A capacitor stores energy to start your air conditioner’s motor. Symptoms of a bad AC capacitor may be as subtle as a humming sound or as obvious as your air conditioner not running at all. Here are some of the most common ones:

  • No cold air. This can also be linked to an incorrect thermostat setting, a dirty air filter or a refrigerant leak. Make sure your settings are correct, your filter is clean and that you’re not hearing bubbling or hissing sounds near your air conditioner. If the problem persists, call us at 307-778-0515 for air conditioning repair.
  • Humming sounds. Air conditioner noises are a sign that something’s wrong. Hearing humming means your capacitor could be going out. But it can also be caused by loose parts, a bad circuit breaker, a broken contractor relay switch or if your air conditioner freezes. If you’re not sure what’s wrong, AC Mechanical can diagnose the problem.
  • Air conditioner struggles to turn on or turns off without warning. If your air conditioner takes a long time to turn on, won’t turn on or shuts off mid-cycle, a bad AC capacitor could be to blame.