| Business | Phone |
| Consolidated Equipment Co 230 Northland Blvd # 302, Cincinnati 45246 | (513) 771-0718 |
| Midwest Mechanical Systems Inc 1633 Reading Rd, Cincinnati 45202 | (513) 723-9797 |
| N K Svc 5846 W Fork Rd, Cincinnati 45247 | (513) 598-5502 |
| Ray Heat & Power Co 6300 Colerain Ave, Cincinnati 45239 | (513) 741-7070 |
| Roger Schweitzer & Sons 2129 Freeman Ave, Cincinnati 45214 | (513) 241-4423 |