A robust air conditioning system is an excellent way to be comfortable during hot summers. However, if it isn’t functioning correctly, it may not be very pleasant. Understanding some potential causes of your AC compressor rattling noise is essential since it’s one of the early warning signals of a malfunction.
AC Compressor Making Rattling Noise
Most households are accustomed to hearing the hum of an AC compressor noise. Therefore, any new sounds that break up the routine drone are warning indicators for possible system problems. In addition, the nature of the sound might provide information about what might be wrong with the cooling system.
The many noises that you could hear and what they signify are listed below:
- Banging, Rattling, or Clunking
Banging, rattling, or clunking noises frequently signify loose components when operating the cooling system. For example, the AC compressor discourages noise because it isn’t kept firmly in place if a bolt comes free and the compressor is moving. If applicable, tightening the connection is the first step in removing the noise.
It is better to replace the compressor to resolve this problem. It is typically simpler to replace the compressor than to try to fix the loose internal component because of how this vital component.
The common source of a clicking sound is a blockage of some kind. Such noise happens when branches and other external debris enter the appliance and stop internal parts from working correctly. Internal components may become damaged due to these factors and create odd noises while the system runs, such as the compressor fan blades crashing into a bent fan screen.
You must remove debris from the condenser unit, and any damaged components must function properly. For example, falling debris likely damaged the outer parts of the machine, which need to be replaced. If a part is beyond repair, you may require component replacement.
A failing relay or control within the external unit is another problem that produces a clicking sound. Relays and controls are used to find performance problems, then fixed or replaced to restore functionality and eliminate the clicking sound your outdoor air conditioner produces.
Do you hear high-pitched hissing sounds coming from your air conditioner? It can be a sign of two different yet dangerous problems. Other frequent AC sounds might give away the problem’s origin and hissing.
How To Fix a Rattling AC Unit
You need to stop the AC compressor vibrations. You must thus secure it in place. If you have a mini-split, you should examine the AC compressor by opening the exterior unit (it like a bit like a car battery).
A plastic platform, for instance, might split and cause a rattling noise when AC is on. First, check the platform the AC compressor is on. To reduce the pulsating sound and lessen the vibrations, you may swap it out with a hardwood platform. You can add additional support to prevent the AC compressor from shuddering; tiny rubber isolation feet are typically used to reduce vibrations and quiet pulsing sounds.
To access the AC compressor in window AC systems, remove the rear panel that faces the outside. If it vibrates, make sure it’s fixed in place. If the little rubber isolation feet often found on compressors are missing or broken, the window AC compressor makes a rattling noise.
You may employ support to prevent it from shaking and making pulsing sounds. It can be underpinned with a piece of wood or tightening the screws holding the compressor in place.
If they create noise, try to wriggle the refrigerant lines away from solid objects like walls. The important point is that they are not colliding with anything for them to continue vibrating. That would cause the noise to pulse in a set pattern.
Although AC compressor rattling noise is a vexing issue, it is frequently an indication of more severe problems. Always call a professional to fix your air conditioner correctly to ensure that you are never left without air conditioning when needed.