| Air Smith & Sons INC | Christopher William Smith | — | (951) 202 4957 | HVAC | Jurupa Valley · Riverside County | — | — |
| Air Techs Heating & Cooling INC | Villa Gerardo | — | (951) 837 5350 | HVAC | Hemet · Riverside County | — | — |
| Air Zone Heating And Air Conditioning | Luis Alfonso Mejia | — | (951) 660 5957 | HVAC | Riverside · Riverside County | — | — |
| Airborne Electric LLC | Eric James Bishop | — | (760) 468 6867 | Electricians | Murrieta · Riverside County | — | — |
| Airco Air Conditioning & Heating Services INC | Gary Joel Griffith | — | (951) 672 6600 | HVAC | Murrieta · Riverside County | — | — |
| Aircore Heating And Cooling | Aircore Heating And Cooling | — | (760) 238 2812 | HVAC | Mecca · Riverside County | — | — |
| Aire Engineering LLC | Rene Randolph Ramirez | — | (951) 390 1378 | HVAC | Hemet · Riverside County | — | — |
| Aire Serv Of Corona | Randall Allen Kemnitz | — | (626) 533 7036 | HVAC | Riverside · Riverside County | — | — |
| Aire Serv Of Palm Desert | Milen Georgiev Kosev | — | (760) 373 0760 | HVAC | Palm Desert · Riverside County | — | — |
| Aire Serv Of Temecula | Douglas Troy Myers | — | (708) 651 2580 | HVAC | Temecula · Riverside County | — | — |
| Airetech A/c & Heating | Thomas James Jr Page | — | (951) 926 1002 | HVAC | Perris · Riverside County | — | — |
| Airflo Air Conditioning LLC | Adam Nathaniel Kaidin | — | (760) 285 6511 | HVAC | Palm Desert · Riverside County | — | — |
| Airflow Comfort Heating And Cooling | Arman Yazdani | — | (858) 695 4270 | HVAC | Winchester · Riverside County | — | — |
| Airflow Solutions Air Conditioning & Heating INC | Orlando Javier Ruvalcaba Verduzco | — | (951) 722 5883 | HVAC | Moreno Valley · Riverside County | — | — |
| Airgon Air Conditioning And Heating | Airgon Air Conditioning And Heating | — | (760) 519 9318 | HVAC | Lake Elsinore · Riverside County | — | — |
| Airkraft Heating And Cooling | Kyle Dean Outlaw | — | (714) 815 8811 | HVAC | Murrieta · Riverside County | — | — |
| Airoflow Concrete Solutions INC | Brian Robert Lywandowsky | — | (530) 524 7525 | Other | Norco · Riverside County | — | — |
| Aironics - Refrigeration Air-conditioning & Heating | Adam Tri-phong Lau | — | (949) 415 8676 | HVAC | Corona · Riverside County | — | — |
| Airplus Of California INC | Shannon Lynn Nielsen | — | (951) 739 9501 | HVAC | Corona · Riverside County | — | — |
| Airsmiths INC | Roland James Smith | office@airsmiths.com | (951) 737 7421 | HVAC | Corona · Riverside County | — | — |
| Airtec Heating And Cooling | Airtec Heating And Cooling | — | (951) 690 6034 | HVAC | Riverside · Riverside County | — | — |
| Airtech Brothers | Airtech Brothers | — | (626) 757 5484 | HVAC | Jurupa Valley · Riverside County | — | — |
| Airtech Industries INC | Eric Christopher Weber | — | (951) 699 3143 | Other | Temecula · Riverside County | — | — |
| Airtegrity INC | Michael Jr Garcia | — | (760) 501 5365 | HVAC | Coachella · Riverside County | — | — |
| Airtight Air INC | Ryan William Coppens | — | (951) 677 6928 | HVAC | Murrieta · Riverside County | — | — |
| Airworks | Michael Lyle Duty | — | (951) 302 7222 | HVAC | Murrieta · Riverside County | — | — |
| Aj Construction And Plumbing | Anthony Jay Jones | — | (909) 240 6564 | GC, remodel, ADU | Eastvale · Riverside County | — | — |
| Aj Custom Construction INC | Juarez Jaime | — | (951) 719 9417 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Aj Pool Plumbing INC | Beltran Ricardo Alvarado | — | (760) 296 2064 | Pool | Indio · Riverside County | — | — |
| Aj Roofing | Vincent Morales Ball | — | (951) 415 3924 | Other roofers | Corona · Riverside County | — | — |
| Aj Roofing Const LLC | Juarez Alejandro | — | (951) 830 9420 | Other roofers | Perris · Riverside County | — | — |
| Aj Tile And Stone | Juan Osvaldo Armenta Perea | — | (619) 781 5136 | Other | Hemet · Riverside County | — | — |
| Ajb Heating And Air Conditioning | Jaime Garcia | — | (951) 807 1399 | HVAC | Moreno Valley · Riverside County | — | — |
| Ajg Builders INC | Angel Jesus Guardado | — | (951) 323 7694 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Ajj Electric INC | Jesus Alfredo Pinon Nunez | — | (951) 334 1450 | Electricians | Riverside · Riverside County | — | — |
| Ajp Construction INC | Rogel Alfredo Aguilar | — | (209) 665 6446 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Ak Craftsman | Austin Francis Kirar | — | (708) 372 8656 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| Ak Electric | Oscar Ramon Gomez | — | (951) 395 0006 | Electricians | Riverside · Riverside County | — | — |
| Ak Electrical Services | Robert Lee Griffin | — | (951) 280 0269 | Electricians | Corona · Riverside County | — | — |
| Akela Pest Control | Akela Pest Control | maindeveloper.blue@gmail.com | (951) 977-9651 | Pest, tile roofs | Riverside · Riverside County | — | — |