How to Clean Your Air Con Filter: Split System Maintenance Guide
When was the last time you cleaned your split system air conditioner filter? For many Perth households, it’s a job that often gets overlooked—but dirty filters can reduce airflow, spread dust, and force your air con to work harder than it should. Regular cleaning is one of the easiest ways to improve performance, extend the life of your unit, and keep your indoor air healthy.
In this guide, we’ll walk you through how to clean your air con filter step by step, how often to do it, and why it’s essential for efficient cooling and heating.
Why Cleaning Your Air Con Filter Matters
Your split system filter is designed to trap dust, dirt, and allergens before they circulate through your home. When filters are clogged:
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Airflow is restricted, making your unit work harder.
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Energy consumption increases, leading to higher bills.
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Dust, bacteria, and allergens are blown back into your home.
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Your air conditioner’s lifespan may be shortened.
By simply cleaning the filter every few months, you’ll maintain cleaner air and a more efficient system.
How Often Should You Clean Your Air Con Filter?
For most Perth homes, cleaning your split system filter every 3–4 months is recommended. If you live near the coast, have pets, or suffer from allergies, you may need to clean it more often. During peak summer and winter, when your air con is running daily, monthly cleaning can make a big difference.
Step-by-Step Guide to Cleaning Your Split System Air Con Filter
Cleaning your air conditioner filter is straightforward and only takes a few minutes. Here’s how:
1. Switch Off Your Air Conditioner
For safety, always turn off your split system at the wall before starting.
2. Open the Front Panel
Gently lift or unclip the front cover of your indoor unit. This will give you access to the filters.
3. Remove the Filters
Carefully slide out the mesh filters. Most split system units have one or two reusable filters.
4. Vacuum Dust and Debris
Use a vacuum with a soft brush attachment to remove loose dust, hair, and particles.
5. Wash with Warm Soapy Water
If your filter is especially dirty, rinse it in warm water with mild detergent. Avoid using hot water or harsh chemicals as they can damage the mesh.
6. Dry Completely
Leave the filter to air dry in a shaded area. Never place it in direct sunlight or use a hair dryer—it can warp the material.
7. Reinsert the Filter
Once fully dry, slide the filter back into the unit and close the cover securely.
Signs Your Air Con Filter Needs Cleaning
You don’t have to wait for a scheduled clean. Look out for these signs that your filter may be clogged:
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Reduced airflow even when the unit is set to high.
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Strange smells when your air con is running.
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Visible dust build-up on the unit or vents.
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Higher electricity bills despite normal usage.
Can You Replace Your Filter Instead of Cleaning It?
Yes, some split system models allow filter replacement if they are damaged or heavily worn. However, most units in Perth use washable filters, which can last for years with regular maintenance. If your filter looks torn or beyond cleaning, speak to your local air conditioning installer about a replacement.
Professional Split System Maintenance in Perth
While regular filter cleaning is something every homeowner can do, your air conditioner also needs professional servicing to keep it in top shape. At Air-Cond Installs WA, we recommend a full service every 12–18 months, which includes:
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Deep cleaning of internal components.
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Refrigerant checks and top-ups.
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Inspection for leaks or worn parts.
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Ensuring peak energy efficiency.
This not only extends the life of your unit but also prevents costly breakdowns during Perth’s hot summers and cool winters.
Need Split System Services in Perth?
Cleaning your air con filter is quick, easy, and one of the most important steps in maintaining your split system air conditioner. By doing it regularly, you’ll enjoy fresher air, lower energy bills, and a longer-lasting unit.
If it’s been a while since your air con had a professional service—or if you’re looking to install a new split system—our team at Air-Cond Installs WA is here to help.
Book your split system service or installation today and keep your home comfortable all year round.
