1996 Buick Regal Owner's Manual - Page 126

The lever on the passenger's door setsthe temperature for the front seat passenger. The panel has several settings to control the direction of airflow. The indicator light on the button will glow when the button is pressed. OFF: The setting turns the system (including the fan) off. VENT This setting brings in outside air and directs it through the instrument panel outlets. HTR: This setting sends most of the air through the ducts near the floor. The rest comes out of the defroster and side window vents. Press the DUAL button on the system faceso the light on it is lit. Slide the lever on the door toward to raise the W temperature. Slide it toward C to lower the temperature. To allow the driver to setthe temperature, push the DUAL button again. BLEND: This setting allows half of the air to go to the floor ducts and half to the defrost and side window vents. FRONT This setting directs most of the air through the defroster and side window vents. Some of the air goes to the floor ducts. The air conditioning compressor will run automatically in this setting unless the outside temperature is below 40°F (4.5"C).