What Causes the Engine to Sound Louder When the Air Conditioner is On?

1 Answers
VonIris
07/29/25 12:33am
It is normal for the engine to sound louder when the air conditioner is turned on. Running the air conditioner increases the engine load and causes the fan to operate at high speed, resulting in louder noise. Functions of the air conditioner: 1. Achieves cooling effect through the continuous phase-change cycle of the refrigerant; 2. Removes dust, odors, smoke, and toxic gases from the air inside the car, making the interior air fresher, and humidifies the air to increase relative humidity; 3. Uses engine coolant, waste heat, or heat generated by a burner as a heat source for heating. The heater warms the air, which is then blown into the car by the blower, raising the temperature at the air vents for heating purposes.
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