AC Making Noise in NJ? What Rattling, Banging, or Screeching Means

If your AC is making new or loud noises, it is time to pay attention. In North NJ, these issues often show up during the first few hot weeks. Some are quick fixes, others are urgent.

What the noises usually mean

• Rattling: loose panels, debris in the outdoor unit, or a failing fan blade
• Banging: compressor issues or a loose motor mount
• Screeching: worn belt or motor bearing problems
• Clicking: electrical relay or capacitor issues
• Buzzing: loose wiring or a failing contactor

What you can check safely

• Turn the system off and check for loose panels
• Clear leaves and debris around the outdoor unit
• If the noise is inside, check for a clogged filter

If the noise continues, do not keep running the system.

When to call a professional

• Any metal-on-metal sound
• Loud buzzing from the outdoor unit
• The system shuts off after a loud bang

Air2Cool offers same-day AC repair across Morris County. Call (201) 787-5657 or request service.

Also see: Preventative Maintenance