What Causes the Abnormal Noise When the Car Air Conditioner is On?

[VonQuinn]

Reasons for abnormal noise when the car air conditioner is on: 1. There are debris in the blower fan blades, causing noise when the blades hit the debris during rotation; 2. The blower fan is faulty, with water ingress or lack of lubrication in the rotating shaft, leading to wear and abnormal noise. The car air conditioning system is a device that cools, heats, ventilates, and purifies the air inside the vehicle. Common issues with car air conditioning usage: 1. After using the car air conditioner for a period, a musty or smoky odor may be noticed; 2. When the car air conditioner is cooling or heating, the air blown out from the vents may not be fresh, causing discomfort in the nasal cavity and trachea for passengers.