Air purifier air filter · Blueair
Blueair fabric pre-filter (Blue Pure 311 Auto)
- Replace every 12 months
- Fresh-air filter
- Fits 1 model
The washable fabric sleeve that wraps the base of the Blue Pure 311 Auto. It catches hair and lint before the main filter, comes in several colours, and is machine-washable; buy a new one when it is worn or you want a different colour.
Reduces
- Hair, lint and large dust before the main filter
- Colours
- Winter Reed, Archipelago Sand, Aurora Light, Night Waves, Arctic Trail
- Care
- Machine-wash; no replacement interval
Every number this part goes by
- Retail name:
- 105731
- Retail name:
- 105732
- Retail name:
- 105733
- Retail name:
- 105734
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 (Washable; replace when worn or to change colour).
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.
- 1Lift the top section off the purifier.
- 2Pull the old fabric pre-filter down and off the base; stretch the new one on with the seam at the back.
- 3Refit the top. No reset is needed; wash the sleeve when it looks dusty.
Will it fit your appliance?
Type your model number and we'll check it against our fitment database.
Fits these models
Blueair1 model
Common questions
- Which air filter fits the Blueair 105735?
- The Blueair 105735 takes the Blueair fabric pre-filter (Blue Pure 311 Auto) (part 105735). Compatible filters made to the same specification also fit.
- How often should I replace the air filter in my Blueair 105735?
- 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 105735 in Australia?
- We track 1 Australian seller for the 105735; the lowest listed price when we last checked was A$10.99 at blueair-au. Prices are re-checked daily and dated on this page.
- How do I fit the 105735 in a Blueair 105735?
- No tools, a few minutes: 3 steps, listed on this page with the replacement video where the maker has one.
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