How to clean a ducted aircon filter

ducted aircon filter

Do you have a ducted aircon system in your home? If so, you’ll want to make sure that the filter is in good, clean condition. The filter plays a key role in preventing dust and grime from entering your ducts. When air is pulled from the room into the A/C system, it passes through the air filter. Over time, it’s almost inevitable that dirt, dust and allergens will accumulate on the filter. If it’s not cleaned regularly, the filter mesh becomes clogged. This means the system has to work harder to draw air in. If a filter remains uncleaned for a considerable period of time, your A/C will become less efficient and may eventually fail completely. Luckily, cleaning a ducted aircon filter is a simple, quick job that requires no specialist equipment beyond a ladder and a screwdriver.

Follow our straightforward, five-step guide for the best way to clean your ducted aircon filter.

1. Locate and reach the filter covering

In most ducted A/C set-ups, the filter is concealed behind a large ceiling grille. If you want to change the filter, the first step is to locate it on your property. The hallway ceiling is a common location for the grille, but this isn’t always the case. Once you’ve found the grille, the next step is to be able to reach it. If you need to use a ladder, make sure it’s in good condition and that the floor under the ladder is level and non-slip. If you’re not comfortable being up a ladder, or have a health condition that means it’s not safe for you to be up a ladder, call the team at Same Day Trades and we’ll be happy to help.

In addition, if this is the first time you’ve opened the grille, you suffer from allergies or you suspect it’s going to be excessively dusty, we recommend that you wear a face mask. When the grille is opened, there’s a possibility that dust may also be released. A face mask ensures you’re protected from any build-up that might be disturbed during the filter removal process.

2. Locate the holding screw

Located on the rim of the grille, you should find a screw that’s holding the grille in place. You may need to use a screwdriver to unscrew it, or it may be a variant that can be unscrewed by hand. Make sure that, once unscrewed, the screw is stored in a safe place, as you will need it once the filter has been cleaned.

As the screw is loosened the grille will start to move downwards. The direction of the downward movement will depend on which side of the grille is hinged. It’s helpful to identify the hinged edge before you start unscrewing so that you’ll know in which direction the grille’s movement will occur.

3. Remove the filter

Once the grille has swung down, the filter can be slid out from its slots behind the grille. This should be a simple process. Filters are light objects that can usually be easily held by one person. If you need to remove the filter whilst standing on the ladder, you may wish to have someone else nearby to hold it whilst you descend the steps.

4. Clean the filter

The easiest way of cleaning the filter is to take it outside and hose it down. Point the hose to the side of the filter that’s dust-free. The force of the water should blast away the accumulated dirt and grime in just a couple of minutes. If the filter is very clogged, it may take a little longer. It’s not necessary to use detergent on the filter. Some people prefer to vacuum their filter before washing it.

Once it’s sparkling clean, give it a good shake to remove excess water. There’s no need for the filter to be completely dry before it’s reinstalled, but we recommend leaving it somewhere clean to air-dry for a few hours before reinstalling it.

5. Replace the clean filter in its position behind the grille

Make sure it’s replaced the same way as it was previously. Once the filter is firmly in position, it’s just a case of shutting the hinged door and screwing the screw back into position.

The benefits of regular filter cleaning

Clean your ducted aircon filter regularly and enjoy:

– Cleaner, fresher air.
– Improved air quality in your home.
– Energy-efficient performance from your A/C system.
– A reduced risk of excess strain being put on the system (which could mean fewer costly repairs and a longer lifespan for your A/C).

If you are concerned about any aspect of your A/C’s performance or maintenance, the professional, experienced team at Same Day Trades are just a phone call away. Get in touch for emergency assistance, or for a scheduled A/C appointment from one of our friendly, knowledgeable technicians.

Recent Posts

What Our Customers Say?

Same Day Trades place picture
4.6
Based on 1338 reviews
powered by Google
Sue Burcham profile pictureSue Burcham
01:53 02 Jan 26
Jacob B was a delightful, polite and informative plumber and was very clear about costs and options before replacing my leaking tap. I appreciated his professional manner, efficiency and that he cleaned up after himself. Very grateful.
K Bartolay profile pictureK Bartolay
01:22 02 Jan 26
We are happy with the initial work done today by Tyrell. He arrived on time, quickly assessed the issue, and start the initial work on our kitchen sink. He is good at what he does and goes above and beyond to help his client.
Ken Fisher profile pictureKen Fisher
07:56 29 Dec 25
Daniel came out 24/12/25 and gave quote on work required couldn’t do work due to mains tap not turning off completely I called water corp they came out and replaced mains tap valve l then contacted Daniel and he made booking for Monday 28/12/25 Luke came out and did work and left work area clean and tidy Job well done and l am very happy with work done and would recommend these guys anytime
Kimball Copeland profile pictureKimball Copeland
12:17 20 Dec 25
Jacob did a fantastic job. The work was completed cleanly and in a timely manner, and he was polite and professional throughout. Highly recommend.
Aileen Craig profile pictureAileen Craig
08:44 18 Dec 25
Cameron, Luke, Tyson and Anton were all amazing. Removed our old air conditioner and replaced it within two hours. Went above and beyond. Would highly recommend!
Lothar Sehnert profile pictureLothar Sehnert
05:53 12 Dec 25
I’m so happy with the worked completed by James, I would recommend him to anyone. He made an easy to understand quote. He arrived in a timely manner and was very thorough. He even helped reset my dad’s VHS, so he could watch his old German videos. James went above and beyond our expectations.
Kerry Jachmann profile pictureKerry Jachmann
04:42 28 Nov 25
Love the same day service. Lovely staff who communicated well. It was great to overhear the tradesman teaching the apprentice in a kind, helpful and respectful manner. 100% happy.
George Apollo profile pictureGeorge Apollo
08:59 29 Oct 25
Nick is a good tradesman he was on time explained what was needed and how to future proof the work for years ahead and was in accordance with mutual agreement by everyone including my parents.
Overall fast and efficient and courteous happy with the service , thanks , good job by the way the telephonists were helpful too.
Allie Mackie profile pictureAllie Mackie
00:56 02 Oct 25
The boys did an awesome sleuthing job and found our leak ! Thrilled cos we were leaving for away and were totally stressed put! Very lovely quick and professional! Highly recommend Daniel and his team!
Judy profile pictureJudy
08:03 11 Jul 25
Matt did a fantastic job fixing my switchboard
Nicole Black profile pictureNicole Black
06:28 11 Jul 25
I can not fault the service we have received today and over the last couple of years. From the quoting process to the job being completed; the tradies have been polite, female friendly and provide a high standard of work. They even clean up after themselves! Thank you Nick for your work and quote today. We most certainly will be seeking Same Day Trades expertise again.
Wendy Farrell profile pictureWendy Farrell
06:14 11 Jul 25
Happy with Cameron's service!
Nigel Greenhalgh profile pictureNigel Greenhalgh
04:40 11 Jul 25
From my phone call for your services was Good
Your employees did a Good job Good communication Thank you for Helping out
Photo from customer review
Response from the owner 05:14 11 Jul 25
Hi Nigel,Thank you for your kind words! We're glad to hear your experience—from the initial phone call to the completion of the job—was a positive one. Great communication and quality service are what we strive for, and we’re happy we could help. If you ever need plumbing or electrical work in the future, please don’t hesitate to contact us!Kind Regards,Same Day Trades
Neil John4 profile pictureNeil John4
04:25 11 Jul 25
Flynn and Dylan were both very friendly and very efficient. When the work was completed, they explained the changes clearly. Very Good!
Response from the owner 05:01 11 Jul 25
Hi Neil,Thank you for your great feedback! We're so pleased to hear that Flynn and Dylan were both friendly and efficient, and that they took the time to clearly explain the work once it was completed. We really value your support! If you ever need plumbing or electrical work in the future, please don’t hesitate to contact us!Kind Regards,Same Day Trades
Joy Schofield profile pictureJoy Schofield
02:26 11 Jul 25
Jacob & Ben pleasant helpful, efficient service. Thankyou
Response from the owner 03:45 11 Jul 25
Hi Joy,Thank you for your kind words! We're glad to hear Jacob and Ben provided pleasant, helpful, and efficient service. We really appreciate you taking the time to share your experience. If you ever need plumbing or electrical work in the future, please don’t hesitate to contact us!Kind Regards, Same Day Trades
Rowland Monnery profile pictureRowland Monnery
00:13 11 Jul 25
Lachlan and his team did an excellent job installing my new hot water system, from the initial meeting to the completion of the job, Lachlan and his team were friendly and professional in their field of work, having changed from gas to electric hot water, Lachlan and his team removed all the old gas lines and cleaned up the remaining lines to leave a clean finish, very happy with the service, if you need a new hot water system, gas or electric, I highly recommend samedaytrades.
Response from the owner 03:42 11 Jul 25
Hi Rowland,Thank you so much for your fantastic feedback! We're thrilled to hear you had such a positive experience with Lachlan and the team. From the initial consultation to the final clean-up, it's great to know our team's professionalism and attention to detail made the transition from gas to electric hot water seamless for you. We truly appreciate your recommendation – it means a lot to us. If you ever need plumbing or electrical work in the future, please don’t hesitate to contact us!Kind Regards,Same Day Trades
Carol Esson profile pictureCarol Esson
06:34 10 Jul 25
Thank you Matt for fixing our fly screen door and for coming out so quickly!
Trevor Hill profile pictureTrevor Hill
05:06 10 Jul 25
Matt M from Same Day Trades arrived on time and sorted out our blocked sewage problem in a very friendly and efficient manner. Great service which was much appreciated.

Get Quote Now