Craftsman Air Compressor Capacitor

Craftsman Air Compressor Capacitor: Essential Guide

Craftsman air compressors are popular for their reliability and durability, making them popular among DIY enthusiasts and professionals. However, like any other mechanical equipment, they are prone to wear and tear over time.

A faulty capacitor is one of the most common issues in a Craftsman air compressor. A capacitor is an essential component of an air compressor that stores energy and releases it when needed to start the motor. If your Craftsman air compressor capacitor fails, your compressor won’t start, and you won’t be able to use it. We will learn everything you need about the Craftsman compressor capacitor.

We’ll cover the basics of what a capacitor is, how it works, and why it’s essential to the operation of your air compressor. We’ll also discuss the different types of capacitors available, how to troubleshoot common problems and tips for maintaining your capacitor.

Craftsman Air Compressor Capacitor

What Is A Craftsman Air Compressor-Capacitor?

What Is A Craftsman Air Compressor-Capacitor

Craftsman air compressors are popular for their efficiency, durability, and high performance. The designers created them to provide a reliable compressed air source for various applications such as inflating tires, powering air tools, and painting.

However, like any other electrical device, the Craftsman air compressor may experience problems, including a faulty capacitor. A capacitor is an essential component of an air compressor. It is responsible for starting and running the motor by storing electrical energy.

Craftsman designed the air compressor capacitor to release stored energy to the motor when it needs a boost to start or run. However, if the capacitor is faulty or damaged, the motor will not run, and the compressor will not function. Symptoms of a bad capacitor include a humming sound from the motor without starting, slow or weak motor start, or tripping the circuit breaker.

Craftsman Air Compressor Capacitor Key Component Explained

Craftsman Air Compressor Capacitor Key Component Explained

Regarding Craftsman Air Compressors, one key component that plays a critical role in their functionality is the capacitor. The capacitor is an electrical device that stores and releases electrical energy, and in an air compressor, it helps to start and run the motor. Without a functioning capacitor, the air compressor simply won’t work.

The capacitor is often seen as a small, cylindrical object located on the side of the motor, and it works by storing electrical energy in an electric field between two metal plates. When the motor needs to start, the capacitor releases this stored energy, providing an initial boost to get the motor running.

It’s important to note that not all capacitors are created equal, and choosing the right capacitor for your Craftsman Air Compressor is crucial. The capacitor’s voltage rating must match the motor’s voltage rating, and the capacitor’s microfarad (μF) rating must match the motor’s start and run requirements.

The Role Of Capacitors In Air Compressors

The Role Of Capacitors In Air Compressors

Capacitors play a vital role in air compressors by providing electrical energy for starting and operating the compressor. In a typical air compressor setup, a capacitor is connected to the motor to provide the initial burst of energy required to start the motor.

The capacitor stores electrical energy in an electric field and releases it when needed to start the motor. Once the motor is running, the capacitor continues providing an intermittent energy source to keep the motor running smoothly.

Capacitors are essential components in air compressors because they help to stabilize the electrical current flowing through the motor. Without a capacitor, the motor may experience sudden electrical current surges, damaging the motor and other electrical components. Capacitors smooth out surges to ensure that the motor operates at a consistent speed and prevent electrical fluctuations from damaging it.

How To Replace A Craftsman Air Compressor-Capacitor?

How To Replace A Craftsman Air Compressor-Capacitor

If you’re having trouble with your Craftsman air compressor and it’s not starting up as efficiently as it used to, it may be time to replace the capacitor. This small but vital component helps to store electrical energy and kick-start the motor to get it running. The good news is that replacing a Craftsman-air compressor capacitor is relatively simple and can do with a few basic tools. Here are some tips to replace a craftman compressor capacitor.

  •  Turn off the power to the air compressor and unplug it from the electrical outlet.
  •  Locate the capacitor on the air compressor. It is a small cylindrical object with two or three wires connected to it.
  •  Use a screwdriver or wrench to remove the screws or bolts holding the capacitor in place.
  • Take note of how the wires are connected to the capacitor, as you will need to reconnect them correctly later.
  •  Carefully disconnect the wires from the old capacitor and remove it from the air compressor.
  •  Install the new capacitor by connecting the wires in the same way they were connected to the old capacitor.
  •  Securely fasten the new capacitor in place using screws or bolts.
  •  Double-check that all connections are secure and tight.
  •  Plug in and turn on the air compressor to test if it is working properly with the new capacitor.

Can A Faulty Craftsman Air Compressor -Capacitor Affect Performance?

The capacitor in an air compressor is an essential component that helps to store electrical energy and release it when required. If the capacitor is faulty, it can significantly impact the air compressor’s performance.

A faulty Craftsman-air compressor capacitor can cause various issues, including reduced power output, increased energy consumption, and frequent motor failure. The compressor may struggle to start, and a noticeable decrease in air pressure may produced. The motor may also run longer than usual, leading to overheating and reduced lifespan.

In many cases, a faulty capacitor can be easily identified by visible signs of damage or by testing its electrical properties. If you suspect that your Craftsman-air compressor capacitor is faulty, it is essential to replace it as soon as possible to prevent further damage to the compressor. A new capacitor can restore the compressor’s performance to its optimal level, ensuring that it operates efficiently and effectively.

How To Safely Handle A Craftsman Air Compressor-Capacitor?

How To Safely Handle A Craftsman Air Compressor-Capacitor

Handling a Craftsman air compressor capacitor safely is crucial to avoid any accidents. Before handling the capacitor, turn off the power supply and unplug the compressor from the outlet. Make sure the capacitor has discharged completely before touching it.

To do this, use an insulated screwdriver to bridge the two terminals of the capacitor and discharge any remaining energy. Once the capacitor is discharged, carefully remove it from the compressor. Avoid touching the metal connectors or exposed wires with your bare hands, as it may cause electric shock. Wear protective gloves and safety glasses while handling the capacitor.

If you notice any signs of damage or wear and tear, such as bulging or cracking, do not attempt to handle it. Instead, seek professional assistance or replace the capacitor. When installing a new capacitor, follow the manufacturer’s instructions and match the specifications of the old capacitor. Always handle the capacitor with care and respect for its power to ensure the safety of yourself and those around you.


The Craftsman-air compressor capacitor is a crucial component that plays a significant role in the performance of your air compressor. It helps provide the necessary electrical energy to start and run the motor smoothly.

If you experience any issues with your compressor, such as difficulty starting, low power output, or frequent trips, it is essential to inspect the capacitor for any signs of damage or malfunction. If you’re unsure about handling or replacing the capacitor, it’s always best to consult a professional for assistance.

Remember to prioritize safety by following proper procedures and precautions when working with electrical components. Taking care of your Craftsman air compressor capacitor will ensure optimal performance and longevity for your equipment.

Frequently Asked Questions

What Happens When A Capacitor Goes Bad In An Air Compressor?

When a capacitor fails in an air compressor, it can lead to motor starting issues or complete failure. The motor might run at a slower speed or overheat due to the faulty capacitor. Prompt replacement of the bad capacitor is essential to prevent further damage.

What Are The Symptoms Of A Start Capacitor On An Air Compressor?

Symptoms of a faulty start capacitor on an air compressor include difficulty starting or slow start-up, frequent circuit breaker tripping or blown fuses, insufficient pressure or power output, and strange noises like humming or buzzing.

Can I Run Air Compressor Without A Capacitor?

Running an air compressor without a capacitor is not recommended. The capacitor is essential for starting the motor and providing additional power during operation. Running without it can lead to motor damage or failure. If your air compressor’s capacitor is faulty, replace it before using the compressor.

Will A Compressor Start With A Bad Run Capacitor?

No, a compressor will not start with a faulty run capacitor. The run capacitor provides the necessary electrical boost to start the compressor motor. If the run capacitor is damaged or not functioning properly, the compressor may struggle to start or fail to start altogether. It is crucial to replace a bad run capacitor to ensure the proper functioning of the air compressor.

How Can I Determine If The Capacitor In My Craftsman Air Compressor Is Faulty?

To determine if the capacitor in your Craftsman air compressor is faulty, look for physical signs of damage like bulging or leaking. Use a multimeter to test the capacitor for proper capacitance and resistance values. If the compressor motor fails to start or hums but doesn’t run, it may indicate a faulty capacitor. Consult the Craftsman air compressor manual or contact customer support for specific troubleshooting steps.

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