| Business | Phone |
| Effingham Heating & Air Inc 13247 N 1000th Rd, Effingham 62401 | (217) 868-2665 |
| Jansen's Heating & Cooling 11984 E Us Highway 40, Effingham 62401 | (217) 347-5223 |
| Merz Air Conditioning & Htg 509 S Willow St, Effingham 62401 | (217) 342-2323 |
| Merzheating & Ac 509 S Willow St, Effingham 62401 | (217) 342-2787 |
| New York Blower Co 1304 W Jaycee Ave, Effingham 62401 | (217) 347-3233 |
| Probst Refrigeration & Heating 410 W Fayette Ave, Effingham 62401 | (217) 342-6441 |
| Steffen Heating & Air Cond Inc 15214 E 1800th Ave, Effingham 62401 | (217) 342-2062 |