How Long Do Air Conditioner Capacitors Last? (Easy Guide)

May you own an air conditioner and you want to know how long do air conditioner capacitors last, we’ve got you covered! This post highlights the lifespan of air conditioner capacitors. Stay tuned!

How Long Do Air Conditioner Capacitors Last?: What you need to know

Air Conditioner is an appliance used to keep a room or house cool and comfortable. It was invented in the early 1800s and became popular after World War II. Air conditioners come in different types, sizes, and brands.

A capacitor is a type of electrical capacitor that stores an electric charge. Capacitors are used in electronic circuits to store electric current so that it can be turned on and off easily.

Importances of Capacitors in an Air Conditioner

When it comes to air conditioning, one of the most important things to consider is the capacitor. Capacitors store electrical energy and can be used in air conditioners to help regulate electricity flow and keep your home cool and comfortable.

Here are some reasons why capacitors are so important in air conditioners:

1. They can help keep your home cool. A capacitor can help keep your home cool by storing electricity, which can then be used when needed to power the compressor or run the air conditioning unit.

2. They can protect your equipment. When an air conditioning unit is not working properly, a capacitor can help protect your equipment from damage or overloading.

3. They can reduce energy use. By using capacitors in air conditioners, you can reduce energy consumption by up to 50%.

4. They can reduce noise. Using capacitors in an air conditioner can help reduce the noise that it makes.

5. They can improve ease of use. Capacitors can improve the ease of use, by reducing the need to reset the unit after a breakdown or repair.

6. They can reduce cooling bills. Capacitors can reduce the cooling costs associated with running an air conditioning system, because they don’t need to be replaced as often as other parts of an air conditioner.

7. They can save money on electric bills. Because capacitors can be used to store energy, you can reduce your electric bills.

8. They can reduce corrosion. Capacitors are made of a special kind of metal that is used for air conditioners, and they don’t have any corrosive properties.

How Long Do Air Conditioner Capacitors Last?: A quick answer

Air Conditioner capacitor life is often unpredictable and depends on a variety of factors, including how often the compressor is used, how warm the room is, and how dusty or humid the air conditioner room is.

In general, however, most air conditioners last around 10 years before needing to be replaced.

How to Tell if Air Conditioner Capacitors Needs A Replacement: Telltale signs

Air conditioners use capacitors to store energy in order to turn the air on and off. There are a few telltale signs that your capacitor may be bad.

Here’s an easy guide on how to determine if your air conditioning capacitor needs replacement:

1. If the capacitor is leaking juice. If there is any juice coming out of the capacitor then it’s likely that it’s not working properly and needs to be replaced.

2. The second sign is if the capacitor has been 10000 times over-charged or under-charged. This will cause the capacitor to go into a “memory” state where it won’t hold any charge anymore. If this happens, your air conditioner will have to restart in order to get back up to par.

3. Look for any red or yellow labels on your unit. If they are missing, then the capacitor might need to be replaced.

4. Check whether or not the inside of your capacitor has been squished or broken since it was last used. Most capacitors are made from a thin, soft material. If you have any rough edges on the inside of your capacitor, then it could be broken. If you have one that is hard and cracked, then it’s likely to need replacement.

5. Check the terminals on the capacitor. Look for any rust or corrosion on them. If the terminal is rusty or corroded, then you should replace it to avoid electrical problems.

6. Check if your capacitor has been connected to your air conditioner in the correct way. If it is not connected correctly, then the capacitor could be damaged. You should connect your capacitor in a way that it creates a voltage of around 2 volts between its terminals.

How to Prolong the Lifespan of an Air Conditioner Capacitors

An air conditioner capacitor is an important part of an AC electrical system. Capacitors store energy and can protect equipment from over-voltage, over-load, or short-circuiting. Air Conditioner capacitors can last anywhere from 10 years to more than 100 years!

However, an air conditioner capacitor lifespan can be greatly prolonged by following some simple tips.

Here are some easy steps to extend the life of your AC capacitor:

1. Read and understand the cap’s data sheets carefully. Make sure you understand what each part does and why it matters. This will help you determine how best to abuse or fix your cap.

2. Be careful when installing or removing the capacitor. Do not over-tighten or over-disconnect the leads, as this could damage the cap and shorten its lifespan significantly.

3. Use an accredited service technician to service your AC capacitor if it starts showing signs of wear or deterioration (such as increase in noise). Do not try to do it yourself – professional service is much more reliable and accurate than home remedies!

4. Use a water-based cleaner on the capacitors every 6 months or so. This will remove any built-up oils and corrosion that may have taken place over time.

5. Change the filter on your unit regularly. Use an automatic operator/AC filter when cleaning or changing filters in your AC unit; this will help prevent dust and other particles from entering into your capacitors, reducing their life.

6. Be sure to keep your AC cord close to your air conditioner; this will help reduce noise and vibration that could shorten the lifespan of your capacitor.

7. Finally you can also try keeping your AC unit cool by adding a fan to it. This will cause the AC current in your capacitor to flow more easily and keep it cooler overall.


What would cause a capacitor to fail?

It is not difficult to understand how a capacitor can fail; however, understanding how it fails is often more challenging.

When the capacitor is dielectric, or doesn’t allow electricity to flow freely through it- typically when a capacitor is used in an air conditioning system- the electric fields inside and outside the capacitor cause shorts in the circuit.

This can create an open circuit, which will result in no power being delivered to devices connected to the system, such as air conditioners.

How do you test a bad air conditioner capacitor?

In order to test whether a capacitor is charging properly, you must cut off one end of the capacitor and measure how much current flows through it. If the current through the capacitor is low, then the capacitor may be charging properly. However, if the current through the capacitor is high, then it may not be charging properly and need to be fixed or replaced.

How much does it cost to replace a capacitor

The capacitors in air conditioners last for hundreds of years, but it can take some time for them to completely die. Replacing one can cost anywhere from $10 to $300.


Air Conditioner capacitor lifespan can be a difficult question to answer because it depends on a variety of factors.

The most common way to measure capacitor lifespan is by how often it needs to be replaced. This is because air conditioners use capacitors in order to regulate the amount of cooling air that is delivered to your home or office.

If the capacitor becomes damaged or low in voltage, then it won’t be able to provide the necessary cooling power and will need to be replaced.