4 reasons behind a noisy air conditioner

AC making noise

A noisy air conditioner is very annoying. There can be several reasons behind a noisy air conditioner. The noise from your AC is a clear indication that something is wrong inside the unit that needs repair. Ignoring the noise from the AC may worsen the problem to a point where it cannot be fixed or where fixing it will be an expensive affair.

Reasons behind a noisy air conditioner:

Worn out compressor

Air conditioner compressor is almost always noisy. If the compressor is making an unusual noise or is noisier than it used to be, it might be worn out or wearing out. So if the compressor is more noisy than usual, it’s time you call a PRO and get it repaired.

Faulty Fan

There is one fan at the front end and one fan at the rear end in an air conditioner. For a fan to work properly, it needs to be kept clean and regularly maintained. If the humming or rattling noise from the AC seems to be coming from the fan area, then the fan blades need to be checked. Remove any debris you see on or around the blades. In some cases insulation or other items may fall into the unit and produce noise due to the movement of the blades. If the problem is not debris or dust, then check to see if the blades itself are loose. If so, then blades need to be tightened. Sometimes the fan blades bend slightly and touch the adjacent component of the unit which produces noise.

Faulty fan motors or driver motor

If the air conditioner is noisy the fan motor, also called a dual shaft fan motor, might have gone bad. The fan motor has bearings which needs to be permanently lubricated. Over several years of operation the lubrication may break down making the motor loud and noisy. The  fan motor is usually not repairable and will need to be replaced if it is noisy.

Defective motor belt or bearing

Sometimes your hear a screeching sound from your AC. This noise indicates a bad belt or motor bearing problems. Belts are not normally an expensive repair. Defective motor belt is a common reason behind a noisy  air conditioner.

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Book a case for AC making noise with Mr Right and spare yourself from the horror of a screaming AC.

For more information on AC care and maintenance, refer to Ideas by Mr Right

(Cover Picture Source: www.aircon-servicing.com.sg)

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    Thank you for helping me learn more about why an AC unit makes noise. I didn’t know that the unit usually has two fans that need to be maintained. Knowing that there are more moving parts than I realized, I can see how getting my unit serviced regularly would be a good thing.

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    My aunt has been complaining that her AC is louder than ever and is really annoying. It would be really helpful for her to get a professional down to see it. I’ll be sure to tell her that it might be the compressor that is making weird noises or wearing out.

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    I have whirlwool1.5 window ac ,when i am switch on ac produce sound ,continusly produce sound .sound was gard gard plz help me

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    Thanks for sharing this useful information! Having a Noisy Air Conditioner in your home not let you have a good nights sleep, Which in turn can waste your whole next day. It is so irritating living in such a noise.

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    After working half n hour it makes some erratic noise for 5to 10 seconds and again start working normally.
    Model is Hitachi RAV518HUD

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