Warning Signs
AC Making Strange Noises?
Different sounds indicate different problems. Here's what your AC might be telling you.
Get Same-Day DiagnosisSound Types & What They Mean
Banging or Clanking
UrgentCall Pro
Loose or broken parts inside compressor or blower.
Action: Turn off AC immediately. Loose parts can cause major damage. Call for service.
Squealing or Screeching
ModerateCall Pro
Belt slipping, motor bearing issues, or fan problems.
Action: Professional inspection of blower motor and fan assembly.
Grinding
UrgentCall Pro
Motor bearings failing or compressor issues.
Action: Turn off AC to prevent further damage. Schedule immediate service.
Buzzing
ModerateCall Pro
Electrical issues, loose parts, or debris in outdoor unit.
Action: Check for visible debris. If none, call for electrical inspection.
Hissing
UrgentCall Pro
Refrigerant leak or high internal pressure.
Action: Turn off AC immediately. Hissing indicates refrigerant leak. Call for service.
Clicking
LowCall Pro
Normal at startup, but continuous clicking indicates relay or thermostat issues.
Action: If clicking is continuous, professional diagnosis of controls needed.
When to Call a Professional
- Any banging or grinding sounds—indicates component failure
- Hissing sounds—possible refrigerant leak
- Noise accompanied by burning smell
- Sounds getting progressively louder
- Noise combined with poor cooling
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Exp. June 30, 2026