| Business | Phone |
| All Seasons Heating & Cooling 21 Carlyle Ave, Belleville 62220 | (618) 257-2665 |
| Weinland Refrigeration 62 E Mckinley St, Belleville 62220 | (618) 355-0879 |
| Brunsmann Heating & Refrig Svc 111 High Forest Dr, Belleville 62226 | (618) 277-9725 |
| Eagan Heating & Cooling Inc 7933 Jefferson Rd, Belleville 62221 | (618) 277-7221 |
| Empire Comfort Systems Inc 1401 W E St, Belleville 62220 | (618) 355-0310 |
| Hirth Plumbing & Heating 118 N 16th St, Belleville 62220 | (618) 222-2473 |
| Kiefer & Co 606 N Illinois St, Belleville 62220 | (618) 277-7744 |
| Mueller Heating & Cooling 5921 Gateway Industrial Dr, Belleville 62223 | (618) 233-4411 |
| Maintenance Man Svc & Repair 20 Savannah Ct, Belleville 62221 | (618) 239-9122 |