Home › Top 4 Heating and Cooling Services in Alton, Illinois Find best Heating and Cooling Services in Alton, Illinois, with all necessary contact information, including addresses, phone numbers, working hours, map locations, and website links. Ty's Heating & Cooling LLC US, Alton, IL 62002705 Park Dr unit D Assured Heating and Cooling of Illinois US, Alton, IL 62002421 Belleview Ave Gene's Appliance AC & Heating US, Alton, IL 620021412 Central Ave Barrett Heating & Cooling, Inc. US, Alton, IL 62002500 Belle St