Homeowners can't diagnose why their house feels uncomfortably hot despite having a working AC unit

Homeowners experience persistent indoor heat and discomfort during summer months, but their AC systems appear to be functioning normally, leaving them confused about the root cause and unable to fix the problem. Current solutions fail because people default to blaming their AC unit and calling expensive HVAC technicians, when the actual culprits are often preventable factors like poor insulation, window heat gain, or air leaks that require different expertise to identify and address.