| Business | Phone |
| Bel Clair Heating Air Cond 504 S 17th St, Belleville 62226 | (618) 257-2524 |
| Bel-Air Heating & Cooling Inc 2210 Trowbridge Ct, Belleville 62221 | (618) 277-0582 |
| C & D Mc Call's Htg & Cooling Belleville 62226 | (618) 222-0363 |
| Cahrco 3 Aero Estates Ct, Belleville 62223 | (618) 277-2216 |
| Sigman Heating & Cooling 6200 Old Saint Louis Rd, Belleville 62223 | (618) 234-4343 |
| Dempsey's Heating & Cooling 1725 Duncan St, Belleville 62226 | (618) 277-0878 |
| Emergency Heating & Air Cond 709 W Harrison St, Belleville 62220 | (618) 281-0255 |
| Jones Heating & Cooling Belleville 62220 | (618) 236-6544 |
| Keil-Forness Comfort Systems 301 N Illinois St, Belleville 62220 | (618) 233-3039 |
| Mike's Heating & Cooling Inc 910 N 2nd St, Belleville 62226 | (618) 667-8106 |