Why Does the Car Air Conditioner Make a Buzzing Sound?
2 Answers
Car air conditioner buzzing sound may be caused by the following reasons: 1. The belt has become loose, causing the air conditioner to buzz. 2. Noise caused by damage to the compressor belt tensioner. 3. Buzzing sound caused by compressor failure. 4. When the external circulation is turned on, there will be a blower sound, and the sound appears in the glove box at this time. 5. Abnormal noise generated by the cold and warm switch inside the panel or the internal and external circulation motor failure. Here is more information about car air conditioners: 1. The car air conditioner is composed of a compressor, condenser, throttle element, evaporator, fan, and necessary control components. It is an air conditioning system used to adjust the temperature and humidity inside the car and provide a comfortable environment for passengers. 2. When the A/C switch is turned on, the engine drives the compressor to start working, forcing the refrigerant to circulate in the sealed air conditioning system. The compressor compresses the gaseous refrigerant into high-temperature and high-pressure refrigerant gas and then discharges it from the compressor.
It's quite common for car air conditioners to make a hissing sound, and I've encountered it many times myself. Often, this sound is just the normal flow of refrigerant, like running water. However, if it's accompanied by vibrations or the noise becomes louder, it could indicate a slight leak or blockage in the piping. Another common issue is fan blade friction. Over time, the fan blades can accumulate dust or become deformed, causing them to rub against the casing and produce a hissing sound. It might also be due to a loose compressor belt, which can make noise when accelerating. I suggest you try rolling down the window to listen. If the sound only appears when the air conditioner starts, it's best to visit a 4S shop early to avoid sudden failure, especially on hot driving days. Also, check if the air filter is dirty, as a clogged filter can increase noise. In short, don't panic, but don't ignore it either.
