Air purifier filter
Blueair Classic 400 series DualProtection filter
402DPF
Fits 8 models · replace every 6 months
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GenuineGenuine Blueair
$129.99
Blueair Au · 22 OctLowest genuine · Blueair Au · checked 22 Oct
CompatibleCompatible option
$70.99
Amazon AU · 5 OctAmazon AU · checked 5 Oct
Check sellerCheck seller details
Genuine: made by Blueair. Compatible: another brand. Check certification on the seller's page.Genuine is made by Blueair. Compatible is made by another brand. Check the seller's certification details before choosing.
Lowest compatibleLowest compatible price · $70.99
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Compare 3 sellers
AUD, before delivery. Each price shows when it was checked.
Compatible options
2 sellers
Opens Amazon AU in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Usually every 6 months. The filter light is a reminder, not a water-quality sensor.
After replacing: Press and hold the button until the filter light goes out (about 5 seconds).
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 6 months. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the 402DPF filter
Watch the guide or follow the steps.
- 1Switch the purifier off and unplug it.
- 2Grip the edges of the front grille and pull it straight off (it is held by magnets). On 400/500/600 units do the same at the back.
- 3Slide the old flat filter(s) out and slide the new ones in the same way round, pleats facing out.
- 4Push the grilles back on, plug in, and hold the button until the filter light goes out.
Every number this part goes by
- Retail name:
- 103769
- Retail name:
- 402 DPF
- Retail name:
- 402DPF
Sellers list any of these; they are the same part.
Will it fit your appliance?
Type your model number and we'll check it against the makers' lists.
Fits these 8 Blueair models
Blueair8 models
Alternative to 402PF in the same slot.
Common questions
- Which filter fits the Blueair 402DPF?
- The Blueair 402DPF takes the Blueair Classic 400 series DualProtection filter (part 402DPF). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my Blueair 402DPF?
- Every 6 months. Flow slows and performance drops off as the filter fills up, so it's worth doing on time.
- Where can I buy the 402DPF in Australia?
- We track 3 Australian sellers for the 402DPF; the lowest listed price when we last checked was A$70.99 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the 402DPF in a Blueair 402DPF?
- 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?
- Press and hold the button until the filter light goes out (about 5 seconds).
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