Air purifier filter
Blueair Classic 500/600 series Particle filter set (3)
501PFK
Fits 13 models · replace every 6 months
Wrong part, or your model missing? Tell us. A person checks every report.
GenuineGenuine Blueair
$99.99
Blueair Au · 22 OctLowest genuine · Blueair Au · checked 22 Oct
CompatibleCompatible option
$39.67 each
3-pack $119.01
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 · $39.67 each · 3-pack $119.01
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AUD, before delivery. Each price shows when it was checked.
Compatible options
1 seller
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 501PFK 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:
- 501 PFK
- Retail name:
- 501PFK
- Retail name:
- Classic 500 particle filter
- Retail name:
- Classic 600 particle filter
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 13 Blueair models
Common questions
- Which filter fits the Blueair 501PFK?
- The Blueair 501PFK 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 501PFK?
- 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 2 Australian sellers for the 501PFK; the lowest listed price when we last checked was A$39.67 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the 501PFK in a Blueair 501PFK?
- 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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