Winix AUS-9500 filter
The Winix AUS-9500 takes the Winix 21WC Filter Cartridge Pack (9500 Ultimate AUS-9500) (part 21WC-FILTER) as its filter; replace it every 12 months; Australian sellers list it from A$159.00 as of 1 August 2026. Fitment confirmed against the manufacturer's compatibility list.
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Your air purifier
Winix AUS-9500
Air purifier · 9500 Ultimate 5-stage
Takes this filter
21WC Filter Cartridge Pack (9500 Ultimate AUS-9500)
21WC-FILTER
The right filter for AUS-9500
Winix 21WC Filter Cartridge Pack (9500 Ultimate AUS-9500)
- Replace every 12 months
- Fits inside the fridge
- Fits 1 model
The replacement cartridge pack for the Winix 9500 Ultimate (AUS-9500): washable pre-filter, hospital-grade True HEPA filter, washable activated-carbon filter and the anti-bacterial mesh shield.
Reduces
- Fine dust, pollen and allergens
- Odours and gases (activated carbon)
- Pack
- Pre-filter, HEPA, carbon filter and mesh shield
- Lasts
- 12 months
Every number this part goes by
- Retail name:
- 21WC
Where to buy
Every seller we track for this part, cheapest first. Genuine is the manufacturer's own part; compatible is a third-party filter made to fit. Prices are re-checked daily where the seller publishes them. Last checked 1 August 2026.
How long it lasts
Replace every 12 months — the appliance's filter light tells you when.
After fitting: After fitting, hold the filter reset button until the filter light goes out.
Flow slows and taste drops off as the filter fills up. Changing on time is the whole point of the filter.
Not due yet?
This filter is due every 12 months. We'll email you when it's time — free, no spam.
Fitting it
A few minutes, no tools. Watch it done, then follow the steps.
We haven't found a clear video for this filter yet. The steps on the right cover it.
- 1Switch the purifier off and unplug it.
- 2Pull the front panel off from the bottom edge and lift out the old filters in order: pre-filter, carbon filter, then HEPA filter.
- 3Take the new filters out of their plastic bags and fit them the same order and way round — HEPA at the back, carbon in front, pre-filter last.
- 4Refit the panel, plug in, and hold the filter reset button until the filter light goes out.
About your Winix AUS-9500
Winix air purifier, air purifier — 9500 Ultimate 5-stage. Its filter is the 21WC Filter Cartridge Pack (9500 Ultimate AUS-9500), part 21WC-FILTER, changed every 12 months.
Checking the model number: Look at the rating label on the back or the underside of the purifier: the model is the type code (AUS-1250AZPU, WXAP800W, 5500-2), not the marketing name. The filter pack code (GT, GI, GQ…) is printed on the old filter's frame.
Fits these models
Winix1 model
Common questions
- Which filter fits the Winix AUS-9500?
- The Winix AUS-9500 takes the Winix 21WC Filter Cartridge Pack (9500 Ultimate AUS-9500) (part 21WC-FILTER). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my Winix AUS-9500?
- Every 12 months. Flow slows and performance drops off as the filter fills up, so it's worth doing on time.
- Where can I buy the 21WC-FILTER in Australia?
- We track 1 Australian seller for the 21WC-FILTER; the lowest listed price when we last checked was A$159.00 at ausclimate. Prices are re-checked daily and dated on this page.
- How do I fit the 21WC-FILTER in a Winix AUS-9500?
- No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
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