How Often Should You Service Your Air Conditioner?
Regular maintenance keeps your air conditioner running efficiently, extends its lifespan and prevents the kind of breakdowns that always seem to happen on the hottest day of the year. But how often does it actually need servicing, and what does servicing involve? Here's a practical guide for Sydney households.
How Often to Service Your Air Conditioner
| Use Frequency | Recommended Service Interval |
|---|---|
| Light use (occasional summer cooling only) | Every 2 years |
| Moderate use (daily summer + occasional winter heating) | Every 12–18 months |
| Heavy use (daily year-round reverse cycle) | Every 12 months |
| High-humidity or dusty environment | Every 6–12 months |
For most Sydney households using their aircon daily through summer and regularly in winter, an annual service is a good baseline. Sydney's coastal climate means dust, pollen and humidity can build up faster than in drier inland climates.
What Does a Professional Air Conditioner Service Include?
A professional service by a licensed HVAC technician typically includes:
- Filter cleaning or replacement — clogged filters are the number one cause of reduced aircon performance
- Coil cleaning — both evaporator (indoor) and condenser (outdoor) coils accumulate dirt and dust over time, reducing heat exchange efficiency
- Drain clearing — checking and clearing the condensate drain to prevent water overflow and mould growth
- Fan blade inspection and cleaning
- Electrical connections inspection — checking for loose connections, signs of wear or corrosion
- Refrigerant pressure check — checking for refrigerant leaks (low refrigerant means poor cooling and can damage the compressor)
- System performance test — verifying temperature delivery and comparing to rated output
What You Can Do Yourself: Filter Cleaning
Between professional services, clean your filter yourself every 4–8 weeks during heavy use periods. Here's how:
- Turn the air conditioner off
- Open the front panel of the indoor unit (usually lifts up or unclips)
- Remove the mesh filter(s)
- Rinse under warm water (no soap needed for light dust)
- Allow to dry completely before reinstalling — do not reinstall a wet filter
A clean filter is the single biggest thing you can do to maintain your aircon's performance and efficiency between professional services.
Signs Your Aircon Needs Servicing Now
- Not cooling or heating as well as it used to
- Unusual smells (musty = mould; burning = electrical issue)
- Unusual noises (rattling, grinding, squealing)
- Water leaking from the indoor unit
- Ice forming on the indoor unit
- Higher electricity bills without explanation
If you notice any of these, don't wait for the scheduled service date — call a technician promptly.
Oceania Appliances: Air Conditioner Supply and Installation
We supply and can arrange installation of split system air conditioners across Sydney from Daikin, Mitsubishi Electric, Samsung and LG. Contact us for more information or to see our current stock.