| Business | Phone |
| Burns Heating & Cooling 1620 Madison 209, Fredericktown 63645 | (573) 783-2861 |
| Carver Electric Heating & Clng 211 Redbud Dr, Fredericktown 63645 | (573) 783-7069 |
| Heartland Refrigeration 1157 Madison 257, Fredericktown 63645 | (573) 783-3231 |
| Reed Heat Ac & Electric 1524 Madison 9270, Fredericktown 63645 | (573) 783-8173 |