| Business | Phone |
| A-1 National Refrigeration Htg 585 E 45th Ave, Gary 46409 | (219) 769-6100 |
| Jay's Mechanical Contractors 4227 E 6th Pl, Gary 46403 | (219) 938-1707 |
| Mechanical Concepts Inc 750 S County Line Rd, Gary 46403 | (219) 938-1941 |
| Moore's Heating & Cooling Gary 46408 | (219) 985-1082 |
| People's Comfort Heating & Ac 460 Mount St, Gary 46406 | (219) 949-8700 |