It is natural for your air conditioner to make some noise when running—that just means it is working. Though, older units are typically louder than newer ones, all air conditioning noises are not equal.
As your air conditioner ages, any sound coming from it can still be a bother. If your air conditioner is generating an unusual sound, that could mean trouble. So rather than risking damage to you or your system by poking around the unit yourself, play it safe and call a professional to come check it out for you.
To prevent any of these potential issues, we at Cool Works recommend getting a maintenance inspection at least once a year to determine the health of your air conditioner. According to Energy Star,“ proper maintenance by a trained professional technician is one of the most important steps you can take to avoid future issues.”
Air Conditioner Common Noises
We have listened to our fair share of unusual thrums, murmurs, and buzzes, coming from air conditioners throughout the years, so below is a list of the most common noises we have found and the problems they can indicate.
A distinct rattle could be the cause of a loose bolt, screw, fastener, or another small part that fell into the vents. It could also be your compressor or an issue more serious than a loose part. If you suspect any of these, you need one of our skilled technicians to look into the problem further.
A grinding or noticeable rubbing or scraping sound most likely means there is a problem with one of the fan motors. It’s also possible the noise can be originating from a worn bearing or a loose or damaged belt. This is sometimes more commonly associated with older air conditioning systems.
A popping noise might be coming from your air ducts when your air conditioner turns on and off. This normally indicates a problem with your ductwork and not necessarily a problem with your central air.
If you hear a hissing, it is likely this type of noise is emitting from within your ductwork, so let one of our professional technicians take a closer look. We can identify the source and tell you if there is a bigger issue involved, such as a refrigerant leak, where a more thorough repair would be needed.