| Business | Phone |
| A-Plus Heating & Cooling Inc Champaign 61820 | (217) 359-3750 |
| Abc Heating & Air Cond 1528 Windsor Rd, Champaign 61821 | (217) 352-5400 |
| Air Quality Specialists Champaign 61820 | (217) 359-7733 |
| All Seasons Heating & Air Cond 202 N East St, Champaign 61820 | (217) 356-4855 |
| Ayers Repairs Co 2703 Woodridge Rd, Champaign 61822 | (217) 841-3633 |
| Boma Electric 505 N Harris Ave, Champaign 61820 | (217) 359-7637 |
| Champaign Heating & Air 1710 1/2 W Hensley Rd, Champaign 61822 | (217) 355-5022 |
| Chief Heating & Air Cond 520 N Hickory St, Champaign 61820 | (217) 352-5211 |