| Business | Phone |
| Comm Air Mechanical Svc 160 Constitution Dr # C, Menlo Park 94025 | (650) 261-1500 |
| Critchfield Mechanical 4055 Bohannon Dr, Menlo Park 94025 | (650) 838-0931 |
| Critchfield Mechanical 4085 Campbell Ave, Menlo Park 94025 | (650) 321-7801 |
| Knoll Systems Corp Menlo Park 94025 | (650) 233-1105 |