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Standard replacement filter set

Blueair Classic 500/600 Series Particle Filter – 501PFK replacement filter

Classic 500/600 Series Particle Filter (501PFK) fits Blueair Classic 501, Blueair Classic 503, Blueair Classic 505 and 9 more models according to the cited Blueair source.

Official manufacturer Classic 500/600 Series Particle Filter 501PFK Check official Blueair availability Non-affiliate link to the cited official product page.
Marketplace search Check eBay prices for 501PFK Sponsored eBay links. We may earn a commission from qualifying purchases.

Quick fit check

Classic 500/600 Series Particle Filter fit and replacement facts

Part number501PFK
Compatible models12
Filter roleStandard replacement filter set

Blueair recommends replacing the filter set every 6 months under continuous operation.

Compatible Blueair models

Follow a model link for its complete primary, optional, specialty, and alternative filter list.

Model Filter Part number Role Source Marketplace
Blueair Classic 501 Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 503 Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 505 Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 510 Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 550E Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 555EB Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 580i Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 601 Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 603 Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 605 Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 650E Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices
Blueair Classic 680i Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Blueair Official Classic 500/600 Series Particle Filter Check prices

Buying checklist

What to check in a filter listing

Confirm that the listing names part 501PFK and one of the compatible models: Blueair Classic 501, Blueair Classic 503, Blueair Classic 505 and 9 more models. Similar-looking filters are not proof of fit.

Decide whether you want an OEM or aftermarket filter, then compare the included pieces, product photos, seller details, delivery estimate, and total price.

Care guidance

Replacement schedule

Blueair recommends replacing the filter set every 6 months under continuous operation.

Usage conditions can affect service life. Follow the cited manufacturer guidance for this part.

Compare compatible options

These filters share at least one officially cited model within the same brand, but may serve a different primary or optional role. Check each part page before buying.

Frequently asked questions

How often should I replace the Blueair Classic 500/600 Series Particle Filter (501PFK)?

Blueair recommends replacing the filter set every 6 months under continuous operation.

Which Blueair models use the Classic 500/600 Series Particle Filter 501PFK?

According to the official Blueair product page, Classic 500/600 Series Particle Filter (501PFK) fits Blueair Classic 501, Blueair Classic 503, Blueair Classic 505 and 9 more models. Verify the model label on your unit before ordering.

Do aftermarket 501PFK filters work?

Marketplace listings may be from the manufacturer or a third party. Match the exact part number 501PFK, review the listing details, and verify the model label on your unit before buying.

Manufacturer source

Official Blueair documentation identifies Classic 500/600 Series Particle Filter set, SKU 501PFK, as compatible with Classic 501, Classic 503, Classic 505, Classic 510, Classic 550E, Classic 555EB, Classic 580i, Classic 601, Classic 603, Classic 605, Classic 650E, and Classic 680i.

Blueair Official Classic 500/600 Series Particle Filter

Source compatibility checked 2026-07-22. Recheck the listing and your purifier label before ordering.