![]() ![]() If you hear a loud whining noise, it can be because of two reasons, i.e., bad bearings or a damaged serpentine belt. It has to bear constant stress and tension every time you operate the car AC hence, it can get damaged in time.Ĭheck the serpentine belt, and if you find it damaged, then it’s better to replace it with a new one. The life span of the belt is usually 100,000 miles. The compressor connects to the engine by belt. The next reason can be because of the worn serpentine belt. If you find them loose, then tighten them. Try to supervise all the bolts and screws of the compressor. So, try to lubricate the shaft from time to time.Īlso, loose bolts and screws are another reason you may hear a rattling sound. Low or less oil on the compressor shaft can be the reason for producing noise. It seems as if something is rubbing against the compressor. Rattling NoiseĪ rattling noise is the next compressor noise you may hear when the car is idle. Replace these parts if they are poorly damaged to resolve the problem. But if the fan and blower are not functioning properly, then take the vehicle to the nearest mechanic. You can fix the issue easily by removing paper or debris from the fan. Sometimes paper or any derbies gets stuck inside the fan and causes such loud whirring noise. There can be issues with the blower, fan, or outdoor unit. If the noise becomes louder, there must be an issue with the car’s mechanical components, which is a matter of concern. Although the sound is normal, every car owner must consider the whirring sound. The noise comes because the engine motor and fan are working together. The whirring sound from the AC compressor during idle conditions is normal. What Are The Different Types of Noises An AC Compressor Makes? #1. But if you hear other noises like humming, squealing, rattling, or a loud whining sound from the Ac compressor, then it is something unusual, and you need to take your vehicle to the mechanic. You don’t need to worry if you hear whirring noise from the AC compressor when the car is idle. ![]() There are numerous types of air compressor noise at idle conditions, like whirring, rattling, squealing, humming, and loud whining. Its primary work is to compress the refrigerant at low pressure and low temperature to high pressure and high temperature. The compressor is an essential component of the car air conditioning system. But if it produces some strange loud noise, there is something wrong with your car.Īlso read – what should you do if you find that air only blows through defrost vents Different Types of AC Compressor Noise At Idle Remember, turning on the AC puts a lot of load on the engine, so it is normal for the compressor to produce noise. The refrigerant exchanges heat with the warm air inside the car cabin thus, the blower blows cold air. Now the refrigerant passes into the evaporator, which is a heat exchanger. Next, the refrigerant passes into the expansion valve, where its temperature is reduced drastically. But there will be no change in pressure and temperature in this case. It then enters into the condenser, where the refrigerant is condensed into liquid form. The compressor helps compress the refrigerant, i.e., it helps in increasing the temperature and pressure of the refrigerant. ![]() So, do you know about the working of AC compressors? Well, many car owners and occupants inside the car are unaware of the function of the compressor. The moment you turn on the AC, you activate the compressor. You simply turn your car AC whenever you feel hot while driving and get cool, refreshed air from the vents. Also read – AC Pro Gauge Not Working? Have you checked these reasons? What Is An AC Compressor? ![]()
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