Should You Use Recirculation or Fresh Air Mode for Car AC in Summer?

1 Answers
AmyAnn
07/29/25 9:50am
In terms of cooling efficiency, it's better to use recirculation mode for car AC in summer. Here are details about recirculation and fresh air modes: 1. Working Principle: Recirculation mode means the air inside the car is heated or cooled and then recirculated within the cabin; Fresh air mode brings outside air into the car after heating or cooling, achieving air exchange between interior and exterior. 2. Usage Methods: When initially turning on AC or heater, first activate recirculation mode to quickly cool down or warm up the cabin. After temperature stabilizes, appropriately switch to fresh air mode for ventilation. Avoid fresh air mode when outside air quality is poor (e.g., heavy traffic with exhaust fumes or underground parking). On highways, never open windows - use fresh air mode instead. When feeling stuffy inside with good outdoor air quality, immediately switch to fresh air mode for ventilation.
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