Goodman AC Unit Capacitor and What You Should Know About It

Understanding the function of the Goodman AC unit capacitor is crucial for effectively managing your air conditioning system. While you don’t need to be an AC expert, having basic knowledge about this component can help you identify and address potential issues promptly.

Establishing expertise, authority, and trustworthiness in discussing AC unit capacitors involves providing detailed knowledge, citing credible sources, and sharing relevant experiences. This article aims to inform and guide you, ensuring accuracy and up-to-date information without promoting any product or service.

Goodman AC Unit Capacitor Troubleshooting

What is an AC Capacitor?

An AC capacitor is a cylindrical electrical component that stores and releases electrical energy. It stabilizes the voltage and helps start the AC motors efficiently. A faulty capacitor can severely impact the performance of your AC unit, making it crucial to understand how to troubleshoot and address potential issues.

goodman ac unit capacitor

Signs of a Bad Capacitor

Here are some common signs indicating a bad capacitor in your Goodman AC unit:

  • Lack of Cooling: If your AC no longer provides a cooling effect, it may be due to a faulty capacitor.
  • Humming Noise: A defective capacitor often produces a loud hum as it struggles to function properly.
  • Sudden Shutdowns: If your AC unit shuts off suddenly without any apparent reason and doesn’t turn back on, the capacitor might be the culprit.

Checking the Capacitor

To check the Goodman AC unit capacitor, follow these steps:

  1. Disconnect Power: Ensure the AC unit is disconnected from the power source.
  2. Locate the Capacitor: Find the capacitor with two terminals. These terminals will still hold a charge.
  3. Discharge the Capacitor: Use a screwdriver to short the terminals and discharge any remaining power.
  4. Remove Wires: Disconnect the wires connected to the capacitor.
  5. Use a Multimeter: Place the probes of a multimeter on the terminal points and check the reading. It should be within 6% of the capacitor’s rating. A lower reading indicates the need for a replacement.
  6. Analog Multimeter: If using an analog multimeter, set it to the highest resistance setting, place the probes on the terminals, and observe the resistance. It should start at 0 and rise to the maximum. A static reading indicates a faulty capacitor.

Visual Inspection

  • Leaks or Bulges: Any oily leaks or bulges on the capacitor are clear signs that it needs replacement.
  • Size Discrepancy: If the capacitor appears larger than usual, it might be faulty.

Goodman AC Capacitor Replacement Cost

The cost of a new capacitor typically ranges from $10 to $20. However, professional replacement services can cost between $300 and $500. While DIY replacement is possible, it is advisable to hire a professional if you are unfamiliar with AC unit repairs to avoid potential risks.

Read also: How Much Does Replace an Air Conditioner Capacitor Cost?

Professional Assistance

If you suspect an issue with your Goodman AC unit capacitor, it is best to consult with an expert. Timely intervention can prevent further damage to your AC unit and ensure efficient operation.


By understanding the basics of your Goodman AC unit capacitor, you can identify issues early and take appropriate action. Regular maintenance and prompt troubleshooting can save you from costly repairs and ensure the longevity of your AC unit.

By maintaining your AC unit and looking for these common issues, you can ensure a comfortable and efficient cooling experience throughout the year.

Gravatar Image
AirconMag is an experienced author and Air Conditioner expert. With years of practical experience in the field authored several informative articles on various aspects of AC unit, including installation, maintenance, and repair