAC | Fountain Valley · Orange County | — | — |
| Aerostar Construction INC | Lior Leo Astrahan | — | (818) 203 7523 | GC, remodel, ADU | Encino · Los Angeles County | — | — |
| Aerotech Heating And Air Conditioning | Aerotech Heating And Air Conditioning | — | (916) 479 4787 | HVAC | Elk Grove · Sacramento County | — | — |
| Aerron Builders INC | Aaron Thomas Espinoza | — | (858) 663 1935 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Aes Companies INC | Velazquez Ignacio | — | (831) 638 1737 | Electricians | Hollister · San Benito County | — | — |
| Aes Creative INC | Jeffrey Marshall Siglock | — | (626) 334 9388 | GC, remodel, ADU | Azusa · Los Angeles County | — | — |
| Aes Electric Group INC | Jason Anthony Vera | — | (626) 665 2856 | Electricians | Montebello · Los Angeles County | — | — |
| Aes Electric Services | Angel Adrian Cardenas | — | (951) 292 3428 | Electricians | Perris · Riverside County | — | — |
| Aes Group INC | Kenneth Gerard Bonkowski | — | (415) 507 9373 | GC, remodel, ADU | San Rafael · Marin County | — | — |
| Aes Industrial INC | Kevin Fitzgerald | — | (510) 346 4300 | HVAC | Pasadena · Los Angeles County | — | — |
| Aesir Construction | Jonathan Dario Canela | — | (323) 774 8986 | GC, remodel, ADU | La Puente · Los Angeles County | — | — |
| Aesthete INC | Susan Lynn Williams | — | (415) 864 7178 | Windows, patio, painters | San Francisco · San Francisco County | — | — |