The Hidden Risks of Overusing Recirculation
Despite its advantages, recirculation should never be left on permanently.
Foggy Windows
In cold or rainy conditions:
- Moisture from breathing builds up
- Humidity increases rapidly
- Windows fog more easily
Fresh air helps remove moisture and maintain clear visibility.
Reduced Oxygen Levels
On long drives:
- Oxygen levels inside the cabin slowly drop
- Carbon dioxide levels rise
- Drivers may experience fatigue, headaches, or drowsiness
Fresh airflow helps maintain alertness—especially important during highway driving.
