| Business | Phone |
| Accu-Temp Inc 1504 E Sweet Ave, Bismarck 58504 | (701) 250-6411 |
| Camp Brothers Heating & Ac 1925 Lovett Ave, Bismarck 58504 | (701) 223-4154 |
| Capital Heating & Cooling Bismarck 58501 | (701) 255-4416 |
| Climatech Heating & Air 2432 Laforest Ave, Bismarck 58501 | (701) 527-5722 |
| Comfort Products Distributing 1224 Airport Rd, Bismarck 58504 | (701) 221-3283 |
| Cooling & Heating Unlimited 725 Airport Rd, Bismarck 58504 | (701) 223-8260 |
| Scott's Refrigeration-Heating 3503 Franklin Ave # 3, Bismarck 58503 | (701) 224-8888 |
| River City Heating & Air 2237 Morrison Ave # 4, Bismarck 58504 | (701) 250-8300 |
| Ed's Heating & Air 1222 Continental Ave, Bismarck 58504 | (701) 258-3991 |
| Gordy's Heating & Air 313 Telstar Dr, Bismarck 58503 | (701) 222-0618 |