| Business | Phone |
| Avonda Air Systems Inc 1879 Williston Rd 1, South Burlington 5403 | (802) 865-9900 |
| Control Technologies Inc 78 Ethan Allen Dr, South Burlington 5403 | (802) 860-1700 |
| Mountain Air Systems Inc 75 Ethan Allen Dr 301, South Burlington 5403 | (802) 862-6199 |
| Governed Air Of Vermont Inc 48 E Terrace, South Burlington 5403 | (802) 658-6355 |