Perth's climate means air conditioning runs hard — and dirty AC filters are a commonly noted item on exit condition reports. It's a quick clean that most tenants either skip or do poorly. Here's what's required.
What Gets Checked
Property managers look at:
- Indoor unit filter — dusty or clogged filters are the most common issue
- Indoor unit housing — exterior panel wiped clean
- Vents and louvres — dust buildup visible from the floor
- Outdoor condenser unit — exterior wiped and free of debris
How to Clean a Split System Filter
- Switch the unit off at the wall
- Open the front panel — it usually clips or slides open
- Remove the filter panels — they slide or clip out
- Take them outside and tap gently to remove loose dust
- Wash with warm water and mild dish soap — rinse thoroughly
- Allow to dry completely before replacing — a damp filter put back into a unit can cause mould
- Wipe the interior of the unit with a dry cloth
- Wipe the exterior panel and louvres
Ducted Air Conditioning
For ducted systems, the return air filter is usually located in a ceiling vent in the main living area or hallway. It looks like a large grille. Unclip, remove the filter, wash, dry, and replace. The supply vents throughout the house should also be wiped clean of dust.
When Filters Need Replacing
Most residential AC filters can be washed multiple times before needing replacement. If a filter is torn, has holes, or is so clogged that washing doesn't restore it, it needs replacing. Filters are inexpensive ($10–$30 from appliance stores or online) and are worth replacing rather than arguing about at exit.
Professional Cleaning
If the air conditioning system has been running for years without filter cleaning and there's significant mould or buildup inside the unit, a professional AC clean (separate to a bond clean) may be needed. Costs range from $80–$150 per unit. For a straightforward filter clean, it's included as part of our standard bond cleaning service.
We respond within 1 hour, 7 days a week.