| Business | Phone |
| Air Connection 525 W Nash St, Spearfish 57783 | (605) 642-1121 |
| Air Systems Mechanical Inc 305 Seaton Cir, Spearfish 57783 | (605) 642-1996 |
| Spearfish Electric & Heating 530 W Jackson Blvd, Spearfish 57783 | (605) 642-2983 |
| Service First 1730 Saint Joe St, Spearfish 57783 | (605) 722-5557 |
| Ochsner Sheet Metal Po Box 244, Spearfish 57783 | (605) 722-1050 |