Keep Your AC Running Like New: Easy Tips for Year-Round Efficiency

8. Don’t Ignore Unusual Noises or Smells

Buzzing, rattling, or grinding noises may indicate loose parts, motor issues, or refrigerant problems. Musty smells could signal mold growth in the ductwork or on the evaporator coil. Burning odors might point to electrical issues or overheating components. Turn off the system and consult a technician if you notice anything unusual—catching problems early can prevent expensive damage and ensure a safe, healthy indoor environment.