Most ducted air conditioning systems last 10 to 15 years, and a well-serviced system can go longer. Where yours lands in that range comes down to how it was sized, how often it’s serviced and what Perth throws at it: salt air on the coast, dust inland and long summer run times everywhere.
- Key Takeaways
- CHOICE puts air conditioner life expectancy at 10 to 15 years.
- Daikin says its ducted systems can last 10 to 15 years or more with proper care and maintenance.
- Daikin’s rule of thumb: if a repair quote is more than half the cost of a new system, replace it.
How Many Years Can You Expect?
Ten to 15 years is the common range. CHOICE’s guide to appliance lifespans gives air conditioners a life expectancy of 10 to 15 years, and manufacturers land in a similar place. Treat these as averages, not promises: the same model can struggle at eight years in one home and run past 15 in another.
| Source | Lifespan estimate |
| CHOICE | 10 to 15 years |
| Daikin (ducted systems) | 10 to 15 years or more, with proper care |
| ActronAir | At least 10 years |
| Mitsubishi Electric | Around ten years |
What Shortens a Ducted System’s Life in Perth?
Skipped servicing is the big one. Mitsubishi Electric notes that a lack of consistent servicing could easily reduce an air conditioner’s lifespan. Dirty return air filters make the fan and compressor work harder every hour they run, so cleaning your air conditioner filter is the cheapest life extension there is.
Live near the beach? Salt air corrodes outdoor coils and casings, which we cover in how Perth’s coastal air affects your AC. And a system that’s too small for the house runs flat out all summer. That’s why it pays to choose the right AC size for your Perth home from day one.
Should You Repair or Replace an Older System?
Age plus repair cost decides it. Daikin’s repair or replace guide says internal components can begin to wear out past the 12-year mark, and suggests replacing when a repair quote is more than half the price of a new system. Our air conditioning repairs team applies a similar test: over 10 years old with frequent repairs usually means replacement is better value.
Other signs your system is near the end? Rooms that never quite cool, rising power bills and breakdowns that keep coming back. When it’s time, we’ll scope a properly sized ducted air conditioning installation for your home.
Frequently Asked Questions
Most sources, including CHOICE, give one 10 to 15 year range for air conditioners rather than separate figures. In practice, servicing, sizing and location matter more than the system type.
Yes. Our ducted Gold service inspects the ducting, transitions and zones as well as the unit, and our lifetime workmanship warranty requires annual servicing on our AirCare plan. See how often you should service your air conditioner.
Often five years. Daikin offers a 5-year domestic warranty and ActronAir a 5-year warranty on its Australian made ducted systems, but terms vary, so check yours. A warranty covers faults; servicing is what gets you past year 10.
Wondering How Many Years Your System Has Left?
Our refrigeration mechanics service and install ducted systems across Perth, and every service includes a condition report with photos, so you’ll know where yours stands. Book an air conditioning service or talk to our team.
