| Business | Phone |
| Thermo Cool Products 609 W Main St, Mandan 58554 | (701) 663-9607 |
| Dakota Air Systems 3109 Memorial Hwy, Mandan 58554 | (701) 663-2929 |
| Quality Refrigeration Heating 210 10th Ave Nw, Mandan 58554 | (701) 355-0059 |
| Mark's Heating & Cooling Inc 914 16th St Ne, Mandan 58554 | (701) 663-2585 |