Philips AC0921 filter
The Philips AC0921 takes the Philips FY0900/30 HEPA NanoProtect Filter (900 / 800 Series) (part FY0900/30) as its filter; replace it every 12 months. Fitment confirmed against the manufacturer's compatibility list.
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Your air purifier
Philips AC0921
Air purifier · 900 Series
Takes this filter
FY0900/30 HEPA NanoProtect Filter (900 / 800 Series)
FY0900/30
The right filter for AC0921
Philips FY0900/30 HEPA NanoProtect Filter (900 / 800 Series)
- Replace every 12 months
- Fits inside the fridge
- Fits 5 models
The HEPA NanoProtect filter for the 900 Series (AC0920, AC0921) and the earlier 800 Series (AC0817, AC0819, AC0820). One cylindrical filter; Philips rates it for a year.
Reduces
- Fine dust, pollen and allergens
- Bacteria and viruses (NanoProtect HEPA)
- Pack
- 1 filter
- Lifespan
- Up to 1 year (Philips)
Every number this part goes by
- Retail name:
- FY0900
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 6 September 2026.
How long it lasts
Replace every 12 months — the appliance's filter light tells you when.
After fitting: Hold the filter reset button for about 3 seconds after fitting the new filter.
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.
- 1Switch the purifier off and unplug it.
- 2Lift the top cover off and lift the old cylindrical filter out.
- 3Take the new filter out of its plastic bag and drop it in with the tab facing up.
- 4Put the cover back, plug in, and hold the filter reset button for about 3 seconds until the filter alert clears.
About your Philips AC0921
Philips air purifier, air purifier — 900 Series. Its filter is the FY0900/30 HEPA NanoProtect Filter (900 / 800 Series), part FY0900/30, changed every 12 months.
Checking the model number: Tip the purifier back or turn it over: the type number (AC…/70, AC…/10, AMF…) is on the rating label on the bottom of the unit. The filter's own code (FY…/30) is printed on the old filter's frame.
Fits these models
Common questions
- Which filter fits the Philips AC0921?
- The Philips AC0921 takes the Philips FY0900/30 HEPA NanoProtect Filter (900 / 800 Series) (part FY0900/30). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my Philips AC0921?
- 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 FY0900/30 in Australia?
- We link to 1 Australian seller for the FY0900/30; the seller's page shows the current price.
- How do I fit the FY0900/30 in a Philips AC0921?
- No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
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