What to Do When You Hear Noises from Your AC: A Homeowner’s Guide

As a homeowner, you rely on your air conditioning system to keep your home comfortable year-round. But what happens when your AC starts making strange noises? Don’t ignore those sounds—they could be signs of underlying issues that need attention. In this guide, we’ll explore common AC noises, what they mean, and steps you can take to address them.

1. Buzzing Noise

• Issue: If your AC emits a buzzing sound, there may be an electrical problem.
• Possible Causes:
  • Faulty condenser fan motor.
  • Contactor relay switch issues.
  • Loose wiring.
• Action:
  • Turn off your AC immediately.
  • Contact a professional HVAC technician to assess and repair the electrical issue.

2. Hissing Noise

• Issue: Hissing sounds indicate a refrigerant leak.
• Possible Causes:
  • Leaks from lines or coils.
• Action:
  • Address this promptly—refrigerant is essential for cooling.
  • Consult a professional to diagnose and fix the leak.

3. Squealing Noise

• Issue: Squealing noises may signal a worn-out belt.
• Action:
  • Replace the blower belt promptly.
  • Schedule a quick repair with your local HVAC professional.

4. Loud High-Pitched Squealing

• Issue: High internal pressure within the compressor.
• Action:
  • Turn off your AC immediately.
  • Seek professional assistance to prevent dangerous pressure buildup.

5. Rattling, Thumping, Clanking, or Banging Noises

• Issue: Loose or broken components within the condenser unit.
• Action:
  • Turn off your HVAC system.
  • Call a professional technician to inspect and fix the issue.

Tips to Quiet Your AC

1. Regular Maintenance:
   • Change air filters regularly.
   • Keep outdoor units free from debris.
2. Professional Inspection:
   • Schedule annual HVAC maintenance.
   • Address any unusual noises promptly.
3. Metal Duct Joints:
   • If vents rattle or clank, check for loose or disconnected metal duct joints.
   • Use metal tape to reconnect joints.

Don’t let AC noises disrupt your comfort. Contact Koala Coolin for professional assessment and repairs.

Remember, a well-maintained AC system operates quietly. Prioritize your comfort and safety by addressing any unusual sounds promptly. Koala Coolin is here to ensure your HVAC system runs smoothly.