| Business | Phone |
| Wohlers Heating & Air Cond 351 Progress Dr, Cottage Grove 53527 | (608) 249-3407 |
| Pure Air Ventilation Llc 585 N Main St # 2, Cottage Grove 53527 | (608) 839-8060 |
| High Tech Heating & Air Cond 2395 County Road Bb, Cottage Grove 53527 | (608) 221-8333 |