If your wall mounted split system has been working hard to keep you cool, it’s time to give it a little attention in return. One of the simplest yet most important things you can do is clean the air filter. Over time, dust and debris build up in the filter and start making your system work harder than it should. That can lead to higher power bills, weaker airflow and even funky smells circulating around your home. The good news is that cleaning the filter is quick, easy and doesn’t actually require any special tools or technical know how. This small guide will walk you through the whole process step by step so you can take care of it confidently and enjoy fresh, clean air all year round.
Step 1: Power Off the Unit
Before you do anything else, switch off your air conditioner. Use your remote or the wall controller to power it down, and give it a minute or two to fully shut off. This makes it safe to handle and ensures you’re not dealing with moving parts or electrical hazards. Once it’s off, wait until you no longer hear any sound from the indoor unit or the outdoor compressor. It’s always better to be cautious before reaching up and opening anything.
Step 2: Open the Front Panel
Grab a sturdy step ladder and position it directly under the unit so you can easily reach it. Most indoor split systems have a front panel that can be gently lifted up from the bottom. Use both hands to unclip or slide it open. You’ll usually hear a small ‘click’ when it releases. Inside, you’ll see the filter sitting in place which is typically a flat mesh screen that runs the width of the unit. Some models might have a protective cover over the filter, which will need to be removed first.
Step 3: Take Out the Filter
Carefully slide the filter out of its housing, and it should come out easily with just a gentle pull. If you feel any resistance, stop and double check that nothing is obstructing it. There’s no need to force anything. Once it’s out, take a moment to inspect it. You’ll probably see a fair amount of dust, lint and possibly even some pet hair if you have furry friends at home. This buildup is exactly what you want to get rid of, so your unit can breathe properly again.
Step 4: Give It a Thorough Clean
Take the filter outside if possible as this helps avoid spreading dust indoors. The easiest way to clean it is to use a vacuum cleaner with a soft brush attachment to gently lift the dust and dirt off the mesh. If it’s particularly grimy, rinse it under lukewarm water or use a hose with light pressure. Don’t use hot water or any harsh detergents as they can damage the filter’s material. Once it’s clean, give it a gentle shake and leave it to air dry completely. Avoid putting a damp filter back into the unit, as moisture can lead to mould or damage.
Step 5: Reinstall and Reset
Once the filter is completely dry, slide it back into its original position. It should slot in smoothly without needing to force it. Close the front panel of the unit and make sure it clicks shut. If your model has a reset function for the filter (some remotes will flash a notification), follow the instructions in your manual to clear that alert. Now you can power the system back on and enjoy noticeably better airflow and cleaner air in your space.
Stay on Top of Air Con Maintenance
Cleaning your air conditioner filter isn’t something you have to do weekly, but it is worth setting a reminder for. Every 3 to 6 months is a good starting point, especially if you use your system regularly, have pets or live in a dusty area. Staying on top of it helps keep your system running efficiently, reduces wear and tear, and helps maintain good air quality indoors.
If you’ve noticed your air conditioner is still underperforming after a clean, maybe it’s noisy, blowing warm air or constantly cycling, it could be time for a professional check up. And that’s where we come in. We offer full air conditioning servicing, repairs if needed and installations for Daikin and other major systems across the Sunshine Coast. If in doubt, give us a call and we’ll get your system sorted quickly and reliably.