| Business | Phone |
| Safe Appliance 3393 Clayton Rd, Concord 94519 | (925) 687-6226 |
| Acs 5151 Port Chicago Hwy, Concord 94520 | (925) 687-4328 |
| Air Repair Heating & Air Cond 3185 San Ramon Rd, Concord 94519 | (925) 685-1881 |
| Aldrich Air 5016 Forni Dr, Concord 94520 | (925) 676-1515 |