5 Signs of a Bad AC Capacitor

An AC capacitor is one of the key components of your cooling system. AC capacitors may last anywhere between 5 to 20 years before they start to fail. When this happens, you may notice that your AC isn't working properly.

Learn the signs of a bad AC capacitor so you'll know when to call an air conditioning service contractor in Corona, CA.

What Is an AC Capacitor?

The AC capacitor is an element that sits in your air conditioner's outside unit. It sends a big burst of energy to your AC's motor at the start of a cooling cycle. Your AC will then continue running on steady power until the cycle ends. In simple terms, you could view the AC capacitor as a battery that accumulates and supplies energy to the air conditioner.

Signs of a Faulty AC Capacitor in Corona, CA

AC capacitor problems are more common in older air conditioners. If your cooling system is older than 10 years, especially if it's an outdated air conditioner still using Freon, you may consider an upgrade.



However, even newer cooling systems could struggle to work properly without regular servicing. Pay attention to the following five signs of a bad AC capacitor.

1. Weak Airflow or Warm Air

One of the first things you may notice when an AC capacitor fails is that your home feels uncomfortably warm. Check whether you feel warm air or weak airflow from your vents. Since the capacitor powers the compressor and fans in your cooling system, airflow will be significantly weaker when it fails.

2. Delayed AC Startup

A delayed air conditioner startup is one of the most common signs of a bad AC capacitor. A faulty capacitor will struggle to deliver enough energy to start the compressor. Your AC may even fail to turn on, which isn't something you want to happen during a Southern California summer.

3. AC Humming Noise

While low, steady humming from an AC is normal, loud humming could be a sign that your capacitor is about to fail. Have it replaced ASAP before it stops working.

4. Frequent Cycling

A cooling system that works properly will cycle to keep up with your thermostat settings. However, if your AC keeps turning on and off in brief cycles, it could be a sign of a capacitor problem.

5. High Energy Bills

When the capacitor fails, your AC will strain to cool your home. The cooling system will waste more energy, and you may notice higher electricity bills even though you use your AC no more than usual. Look through your previous bills to see any difference in energy consumption.

Cooling System Issues in Corona, CA? Call Inland Empire Comfort

Knowing when an AC capacitor is about to fail will help you address this issue before your cooling system suffers further damage. Also, if you're asking, "Is AC maintenance worth it?" the answer is yes. Regular tune-ups will help prevent capacitor-related problems.

Does your cooling system show signs of a bad AC capacitor? Contact Inland Empire Comfort for reliable AC service in Corona, CA.