| Business | Phone |
| Air First Mechanical Inc Marengo 60152 | (815) 568-0628 |
| Air Tech Svc 20312 W Coral Rd, Marengo 60152 | (815) 568-5377 |
| Amk Air Conditioning & Htg 8815 Wildrose Ln, Marengo 60152 | (815) 568-3785 |
| Carr's Air Maintenance Ltd Po Box 408, Marengo 60152 | (815) 568-6107 |
| Schwartz Heating 1717 Deerpass Rd, Marengo 60152 | (815) 568-5772 |