The Winix AUS-0850AAPU takes the Winix GQ Filter Pack (Compact 4-stage AUS-0850AAPU) as its filter; replace it every 12 months; Australian sellers list it from A$34.90 as of 5 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your air purifier
Winix AUS-0850AAPU
Air purifier
Confirmed against Winix's listConfirmed against Winix Australia's compatibility list
Not yours? ChangeSave it · remind me every 12 months
Takes the GQ-FILTER filter
GQ Filter Pack (Compact 4-stage AUS-0850AAPU) · replace every 12 months · check the code printed on your old filter before ordering.
Your air purifier
Air purifier
Confirmed against Winix's listConfirmed against Winix Australia's compatibility list
Takes the GQ-FILTER
Filter · every 12 months · check the code on your old filter.
Other Winix air purifiers and their filters
The GQ-FILTER fits the AUS-0850AAPU only. These Winix models take a different filter:
GenuineGenuine Winix
$79.99
Amazon AU · 5 OctLowest genuine · Amazon AU · checked 5 Oct
CompatibleCompatible option
$34.90
Bunnings · 5 OctBunnings · checked 5 Oct
Check sellerCheck seller details
Genuine: made by Winix. Compatible: another brand. Check certification on the seller's page.Genuine is made by Winix. Compatible is made by another brand. Check the seller's certification details before choosing.
Lowest compatibleLowest compatible price · $34.90
Bunnings. Compare with genuine below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Compare 5 sellers
AUD, before delivery. Each price shows when it was checked.
Compatible options
2 sellers
Genuine Winix
3 sellers
Opens Bunnings in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Usually every 12 months. The filter light is a reminder, not a water-quality sensor.
After replacing: 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.
Not due yet?
Get a nudge when your filter is due — it's every 12 months. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the filter in your Winix AUS-0850AAPU
Watch the guide or follow the steps.
- 1Switch the purifier off and unplug it.
- 2Twist or lift the top cover off and lift the old cylindrical filter set out.
- 3Take the new filters out of their plastic bags and drop them in with the pull tab up.
- 4Put the cover back, plug in, and hold the filter reset button until the filter light goes out.
Every number this part goes by
- Retail name:
- GQ
- Retail name:
- GQ-FILTER
Sellers list any of these; they are the same part.
About your Winix AUS-0850AAPU
Winix air purifier, air purifier — Compact 4-stage. Its filter is the GQ Filter Pack (Compact 4-stage AUS-0850AAPU), part GQ-FILTER, changed every 12 months.
Where the model number is: 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 1 Winix model
Winix1 model
Common questions
- Which filter fits the Winix AUS-0850AAPU?
- The Winix AUS-0850AAPU takes the Winix GQ Filter Pack (Compact 4-stage AUS-0850AAPU) (part GQ-FILTER). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my Winix AUS-0850AAPU?
- 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 GQ-FILTER in Australia?
- We track 5 Australian sellers for the GQ-FILTER; the lowest listed price when we last checked was A$34.90 at Bunnings. Prices are re-checked daily and dated on this page.
- How do I fit the GQ-FILTER in a Winix AUS-0850AAPU?
- No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- The fan works harder for less airflow, and the carbon layer stops taking smells out well before the filter looks dirty.
- How do I reset the filter light?
- After fitting, hold the filter reset button until the filter light goes out.
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