2011 Honda Odyssey Owner's Manual - Page 222

Vents, Heating, and A/C Fan Control Turn the dial clockwise to increase the fan speed and airflow. Turn the dial counterclockwise to decrease them. Temperature Control Turning this dial clockwise increases the temperature of the airflow. Air Conditioning (A/C) Button This button turns the air conditioning on and off. The indicator in the button is on when the A/C is on. Recirculation Button When the indicator in the button is on, air from the vehicle's interior is sent throughout the system again. When the indicator is off, air is brought in from the outside of the vehicle (fresh air mode). Features The outside air intakes for the heating and cooling system are at the base of the windshield. Keep this area clear of leaves and other debris. The system should be left in fresh air mode under almost all conditions. Keeping the system in recirculation mode, particularly with the A/C off, can cause the windows to fog up. Switch to recirculation mode when driving through dusty or smoky conditions, then return to fresh air mode. 2011 Odyssey 219