THIS VIDEO IS IN RELATION TO POOR AIRFLOW FROM DASH VENTS . THE HIGHER THE BLOWER SETTING THE WORSE IT CAN SEEM . HOT OR COLD TEMP SETTINGS DONT CHANGE FLOW MUCH . THE VEHICLE SHOULD ALWAYS BEEN DIAGNOSED AND REPAIRED BY A PROFESSIONAL . ONE WAY TO INSPECT FOR A CLOGGED AC EVAPORATOR IS TO REMOVE BLOWER MOTOR RESISTOR AND USE A MIRROR OR BORESCOPE .