How Often Should Car Air Conditioning Refrigerant Oil Be Changed?
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Car air conditioning refrigerant oil generally needs to be changed once a year. The refrigerant oil in a car serves the dual purpose of cooling and lubrication. During operation, it helps lower temperatures and reduces wear and tear on internal components. Below are the functions of car air conditioning: 1. Temperature Regulation: This is the primary function of car air conditioning. In summer, the cooling system generates cold air to lower the cabin temperature; in winter, most vehicles utilize residual heat for heating, except for large commercial vehicles, which often use independent combustion heaters. 2. Humidity Regulation: Humidity significantly impacts passenger comfort. Cabin humidity should ideally be maintained between 30% and 70%. Standard car air conditioning systems do not regulate humidity; this is only possible with advanced luxury vehicles equipped with integrated heating and cooling systems or ventilation devices. 3. Airflow Regulation: The speed and direction of airflow greatly affect comfort. Direct airflow should be limited to a certain range when temperatures are optimal, and the speed can be adjusted based on passengers' living environments, age, health conditions, and temperature preferences. 4. Air Purification: Cabin air quality is crucial for ensuring comfort.