How Long Will Different Types of Air Conditioning Systems Last?

Denali Air Conditioning • June 25, 2025

Air conditioning systems play a vital role in keeping our homes cool and comfortable, especially in regions like Shoalhaven, where the summer heat can be intense. However, like any appliance, your air conditioning unit requires regular care and maintenance to ensure it runs efficiently and lasts as long as possible. Regular air conditioning maintenance is key to extending the lifespan of your system and ensuring optimal performance for many years.


In this blog, we’ll break down the expected lifespan of various types of air conditioning systems, including split systems, ducted systems, evaporative coolers, and window units. We'll also discuss how regular air conditioning maintenance in Shoalhaven can significantly impact the longevity of your system.


Split-System Air Conditioners

Split-system air conditioners are one of the most common and popular types of cooling systems in homes today. These systems consist of two main parts: an indoor unit, which blows cool air into the room, and an outdoor unit, which houses the compressor and condenser coils.


Expected Lifespan:

A well-maintained split-system air conditioner can last anywhere from 12 to 15 years. With regular care, these systems can perform efficiently for much of their lifespan. However, if not properly maintained, they may experience a shortened lifespan due to issues like blocked filters, dirty coils, or refrigerant leaks.


How Maintenance Affects Longevity:

  • Filter Cleaning and Replacement: Clean filters ensure smooth airflow, reducing strain on the system.
  • Coil Cleaning: Regular cleaning of the condenser and evaporator coils prevents dust buildup, improving efficiency.
  • Annual Servicing: A qualified technician can check refrigerant levels, clean components, and ensure the system is running optimally.

By investing in air conditioning maintenance, you can maximise your split-system unit’s performance and longevity, ensuring that it cools your home effectively for years to come.


Ducted Air Conditioning Systems

Ducted air conditioning systems are designed for larger homes or spaces that require whole-house cooling. These systems use a network of ducts to distribute cool air through vents in multiple rooms. Ducted systems are typically more expensive than split systems, but they offer consistent and powerful cooling.


Expected Lifespan:

A ducted air conditioning system typically lasts 15 to 20 years with regular maintenance. Given that these systems are generally more complex and used more frequently, their longevity can vary based on usage and how well the system is maintained.


How Maintenance Affects Longevity:

  • Duct Inspections: Checking for leaks or blockages in ducts can prevent loss of efficiency and reduce strain on the system.
  • Cleaning of Air Filters and Vents: Regularly replacing or cleaning filters ensures smooth airflow and prevents dust buildup, improving air quality and efficiency.
  • System Check-ups: Regular servicing allows for checking refrigerant levels and ensuring that all components of the system are functioning correctly.

By scheduling regular air conditioning maintenance for your ducted system, you can ensure that it operates effectively and reaches its full lifespan.


Evaporative Cooling Systems

Evaporative cooling is a more energy-efficient way of cooling homes, particularly in dry climates. These systems work by drawing air through water-saturated filters, cooling it, and then circulating it through the home. They are popular in areas with dry heat and are generally more affordable to run than traditional refrigerant-based systems.


Expected Lifespan:

An evaporative cooler typically lasts between 8 and 12 years, depending on usage and maintenance. Evaporative systems may have a shorter lifespan compared to refrigerant-based systems because they work under harsher conditions and are exposed to water, which can lead to mineral buildup and corrosion if not properly maintained.


How Maintenance Affects Longevity:

  • Regular Cleaning of Pads and Filters: Mineral buildup on the cooling pads can significantly reduce efficiency, so cleaning them regularly is crucial.
  • Water Quality: Using clean water and maintaining the system’s water levels ensures the evaporative cooler performs optimally.
  • Pre-season Maintenance: Before summer, it’s important to service the system by checking for any leaks, cleaning filters, and ensuring proper airflow.


Routine air conditioning maintenance in Shoalhaven will help keep your evaporative cooler running smoothly, extending its life and efficiency.


Window Air Conditioning Units

Window units are compact, self-contained systems that sit in a window or wall and provide cooling for individual rooms. While they are not as powerful as split or ducted systems, window units are a more affordable solution for small spaces or specific cooling needs.


Expected Lifespan:

Window air conditioning units typically last between 8 to 12 years. These units can last a long time if properly maintained, but they are often subject to wear and tear because they are placed in windows, where they are exposed to weather conditions.


How Maintenance Affects Longevity:

  • Cleaning the Filters: Like other air conditioning systems, window units require regular cleaning of their filters to maintain airflow and efficiency.
  • Coil Cleaning: Cleaning the evaporator and condenser coils can prevent the buildup of dust and dirt, which can cause the system to overheat.
  • Annual Inspections: Servicing the unit annually will ensure that it’s running at peak performance, preventing small issues from developing into bigger problems.


By committing to regular air conditioning maintenance, you can help extend the lifespan of your window unit and ensure that it continues to cool your space effectively.


How Regular Air Conditioning Maintenance Helps

Regardless of the type of system you have, air conditioning maintenance plays a crucial role in extending the lifespan of your unit. Regular servicing ensures that all components are clean, well-lubricated, and functioning as they should. Here’s how maintenance contributes to longevity:


Benefits of Regular Air Conditioning Maintenance:

  • Prevents Expensive Repairs: Regular maintenance allows technicians to identify and fix small problems before they turn into costly repairs.
  • Optimises Efficiency: A well-maintained unit runs more efficiently, consuming less energy and reducing your utility bills.
  • Prolongs the System’s Life: Just like any other appliance, consistent care will help your air conditioning unit last longer and perform better.



Keep Your Air Conditioning Running Smoothly – Book a Maintenance Service Now

Understanding the expected lifespan of different types of air conditioning systems is crucial for homeowners and renters looking to make informed decisions about their cooling needs. Whether you have a split-system, ducted system, evaporative cooler, or window unit, regular air conditioning maintenance is essential to extending the lifespan and improving the efficiency of your system.


At Denali Air Conditioning, we offer expert air conditioning maintenance in Shoalhaven, helping you maximise the performance and longevity of your air conditioning unit. Contact us today to schedule a maintenance service and ensure your system runs efficiently for years to come.


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