HELP CENTRE

FAQs: Maintenance

HOW OFTEN TO A CLEAN HEAT PUMP FILTER / AC FILTER?

By Kyle Rafter - October 28, 2025

If you’re wondering how often to clean the filter in your air conditioner, it really comes down to how often you use it. Clean filters keep the air moving properly, prevent the unit from working too hard and improve air quality. For most New Zealand homes, monthly filter cleans are fine if your system runs daily. If you only use it occasionally, every three months is usually enough. If your home has pets, there’s too much dust or you notice reduced performance, you will have to clean the filters more frequently. 

Staying on top of heat pump filter cleaning ensures consistent comfort all year round. Clean filters also help avoid excessive energy consumption and mean your system doesn’t have to work as hard to reach a comfortable level. In the long run, this can save on power bills and prolong the life of your unit.

To make filter maintenance simple, let’s look at where Fujitsu heat pump filters are located and the steps you can follow for effective cleaning.

Where are Fujitsu Heat Pump Filters Located?

For the majority of wall mounted aircon units, floor consoles and cassette heat pumps, air conditioner filters are stored in the unit and can be removed quite easily. In ducted systems, the filter is usually located in the return air grille on the ceiling.

Being familiar with the location of your Fujitsu filters can make regular maintenance that much easier, improving efficiency, airflow and indoor air quality.

How to Clean AC Filters?

For anyone wanting to know the best way to clean aircon filters, the good news is that it’s a simple process. For wall air conditioners, floor console air conditioners and cassette units, the filters are located inside the unit itself.

Most filters can be cleaned by gently washing them in warm water. Avoid harsh chemicals and make sure the filter is completely dry before reinstalling. Refitting a damp filter can lead to mould growth or damage to the unit. 

Making AC filter cleaning part of your routine will keep your system running smoothly and efficiently and help maintain cleaner indoor air.

How to Clean Ducted Air Conditioning Filters?

If you’re wondering how to clean ducted aircon units, the process is much the same. The filter is typically located in the return air grille on the ceiling. Carefully remove it, wash it with warm water and let it dry fully before reinstalling. Regular cleaning helps maintain airflow and efficiency across the entire home.

Most ducted filters can be cleaned at home, but if you’re unsure or the filter looks worn, professional help is recommended. 

If you’re not sure where your filter is located or need guidance on how to clean your air conditioner filter, check your unit’s manual or contact our team for support.

Contact Us

Kyle Rafter
General Manager, Product & Strategy at Fujitsu General Australia & New Zealand

Kyle has over 16 years experience within the air conditioning industry. Since joining Fujitsu General in 2015, Kyle has driven innovation and growth, leveraging his expertise in commercial business development. Passionate about cutting-edge technology, Kyle is dedicated to advancing sustainable solutions in the air conditioning sector.

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