Air conditioning is one of those household systems we tend to forget about - until it stops working. A cool, comfortable home relies heavily on your air conditioner running smoothly, and regular aircon servicing is the key to making sure that happens. But how often do you really need to book a service? The answer depends on a few factors: the type of unit you have, how often you use it, and the environment it operates in.
This article breaks down everything you need to know about the frequency of aircon servicing, why it matters, and the signs your system may need attention sooner rather than later.
Why Aircon Servicing Is Important
Your air conditioner is more than just a box that blows cold air. It’s a complex machine with filters, coils, fans, and refrigerant that all work together. Over time, dust builds up, filters get clogged, and components wear down. Without regular aircon servicing, your unit has to work harder to deliver the same results, leading to higher energy bills and a shorter lifespan.
Professional servicing ensures that:
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Filters and coils are cleaned, keeping air quality healthy.
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Refrigerant levels are checked, preventing leaks and inefficiency.
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Electrical components are inspected for safety.
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The system runs at maximum efficiency, reducing power costs.
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Minor issues are spotted early before they turn into costly repairs.
Skipping services might save you money in the short term, but in the long run, it almost always costs more.
General Guidelines: How Often Should You Book Aircon Servicing?
For most households, aircon servicing is recommended at least once a year. This ensures your unit is inspected and cleaned before heavy summer use. However, depending on your situation, more frequent maintenance may be necessary.
1. Residential Homes
If you use your air conditioner primarily in the warmer months, annual servicing is usually sufficient. Ideally, this should be done in spring to prepare for summer heatwaves.
2. Heavy Use Environments
If your aircon runs daily for long hours - common in hotter climates or in homes with family members sensitive to heat - servicing every six months is more appropriate. This keeps your unit efficient despite the extra workload.
3. Commercial Properties
For offices, retail spaces, or hospitality businesses where air conditioning often runs non-stop, quarterly servicing (every three months) is recommended. The higher foot traffic and heavier use demand more frequent inspections and cleaning.
4. Dusty or Polluted Areas
If you live near construction zones, busy roads, or in areas with high pollen or dust levels, your filters and coils will clog faster. In these environments, booking a service every six months is wise, even for normal household use.
Signs Your Aircon Needs Servicing Sooner
Even if you stick to a regular schedule, sometimes your system will need extra attention. Look out for these common warning signs:
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Weak airflow: If the air feels less powerful, your filters or ducts may be clogged.
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Strange noises: Grinding, squealing, or rattling sounds often indicate loose or damaged parts.
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Unpleasant smells: Mould, mildew, or burning smells point to hygiene or electrical issues.
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Higher electricity bills: A sudden spike in costs without a change in usage can mean the unit is working inefficiently.
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Uneven cooling: If some rooms are cool while others stay warm, the system may be struggling.
Booking a professional aircon servicing as soon as you notice these issues can prevent a complete breakdown.
What Happens During an Aircon Service?
Many people wonder what technicians actually do during a standard service. While it can vary between companies, most comprehensive aircon servicing includes:
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Filter cleaning or replacement – essential for healthy airflow and indoor air quality.
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Coil cleaning – dirty coils reduce efficiency and cause strain on the system.
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Drain line flushing – prevents blockages and water leaks.
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Refrigerant check – ensures the correct levels for cooling performance.
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Fan and blower inspection – identifies wear or damage that could cause breakdowns.
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Thermostat and control testing – checks accuracy and performance.
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Overall system test run – confirms everything is working as it should.
This process usually takes 30–60 minutes for a split system, while ducted air conditioning may take longer due to its complexity.
How Regular Servicing Saves You Money
It’s easy to think of aircon servicing as an extra cost, but in reality, it’s an investment. Here’s how it pays off:
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Lower power bills: A clean, efficient unit consumes less energy.
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Fewer breakdowns: Regular servicing reduces the risk of emergency repairs.
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Extended lifespan: With proper care, your unit can last years longer.
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Improved comfort: A serviced system cools faster and maintains steady temperatures.
In fact, studies have shown that regular maintenance can cut energy consumption by up to 15%, which adds up significantly over the years.
DIY Maintenance vs Professional Servicing
Homeowners can do a few simple tasks between professional visits, such as:
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Cleaning or replacing filters every 1–3 months.
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Keeping outdoor units free from leaves, dirt, and obstructions.
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Wiping down vents and ensuring air isn’t blocked by furniture.
However, deeper servicing - like refrigerant checks, electrical testing, and internal cleaning - should always be left to licensed professionals. Attempting this yourself may void warranties and create safety hazards.
The Bottom Line
So, how often do you need aircon servicing? For most homes, once a year is enough. But if you use your system heavily, live in a dusty environment, or manage a commercial property, you may need servicing every 3–6 months.
Regular aircon servicing doesn’t just keep your system running - it protects your comfort, saves money, and extends the life of one of your home’s most important appliances.
When in doubt, it’s always best to book a professional inspection before the peak summer season. That way, you’ll stay cool, comfortable, and confident that your air conditioning is working exactly as it should.
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