| Business | Phone |
| Economy Heating & Air Cond 807 Lindell Ave, Hannibal 63401 | (573) 221-7117 |
| Lampton Refrigeration & Htg Co 111 N Levering Ave, Hannibal 63401 | (573) 221-3378 |
| Mike Durr Heating & Cooling 300 Hummingbird Ln, Hannibal 63401 | (573) 221-2032 |
| Schutjer Heating & Cooling 2828 Market St, Hannibal 63401 | (573) 221-6555 |
| Scott Miller Heating & Air 8850 Highway W, Hannibal 63401 | (573) 406-8451 |
| Superior Heating & Air Cond 3526 Market St, Hannibal 63401 | (573) 221-0600 |