Why is My Central Air Conditioner Making Loud Buzzing, Squealing or Humming Noise in Eldorado, NV?

When the hot Las Vegas summer is upon us we want to make sure our air conditioners will work correctly. Our homes are where we will find refuge on those hot summer days, but if it’s making a strange noise it won’t be so relaxing!

Air Conditioner Makes Noise Starting Up, While Running or After Shut Off

Air conditioners make noise, but you need to know what’s normal and what’s not because different sounds can mean different issues.
Squealing AC noise. If you hear a high-pitched squealing noise coming from your air conditioner, it’s most likely the belt connecting the motor to the blower has slipped or it’s the bearings on the condenser fan’s motor. Newer air conditioners don’t use a belt system to operate so chances are if you have an older unit, it’s probably the problem. If it is this belt, you’ll hear the noise inside and outside your home. The belt will need to be replaced to solve the problem. If a newer unit is making this noise, it’s likely the bearings on the condenser fan’s motor. New air conditioning units use direct-drive motors that don’t use belts. This system pulls air across the condenser coils in the compressor. So, with newer air conditioners you will hear squealing or grinding coming from the outdoor unit. This indicates that the motor needs replacement. When you hear a squealing noise coming from your air conditioner you need to call professionals right away to fix the problem.
AC Buzzing sound. A loud buzzing noise coming from your air conditioner is an indication that it’s malfunctioning. This happens when parts become loose, missing or broken feet or refrigerant leaks. This noise also indicates that the compressor may be malfunctioning. In order for your home to stay cool in the summer all the parts of your air conditioner need to work together. If one part gets loose, it will put extra stress on the other parts. When the other parts deal with too much stress the unit will start to make a buzzing sound. Call for ac repair before too much damage is caused that can cost more money. The compressor of the air conditioner sits on rubber feet called “isolation feet”. These feet are at the base of the air conditioner and can start to crack and breakdown over time. The compressor will lose balance and start to make a buzzing noise when you use it. Air conditioners can also freeze up when they are cooling your home. It sounds strange to hear, but it can happen. If refrigerant starts to leak, it can cause the buzzing sound. If the compressor is malfunctioning it can cause a buzzing sound. The compressor pressurizes and cools the refrigerant down to cool your home. The buzzing sound means that the compressor isn’t working properly. It can also indicate that the electrical voltage of the unit isn’t right.

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When you hear unusual sounds coming from your air conditioner, it’s best to call professionals to determine the problem and fix it. To learn more about the noises coming from your air conditioner contact Air Supply Heating & Air Conditioning.