| Business | Phone |
| Cafco Filter Sales & Svc 1004 Kieley Pl, Cincinnati 45217 | (513) 242-3400 |
| Clean Air Concepts 11449 Deerfield Rd, Cincinnati 45242 | (513) 489-4440 |
| Lanora's Freshness 1820 Brewster Ave, Cincinnati 45207 | (513) 731-4194 |
| Nicholas Hubbard Air Purifier 1354 Riviera Pl, Cincinnati 45231 | (513) 729-1476 |
| United Air Specialists Inc 4440 Creek Rd, Cincinnati 45242 | (513) 891-0400 |