Air conditioning filters

There is a common misbelief that air conditioning filters are “just something that blocks the air flow”. However, if chosen correctly, air filters efficiently protect both the downstream equipment, as well as the occupants of the building. Find out which types are suitable for your home or business in this week’s blog!

air conditioning filtersWe all know that air conditioning filters maintenance is crucial for a high-performing air con system. Not only that it extends the unit’s life but it also ensures the health and well-being of your family, employees or customers, depending on the intended use of the AC.

However, when it comes to changing the filter, you should know how to correctly choose the proper one. So what are the most common types available on the market today?


Washable filters – net and material filters

The net air conditioning filters, also known as “rock catchers”, are the most basic type of air filters. Basically, it only prevents very large debris, such as hair, rubbish or little rocks, from entering the system. Considering its low efficiency, you should consider replacing it if you own such type of air filter.

Similarly, material air conditioning filters are made from a breathable fabric, being used in domestic and light commercial applications. Unlike the net filters, they have a slightly higher filtration capacity.

Maintenance tips and tricks

  • Wash this filter every 3 to 6 months, ideally before summer and winter, to ensure better AC performance.
  • Replace the material every 2 to 3 years, as it may become loose and worn over time.


Cardboard disposable filters

Another popular type on the Australian market is the cardboard filter. Generally, it efficiently works in commercial applications where the air conditioning unit is operational on a daily basis. Just as the name implies, the filter has a cardboard frame (typically moisture resistant). In order to increase rigidity and durability, diagonal supports are included across the air conditioning filter. They are available in a number of rated efficiencies and standard sizes.

Maintenance tips and tricks

  • Replace these filters at least once a year, generally before summer. In high traffic commercial applications, you should change them every 3 to 6 months.
  • Measure the filter with a tape measure when ordering new ones. Some filters are custom made and the size printed on the side may not be accurate.
  • Place the dirty filter in a garbage bag as small debris may fall out of the filter when handling.


V-form filters

Last but not least, the domestic V-Form filter market is relatively new in Australia. It successfully adapts the filtration of a commercial grade filter to the domestic return air grilles. Moreover, it’s specifically designed to filter the air at a much higher degree, working up to 10 times better than the net and material types. With easy installation into most ducted systems in your home, these air conditioning filters surpass any other domestic type available.

Maintenance tips and tricks

  • Replace this filter annually. For areas with intensive use, you should consider replacing them once every 6 months.
  • Make sure you carefully read the filter code printed on the side when re-ordering.
  • Place the dirty filter in a garbage bag to catch any small particles that may fall off the filter.


In conclusion, choosing a correct air conditioning filter will save you time and money in the long run. Remember that regular maintenance will ensure healthy air and can also save up to 15% of your electricity cost!

If you need any help with your air conditioning filters, call Jaric Air Conditioning at 1300 452 742 and get personalized domestic and commercial heating or cooling solutions.


Until next time, be responsible and make the right choices!

Your friend and AC expert,

John Ricca


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