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Replacing The Run Capacitor In Your Goodman Air Conditioner Unit: A Simple Guide

Replacing The Run Capacitor In Your Goodman Air Conditioner Unit: A Simple Guide

When your Goodman air conditioner fails to power on properly, a frequent culprit is a malfunctioning run capacitor. To resolve this issue on your own, it is imperative to replace the run capacitor. This article will guide you through the process, providing a step-by-step approach and additional insights into Goodman air conditioners, answering frequently asked questions, ensuring your system operates efficiently.

Understanding The Run Capacitor In Goodman Air Conditioners

Replacing The Run Capacitor In Your Goodman Air Conditioner Unit: A Simple Guide

A run capacitor is an essential electrical component that regulates the flow of electricity in an air conditioner, specifically aiding in starting the compressor. When the compressor initiates, it draws a substantial current, and the run capacitor plays a crucial role in preventing the system from overloading with electrical power. This capacitor is located within the outdoor unit of the air conditioner.

How To Replace The Run Capacitor

Follow these step-by-step instructions to replace the run capacitor in your Goodman air conditioner:

  1. Turn off the A/C thermostat: Begin by turning off your air conditioning thermostat. This ensures your safety by preventing potential electrical shocks during the replacement process.
  2. Turn off the HVAC breaker: Next, it is essential to turn off the HVAC breaker. Cutting off the power supply to the air conditioner is critical because the run capacitor may still carry dangerous electrical currents.
  3. Open the relay access cover: After ensuring all power sources are disconnected, remove the relay access cover from your Goodman air conditioner. Typically, this cover is secured by two screws. If you are unsure of its location, consult the owner’s manual for a diagram specific to your air conditioner.
  4. Locate the run capacitor: With the relay access cover removed, identify the run capacitor. It is a cylindrical object with two metal terminals. Take note of which terminal is connected to each wire, as you will need this information during reconnection.
  5. Remove wires from the run capacitor: Carefully detach the wire terminals from the old capacitor. Be cautious not to damage or mix up the wires. If the terminals prove difficult to remove, consider using rubber-handled needle-nose pliers or a flat-head screwdriver with a rubber handle to minimize the risk of electrical shocks.
  6. Replace the run capacitor: After safely removing the old run capacitor, replace it with a new one. Ensure the terminals are connected to the correct wires and that they are securely fastened to the capacitor.
  7. Close the relay access panel: Reattach the relay access panel, securing it in place with screws.
  8. Turn on the HVAC breaker: Finally, restore power by turning the HVAC breaker back on, following the same order in which it was turned off.
  9. Set the A/C thermostat to cool mode: To complete the process, switch your air conditioning thermostat to cool mode. Your Goodman air conditioner should now be operational, provided the run capacitor was the source of the problem.
Replacing The Run Capacitor In Your Goodman Air Conditioner Unit: A Simple Guide

Common Issues And Troubleshooting

If your air conditioner still fails to start after replacing the run capacitor, it might indicate other underlying problems. Here are some potential issues to check:

  1. Tripped Breaker: Ensure the breaker controlling your air conditioner is not tripped, and reset it if necessary.
  2. Blown Fuse: Examine the fuses with a voltmeter to check if they are blown.
  3. Clogged Air Filter: Regularly clean and replace your air filter to prevent airflow restrictions and overheating.
  4. Dirty Evaporator Coils: Clean the evaporator coils annually to ensure efficient heat absorption.
  5. Clogged or Dirty Condenser Lines: Clear any clogs or dirt in the condenser lines to ensure proper refrigerant flow.
  6. Bad Motor: A faulty motor may require replacement.
  7. Compressor: A malfunctioning compressor can disrupt the entire system.
  8. Refrigerant: Insufficient refrigerant or a leak may necessitate professional repair.
  9. Bad Control Board: A malfunctioning control board can prevent your air conditioner from starting.
  10. Thermostat: An old or faulty thermostat may hinder the air conditioner’s operation.

When all else fails, seek professional assistance for diagnosis and repairs.

How Long Does A Goodman Air Conditioner Last?

Goodman air conditioners are designed to be durable and can typically last between 10 to 15 years with proper maintenance. If your Goodman air conditioner reaches this age and you encounter recurring problems, it may be time to consider a replacement.

Regular Maintenance

Regular servicing of your Goodman air conditioner is recommended twice a year, ideally in the fall and spring, to extend its lifespan and maintain optimal efficiency.

Signs It’s Time To Replace Your Goodman Air Conditioner

Several indicators suggest it may be time to replace your Goodman air conditioner:

  1. Old Age: If your air conditioner approaches the 10-year mark, replacement may be a wise choice.
  2. Constant Repairs: Frequent repairs may signify the system’s components are deteriorating.
  3. High Energy Bills: Sudden spikes in energy bills may suggest decreased efficiency.
  4. Inconsistent Cooling: Uneven cooling throughout your home could be due to various issues, including low refrigerant levels, dirty coils, or a failing compressor.
  5. Increased Moisture: Excessive moisture and a refrigerant leak indicate a need for replacement due to impaired functionality and potential health risks.
  6. Unusual Sounds: Strange noises from your air conditioner can indicate problems that require professional attention.


Troubleshooting and replacing the run capacitor in your Goodman air conditioner is a manageable task if you follow the steps outlined in this guide. However, if your air conditioner still does not operate correctly, consider seeking professional assistance. Regular maintenance and attention to signs of aging or inefficiency can help prolong the life of your Goodman air conditioner and ensure the comfort of your home during hot weather.

Replacing The Run Capacitor In Your Goodman Air Conditioner Unit: A Simple Guide

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