| Business | Phone |
| Skiba Heating & Cooling 411 S Fourth St, Alpena 49707 | (989) 356-2578 |
| Alpena Furnace Alpena 49707 | (989) 464-5394 |
| Badgero Heating 2737 Emmet St, Alpena 49707 | (989) 354-4736 |
| Zolnierek Heating & Cooling Co 3135 French Rd, Alpena 49707 | (989) 354-0912 |
| Tim's Heating & Cooling Inc 1801 King Settlement Rd, Alpena 49707 | (989) 379-4720 |
| Henry Heating 1659 Lake Winyah Rd, Alpena 49707 | (989) 356-1046 |
| J E Johnson Inc Plumbing & Htg 318 Cavanaugh St, Alpena 49707 | (989) 354-2091 |
| Lakeshore Plumbing & Heating 1587 M 32 W, Alpena 49707 | (989) 354-7574 |
| Quality Heating & Cooling 1010 River St, Alpena 49707 | (989) 356-4144 |