| Business | Phone |
| Electric Co 2740 Calumet Ave, Hammond 46320 | (219) 932-0680 |
| Graybar Electric Co 6445 Indianapolis Blvd, Hammond 46320 | (219) 844-7800 |
| Plumbing & Electric Supply Co 642 Burnham Ave, Hammond 46320 | (219) 932-1225 |
| Westco Distribution Inc 7020 Grand Ave, Hammond 46323 | (219) 844-5076 |