Ultimate Guide: Window Air Conditioner Lifespan, Filter Change, & Capacitor Duration

How Long Do Window Air Conditioners Last?

Window air conditioners are a popular choice for cooling individual rooms or small spaces. They are affordable, easy to install, and provide effective cooling during hot summer months. However, like any other appliance, window air conditioners have a limited lifespan. In this article, we will explore how long window air conditioners typically last, common issues users face, and tips for troubleshooting and maintenance.

How Long Do Window Air Conditioners Last?

The lifespan of a window air conditioner can vary depending on several factors, including the quality of the unit, usage patterns, and maintenance. On average, a well-maintained window air conditioner can last between 8 to 12 years. However, some units may last even longer with proper care.

It’s important to note that the lifespan of a window air conditioner can be significantly reduced if it is not properly maintained. Regular cleaning, filter replacement, and professional servicing can help extend the lifespan of the unit.

How to Change Air Conditioner Filter

One of the most common maintenance tasks for window air conditioners is changing the air filter. The air filter helps to trap dust, pollen, and other particles, ensuring clean and healthy air circulation. Over time, the filter can become clogged, reducing the efficiency of the unit and potentially causing damage.

To change the air conditioner filter, follow these steps:

  • Turn off the air conditioner and unplug it from the power source.
  • Locate the air filter compartment, usually located on the front or side of the unit.
  • Remove the old filter by sliding it out or unscrewing the cover.
  • Inspect the new filter for any packaging or protective coverings and remove them.
  • Insert the new filter into the compartment, making sure it is properly aligned.
  • Secure the cover or slide the filter back into place.
  • Plug in the air conditioner and turn it on to test the new filter.

It is recommended to change the air conditioner filter every 3 to 6 months, depending on usage and air quality. Regular filter replacement not only improves the performance of the unit but also helps to prolong its lifespan.

How Long Do Air Conditioner Capacitors Last?

Air conditioner capacitors are essential components that help start the motor and keep it running smoothly. They store electrical energy and release it when needed. Over time, capacitors can degrade and fail, leading to issues such as the air conditioner not turning on or not cooling effectively.

The lifespan of an air conditioner capacitor can vary depending on factors such as usage, electrical fluctuations, and environmental conditions. On average, capacitors can last between 10 to 20 years. However, they may require replacement sooner if they are exposed to extreme temperatures or experience frequent power surges.

How Long Does an Air Conditioner Capacitor Last?

The lifespan of an air conditioner capacitor can vary depending on its type. There are two main types of capacitors used in air conditioners: start capacitors and run capacitors.

Start capacitors are responsible for providing the initial boost of power to start the motor. They are designed to handle high electrical loads for a short period. Start capacitors typically have a shorter lifespan and may last between 1 to 5 years.

Run capacitors, on the other hand, are responsible for maintaining a steady electrical flow to keep the motor running. They are designed to handle continuous operation and have a longer lifespan. Run capacitors can last between 5 to 20 years.

If you suspect a faulty capacitor in your air conditioner, it is recommended to consult a professional technician for diagnosis and replacement.

Replacement Parts for Window Air Conditioners

Window air conditioners are complex appliances with various components that may require replacement over time. Some common replacement parts for window air conditioners include:

  • Compressor: The compressor is responsible for compressing the refrigerant and circulating it through the system. It is a crucial component for cooling and may require replacement if it fails.
  • Thermostat: The thermostat controls the temperature settings of the air conditioner. If it malfunctions, it may need to be replaced to ensure accurate temperature control.
  • Fan Motor: The fan motor is responsible for circulating air within the unit. If the fan motor fails, the air conditioner may not cool effectively.
  • Control Board: The control board regulates the functions of the air conditioner. If it becomes damaged or faulty, it may need to be replaced.

When replacing parts for a window air conditioner, it is recommended to use genuine spare parts from the manufacturer or authorized dealers. Using compatible parts ensures proper functionality and compatibility with the unit.

Troubleshooting Common Issues

Window air conditioners may experience various issues over time. Here are some common problems users may encounter and possible solutions:

  • Unit not cooling: Check if the air filter is clean and not clogged. Clean or replace the filter if necessary. Ensure that the thermostat is set to the desired temperature and that the unit is not obstructed by furniture or curtains.
  • Strange noises: Noises such as rattling or squealing may indicate loose or worn-out parts. Inspect the unit for any loose screws or components. If the noise persists, it is recommended to contact a professional technician.
  • Water leakage: Water leakage can occur if the condensate drain is clogged or the unit is not properly leveled. Clean the condensate drain and ensure that the unit is level to prevent water leakage.

If troubleshooting steps do not resolve the issue, it is advisable to contact the authorized service center for further assistance. In the United Kingdom, window air conditioners are widely used, and there are service centers available in many provinces. Users can call the call center specified on the company’s official website to find the nearest service center.


Window air conditioners typically last between 8 to 12 years with proper maintenance. Regular filter replacement, cleaning, and professional servicing can help extend the lifespan of the unit. Air conditioner capacitors can last between 10 to 20 years, depending on their type and usage. When troubleshooting common issues, it is important to check the air filter, inspect for loose parts, and ensure proper leveling. If problems persist, contacting the authorized service center is recommended. Window air conditioners are widely used in the United Kingdom, and users can find service centers in many provinces by contacting the call center specified on the company’s official website.

Note: The information written here is collected

2 thoughts on “Ultimate Guide: Window Air Conditioner Lifespan, Filter Change, & Capacitor Duration”

  1. LOL, who even changes their window AC filter? Ive had mine for years and its still running fine!

    1. davidcontactor@gmail.com

      Wow, you must really enjoy breathing in all that dust and allergens. But hey, who am I to argue with your impeccable HVAC maintenance skills? Just dont come crying when your AC breaks down and costs you a fortune to fix.

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