Home cooling and thermostat troubleshooting

The recovered conversation separates house heat gain from an HVAC performance problem. The useful pattern is an indoor temperature rise during the hottest afternoon hours while the AC runs continuously, with an unused attic fan and questionable airflow as the first things to investigate. The record keeps the checks ordered so a filter, condenser, window-heat, attic, or airflow issue is not confused with a refrigerant or equipment diagnosis.