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vehicle’s heating, ventilation, and air-conditioning system ( HVAC) generally operates using two basic airflow modes.
- 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 as needed.
Conditioned air is distributed throughout the cabin.
Fresh-air mode continuously brings outdoor air into the cabin, helping replace the air already inside -
the vehicle.
- Recirculation Mode (Recirculation ON)
A motorized flap limits or closes the outside-air intake.
The system reuses air already inside the cabin.
The air is repeatedly cooled or heated by the HVAC system.
This creates
- Recirculation Mode (Recirculation ON)
The Dashboard Button Most Drivers Ignore—And Why It Actually Matters
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