Dehumidify the Car Interior with Cold Air or Hot Air?
2 Answers
When the air inside the car is humid, you should turn on the air conditioner to blow cold air. Below is a related introduction to the functions of car air conditioning: 1. Temperature Adjustment: This is the main function of car air conditioning. In summer, the cold air produced by the refrigeration system cools the interior of the car; in winter, except for large commercial vehicles that use independent combustion heaters for heating, other vehicles basically utilize the residual heat of the car for heating. 2. Humidity Adjustment: Humidity greatly affects the comfort of passengers inside the car. The humidity inside the car should generally be maintained between 30% and 70%. Ordinary car air conditioners do not have the function of adjusting the interior humidity. Only by using ventilation devices or the integrated heating and cooling air conditioners found in high-end luxury cars can humidity be adjusted. 3. Airflow Adjustment: The speed and direction of airflow significantly impact human comfort. If the air blows directly, the speed should be limited to a certain range when the temperature is suitable. The speed can be appropriately adjusted based on the passengers' living environment, age, health condition, and habits regarding cold and heat. 4. Air Purification: The quality of the air inside the car is an important guarantee of comfort.
As a seasoned driver frequently navigating the humid southern regions, I've mastered the essential dehumidification techniques. The go-to method is using the cold air conditioning, as the AC evaporator condenses moisture like a refrigerator, directly extracting water from the air. In summer, activating the AC cooling mode is most effective for dehumidification—just remember to enable the recirculation mode to prevent external humidity from entering. For winter fogging issues, setting the AC temperature around 26°C while keeping the AC on achieves dehumidification without excessive cooling. I've also found that turning off the AC and switching to external circulation before parking helps dry the air ducts, preventing mold growth. Regularly replacing the cabin air filter is crucial too, as a damp filter can ironically worsen humidity levels.
