How to Clean Different Types of Air Conditioners
A well-maintained AC not only keeps your indoor spaces comfortable but also improves air quality and prolongs the lifespan of your system. Across Australian homes and offices, split systems, ducted air conditioners, portable units, and wall-mounted setups each have unique cleaning needs. Learning the right cleaning methods for your specific unit ensures efficient performance and healthier air throughout the year.
Safety First: Precautions Before Cleaning
Before tackling any air conditioner, safety is essential. Always switch off and unplug your unit to prevent accidents. Gloves and a mask are recommended, especially when dealing with dust, debris, or mould. Avoid harsh chemicals that could damage sensitive components, and ensure the area is well-ventilated when spraying cleaning solutions. Checking the manufacturer’s manual for specific cleaning instructions can prevent mistakes and protect your warranty. Taking a few minutes to set up safely ensures your cleaning session goes smoothly and without risk.
Cleaning a Split System Air Conditioner
Split systems are the most common in Australian households. Wall-mounted, efficient, and relatively easy to maintain, these units consist of indoor and outdoor components that each need attention.
Step 1: Remove and clean the air filters
Rinse filters with warm water and mild detergent, then allow them to air-dry completely before reinstalling. Monthly attention during the summer months keeps airflow steady and prevents dust buildup.
Step 2: Clean the evaporator coil and fan
Use a soft brush or vacuum attachment to remove dust and grime. For stubborn debris, a no-rinse foaming coil cleaner can do wonders without harming delicate components.
Step 3: Outdoor condenser unit
Remove leaves, twigs, and accumulated dirt. Use a garden hose on low pressure to rinse the coils carefully—avoiding bent fins, which can reduce efficiency.
Step 4: Wipe and disinfect the outer casing
A damp cloth with mild detergent is sufficient. Avoid abrasive cleaners that could scratch or damage the surface.
Tips: Clean filters monthly and schedule a professional deep clean at least once a year. A well-maintained split system runs quieter, uses less energy, and keeps indoor air healthier.
Cleaning Ducted Air Conditioning Systems
Ducted AC systems cool entire homes or offices through an extensive network of ducts. Cleaning requires a more professional approach due to the complexity and inaccessibility of components.
Step 1: Replace or clean air filters
Filters are usually located in return air vents. Washable filters can be cleaned with warm water, while non-washable types require replacement.
Step 2: Clean the vents and ducting
Dust and debris accumulate in vent covers. Vacuuming these helps prevent dirt from spreading throughout your home. Professional duct cleaning every 3–5 years ensures thorough sanitation and airflow.
Step 3: Condenser and evaporator coils
These components are often in roof cavities or plant rooms. Light dusting may be possible, but heavy cleaning should be left to experts to prevent damage.
Tips: Watch for mould or lingering odours, as ducted systems can distribute contaminants widely. Properly sealed filters prevent dust bypass and maintain efficiency.
Cleaning Portable Air Conditioners
Portable AC units are handy for single rooms, but they need regular attention to remain effective.
Step 1: Empty the water reservoir
Standing water can foster mould and bacterial growth. Regular draining is essential.
Step 2: Clean air filters
Most filters are removable and washable. Use warm water and mild soap, then air-dry before reinstalling.
Step 3: Wipe internal and external surfaces
A damp cloth and gentle detergent keep surfaces clean without damaging the unit.
Step 4: Condenser coil care
Gently vacuum or brush off dust from the coil to maintain efficiency.
Tips: Check exhaust hoses for blockages and perform a thorough cleaning at the start and end of each cooling season.
Cleaning Wall-Mounted Air Conditioners
Wall-mounted units are similar to split systems but may vary in height or configuration, affecting accessibility.
Step 1: Remove filters
Wash and air-dry filters before reinstalling. Clean filters monthly in summer for smooth airflow.
Step 2: Evaporator coil and fan
Dust accumulates in coils and fans, which can be removed with a soft brush or vacuum attachment.
Step 3: Exterior surfaces
Wipe down with a damp cloth. Avoid harsh cleaners that may damage finishes.
Step 4: Check drainage
Ensure the drain pipe is clear to prevent leaks and water damage.
Tips: Professional deep cleans every 12 months, keep wall-mounted units running efficiently and quietly.
Common Mistakes to Avoid When Cleaning AC Units
Using high-pressure water can bend or damage coils.
Forgetting to turn off the power risks electric shock.
Ignoring filter maintenance, which reduces airflow and efficiency.
Overusing chemical cleaners can corrode internal components.
Neglecting the outdoor condenser leads to overheating and poor performance.
Avoiding these mistakes ensures a smoother cleaning process and longer-lasting performance.
Benefits of Regular Air Conditioner Cleaning
Regular cleaning has immediate and long-term benefits:
Improved cooling efficiency and reduced energy costs.
Cleaner air, reducing allergens and dust in your home.
Prolonged lifespan of your air conditioner.
Prevention of unpleasant odours from mould or stagnant water.
Fewer expensive repairs and system breakdowns.
A consistent cleaning routine keeps both your indoor environment comfortable and your AC unit operating at peak performance.
When to Call a Professional
Certain situations require expert intervention:
Heavily soiled or damaged coils.
Persistent odours or mould inside the unit.
Difficulty accessing internal components.
Ducted or complex split system units.
Professional services offer thorough deep cleaning and minimise the risk of damaging sensitive components while complying with warranty requirements.
AirCon-men Services Spotlight
Aircon-Men provides expert Premium Split System Deep Clean services, handling every component from evaporator and condenser coils to filters and exterior surfaces. For a simpler maintenance routine, check out their Basic Split System Clean at Airconmen Basic Clean. Contact our team for professional, hassle-free service that keeps your air conditioner running efficiently and your home comfortable.
FAQs
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Filters should be cleaned monthly during peak seasons, and a deep clean should be performed at least once a year or as recommended by the manufacturer.
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Mild detergents are safe. Avoid abrasive or harsh chemical cleaners that could damage delicate components.
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Professional cleaning is essential for ducted systems and beneficial for split or wall-mounted units with heavy use.
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Yes, clean filters and coils ensure efficient air distribution and better cooling performance.
