| Business | Phone |
| Northfield Heating & Cooling 1825 Willow Rd, Winnetka 60093 | (847) 251-2740 |
| Northfield Plumbing & Mech Inc 1749 Harding Rd B, Winnetka 60093 | (847) 441-0881 |
| T H Krejci Plumbing Po Box 8088, Winnetka 60093 | (847) 446-7780 |
| Tempered Living Conditions Inc Winnetka 60093 | (847) 251-6999 |
| V J Killian Co 933 Green Bay Rd, Winnetka 60093 | (847) 446-0908 |
| Elm Heating & Cooling Inc Winnetka 60093 | (847) 441-7113 |
| Jhr Energy Inc 550 W Frontage Rd, Winnetka 60093 | (847) 441-9444 |
| John J Cahill Inc Winnetka 60093 | (847) 446-7966 |
| North Shore Heating & Cooling Winnetka 60093 | (847) 446-2665 |
| Roto-Rooter Plumbing & Drain Winnetka 60093 | (847) 784-1580 |
| Thornton Heating Winnetka 60093 | (847) 446-9902 |