| Business | Phone |
| American Boiler Co 2424 Deer Park Blvd, Omaha 68105 | (402) 346-8100 |
| C G Johnson Boiler Co 1445 N 11th St, Omaha 68102 | (402) 341-0541 |
| Plibrico Sales & Svc Inc 2815 N 11th St, Omaha 68110 | (402) 345-3223 |
| Johnson Co 1201 S 4th St, Omaha 68108 | (402) 342-1777 |