| Business | Phone |
| Accurate Air Filter Svc 1704 Driftwood Dr, Powell 37849 | (865) 947-3767 |
| Advance Filter Inc 7720 Ashley Rd, Powell 37849 | (865) 947-3505 |
| Exact-Aire Inc 1904 W Emory Rd, Powell 37849 | (865) 947-5811 |
| Kleen Air Inc Po Box 126, Powell 37849 | (865) 947-2063 |