Your vehicle’s heating, ventilation, and air-conditioning system (HVAC) operates in two basic modes:
1. Fresh Air Mode (Recirculation OFF)
- Outside air is drawn into the vehicle
- Air passes through the cabin air filter
- The system heats or cools the air
- Air is distributed throughout the cabin
This mode continuously replaces interior air with oxygen-rich outdoor air.
Vehicle air filters
2. Recirculation Mode (Recirculation ON)
- A motorized flap closes off the outside air intake
- The system reuses air already inside the cabin
- Air is cooled or heated repeatedly
This creates a sealed airflow loop, allowing the HVAC system to work more efficiently under certain conditions.
