| Business | Phone |
| Air Control 2124 Strauss Dr, Fairfield 94533 | (707) 718-3722 |
| Air Factory 5066 Lakeview Cir, Fairfield 94534 | (707) 864-0318 |
| Air Quality Sciences 1455 Oliver Rd, Fairfield 94534 | (707) 399-9110 |
| Knoll Systems Corp Fairfield 94533 | (707) 437-0577 |