Air purifier filter · Blueair
Blueair AllergenBlock filter (Blue Pure 411 / 411+ / 411 Auto)
- Replace every 6 months
- Fits inside the fridge
- Fits 3 models
Blueair's AllergenBlock filter for the Blue Pure 411, 411+ and 411 Auto: an allergy-focused alternative to the standard Particle + Carbon filter, fitting the same slot. Choose one main filter, not both.
Reduces
- Pollen, dust-mite matter and pet dander (allergen-focused)
- Fine dust and smoke
- Fits
- Blue Pure 411, Blue Pure 411+, Blue Pure 411 Auto
- Alternative to
- 411 Particle + Carbon
Every number this part goes by
- Retail name:
- 411 AllergenBlock
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 6 months — the appliance's filter light tells you when.
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 6 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.
- 2Lift the top section straight up off the base.
- 3Lift the old cylindrical filter out, unwrap the new one and drop it in.
- 4Refit the top, plug in, and hold the button until the filter light goes out.
Will it fit your appliance?
Type your model number and we'll check it against our fitment database.
Fits these models
Blueair3 models
Alternative to F411PACF102174 in the same slot.
Common questions
- Which filter fits the Blueair 110671?
- The Blueair 110671 takes the Blueair AllergenBlock filter (Blue Pure 411 / 411+ / 411 Auto) (part 110671). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my Blueair 110671?
- 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 110671 in Australia?
- We track 1 Australian seller for the 110671; the lowest listed price when we last checked was A$37.99 at blueair-au. Prices are re-checked daily and dated on this page.
- How do I fit the 110671 in a Blueair 110671?
- No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
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