| Business | Phone |
| Industrial Services-Illinois 717 S 19th St, Mattoon 61938 | (217) 234-6487 |
| Jansen's Heating & Air Cond Mattoon 61938 | (217) 235-5223 |
| Mattoon Heating & Air Cond Inc 4211 Lake Land Blvd, Mattoon 61938 | (217) 235-1772 |
| Merz Air Conditioning & Htg Effingham, Mattoon 61938 | (217) 235-0980 |