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Air conditioner servicing and maintenance: What you need to know

How often should I service my air conditioner? How can I use my air conditioning system more efficiently and save money? Here’s what you need to know about the benefits of regularly servicing your air conditioner.
Cooling and heating systems consume the most energy in an average Australian household, making up approximately 40 per cent of the total energy usage, according to Your Home. The government website advises that having the right sized system for your home, setting your thermostat correctly, and getting your system regularly serviced can help your household save energy and money.
"As the warmer weather approaches, it's important to make sure your air conditioning unit is running efficiently and doesn’t waste energy,” says Nathan Tayeh, RACV Senior Product Manager of Trades.
"While it may seem like your air conditioner can run tirelessly year after year, problems with dirty filters, the thermostat, and drainage system are common."
RACV Emergency Home Assistant responds to around 4000 callouts to Victorian home for broken or damaged heating and cooling systems each year. Tayeh recommends getting your air conditioner serviced regularly by a qualified professional.
In addition, if you need to replace your air-conditioning system, Energy Safe Victoria warns it is not a DIY job - you must use a suitably licensed person to avoid putting yourself and your family at risk.
Benefits of regularly servicing your air conditioner | |
---|---|
Efficiency |
Regular maintenance ensures your air conditioner runs efficiently, which can help lower your energy bills. |
Longevity |
Like any appliance, your air conditioner will last longer if you take care of it and prevent minor issues becoming major problems. |
Health |
A clean air conditioner improves the air quality in your home. Over time, dust, mould, and other allergens can build up in your unit, which can be harmful to your health. |
Cost-effectiveness |
While it might seem like an unnecessary expense, regular servicing can save you money by preventing costly repairs and reducing your energy bills. |
Source: Your Home
The ultimate guide to air con maintenance
Benefits of regularly servicing your air conditioner
Reduce bacteria and improve air quality
When your air conditioner filters get clogged over years of use, the cool air it pumps out can be full of dust, mould and bacteria.
A regular service of your air conditioner unit will result in cleaner air filters and improved air quality - benefiting all household members, but particularly those suffering from persistent allergies such as hay fever, and breathing conditions such as asthma.
Even summer sniffles, colds and sore throats developed in the home can be reduced through cleaner air quality from your air conditioner.
If you do have an older air conditioner, a qualified professional may even advise you to purchase a new one. Modern air conditioner units are typically equipped with an internal filtration system that can help reduce bacteria particles in the air recirculation process.
More: How to test and improve indoor air quality
Reduce running costs and electricity bills
Cooling the home is likely to be one of the biggest contributors to your energy bill. Depending on the size of your home, the cost of running an air conditioner can range from a few cents per hour for a small unit in a small space, to a few dollars per hour for a larger home – which can very quickly add up over a hot and humid summer.
These running costs are likely to increase if your air conditioner is working less efficiently. A service can ensure that your air conditioner unit is running as efficiently as possible, and may help you save money on your energy bills.
Increase the lifespan of your air conditioning unit
The lifespan of your air conditioner doesn’t just depend on how frequently you use it, or how cool you choose to keep your home. Factors outside of your control, such as damage from storms, hail, dust storms and other weather events, can affect the performance and longevity of your unit.
Although the typical air conditioner can last more than a decade, regular servicing can extend its lifespan even longer.
While bad smells, limited air flow, warmer than usual air or a high energy bill are all tell-tale signs to immediately get a service, expensive breakdowns can occur without warning – underlining the importance of regular and preventative servicing.
On the flip side, without regular servicing, your air conditioner may last fewer than 10 years - meaning you may be faced with spending thousands of dollars for a new air conditioning unit.

An air conditioning service may help save you money on your energy bills.
When should I service my air conditioner?
It’s best to have a qualified professional undertake a service of your air conditioner before summer starts, ideally in October or November. General maintenance, including vacuuming the air conditioner’s filters, should occur during summer.
If you also use a reverse cycle system for heating, April and May is a good time for a professional heater service to ensure everything is functioning ahead of the cold months. Similarly, if you use your split system as your primary heater, clean the filters between June and August.
How often should I service my air conditioner?
Most air conditioner manufacturers recommend an annual service.
Undertake regular checks on your air conditioner’s filters and performance over summer. A quick check to ensure no dust build up can improve the efficiency and longevity of your air conditioner.
What to do if your air conditioner breaks
A broken air conditioner can result in sweltering indoor temperatures over the summer. If you have a broken heating or cooling system, you can call RACV Emergency Home Assist for help.