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Is it normal for a car to lose power when the air conditioning is on?

1 Answers

LeAnthony

07/29/25 12:43pm

Automotive air conditioning systems rely on the engine for power. The engine drives the air conditioning compressor via a belt, and the electrical power for components like the air conditioning blower also comes from the vehicle. Therefore, using the air conditioning increases fuel consumption and places a greater load on the engine, which can result in reduced power output. This is a normal phenomenon. Below are the functions of a car air conditioning system: 1. Temperature regulation: This is the primary function of car air conditioning. In summer, the cooling system produces cold air to lower the cabin temperature; in winter, except for large commercial vehicles that use independent combustion heaters, most vehicles utilize waste heat from the engine for heating. 2. Humidity regulation: Humidity significantly affects passenger comfort. The ideal cabin humidity should be maintained between 30% and 70%. Standard car air conditioning systems do not regulate humidity; this can only be achieved through ventilation or advanced luxury vehicles equipped with integrated heating and cooling systems. 3. Airflow regulation: The speed and direction of airflow greatly impact comfort. When air is blowing directly, the speed should be limited to a certain range at appropriate temperatures. The airflow speed can be adjusted based on passengers' living environments, ages, health conditions, and temperature preferences. 4. Air purification: The quality of cabin air is crucial for ensuring comfort.

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