| Business | Phone |
| A & Rb Refrigeration Alton 62002 | (618) 465-2751 |
| B & W Heating & Cooling Inc Alton 62002 | (618) 465-3322 |
| Barrett Heating & Cooling Inc 500 Belle St, Alton 62002 | (618) 465-3731 |
| Bergesch Htg & Cooling 8116 Wolf Rd, Alton 62002 | (618) 259-4620 |
| Country Aire 3910 Torch Club Rd, Alton 62002 | (618) 259-7245 |
| Den-Son Cooling & Htg Alton 62002 | (618) 465-5977 |
| Randy's Heating & Air Cond 5467 Seminary Rd, Alton 62002 | (618) 465-8775 |
| Frankford Heating & Cooling 2610 Sanford Ave, Alton 62002 | (618) 463-0906 |
| Gene's Appliance Ac & Heating 1412 Central Ave, Alton 62002 | (618) 462-6732 |