Blueair Classic 690i filter
The Blueair Classic 690i takes the Blueair Classic 500/600 series Particle filter set (3) (part 501PFK) as its filter; replace it every 6 months; Australian sellers list it from A$99.99 as of 1 August 2026. This fit is listed by sellers and not yet confirmed against the manufacturer's list.
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Your air purifier
Blueair Classic 690i
Air purifier · Classic 600
Takes this filter
Classic 500/600 series Particle filter set (3)
501PFK
Listed by sellers as compatible, not yet confirmed against the manufacturer's list — check the code on your old filter.
The right filter for Classic 690i
Blueair Classic 500/600 series Particle filter set (3)
- Replace every 6 months
- Fits inside the fridge
- Fits 4 models
The set of three particle filters (with carbon sheet) for Blueair Classic 500 and 600 series purifiers (505, 605, 680i, 690i); the machine holds all three. Change every six months.
Reduces
- Fine dust, pollen and allergens
- Light odours (carbon sheet)
- Pack
- 3 filters
- Fits
- Classic 500 and 600 series
- Lasts
- 6 months
Every number this part goes by
- Retail name:
- 501 PFK
- Retail name:
- Classic 500 particle filter
- Retail name:
- Classic 600 particle filter
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.
After fitting: 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 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.
- 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.
About your Blueair Classic 690i
Blueair air purifier, air purifier — Classic 600. Its filter is the Classic 500/600 series Particle filter set (3), part 501PFK, changed every 6 months.
Also in this air purifier: Blueair Classic 500/600 series DualProtection filter set (every 6 months). Worth replacing together — one job, not two.
Checking the model number: The model number is on the rating label on the bottom or back of the purifier; the old filter usually has its own code printed on the frame.
Fits these models
Blueair4 models
Common questions
- Which filter fits the Blueair Classic 690i?
- The Blueair Classic 690i takes the Blueair Classic 500/600 series Particle filter set (3) (part 501PFK). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my Blueair Classic 690i?
- 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 501PFK in Australia?
- We track 1 Australian seller for the 501PFK; the lowest listed price when we last checked was A$99.99 at blueair-au. Prices are re-checked daily and dated on this page.
- How do I fit the 501PFK in a Blueair Classic 690i?
- No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
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