| Business | Phone |
| Air Care Inc 1302 N Federal Ave, Mason City 50401 | (641) 423-1594 |
| Comfort Inc 20 N Kentucky Ave, Mason City 50401 | (641) 423-2133 |
| Four Seasons Heating & Cooling 127 S Hampshire Pl, Mason City 50401 | (641) 424-5772 |
| Sure Service Heating & Ac 208 10th St Nw, Mason City 50401 | (641) 423-4244 |