| Business | Phone |
| Controlled Comfort Inc 8635 Louisiana Pl, Merrillville 46410 | (219) 795-9505 |
| Harvey & Sons Heating & Ac Po Box 10202, Merrillville 46411 | (219) 764-0954 |
| Rearick's Heating & Air Cond 6521 Broadway, Merrillville 46410 | (219) 769-6411 |
| Rearick's Htng & Air Cndtng Merrillville 46410 | (219) 322-1100 |