| Business | Phone |
| Blair Heating & Cooling 1006 Hunter Ln, Potosi 63664 | (573) 438-2698 |
| Jarvis Heating & Cooling 102 W Jefferson St, Potosi 63664 | (573) 438-1406 |
| Potosi Heating & Cooling 401 E High St, Potosi 63664 | (573) 438-9719 |
| Sutton Air Conditioning 14864 S State Highway 21, Potosi 63664 | (573) 438-2104 |