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Blueair air purifier

Blueair Classic 680i replacement filter

Blueair Classic 680i uses Classic 500/600 Series Particle Filter (part 501PFK) as its primary replacement filter set.

Official Blueair fit · checked

Same filter, other models

Other Blueair purifiers that use Classic 500/600 Series Particle Filter 501PFK

Own more than one purifier? These models share the same official part number.

All compatible Blueair Classic 680i filters

Primary filters are listed first. Specialty, optional, and alternative filters also fit, but you only need them if you want that feature.

Filter Part number Type Price
Classic 500/600 Series Particle Filter 501PFK Standard replacement filter set Check price
Classic 500/600 Series DualProtection Filter 103770 Alternative DualProtection replacement filter set Check price

Price links open sponsored eBay searches for the exact part number.

Before you order

How to buy the right Blueair Classic 680i filter

  • Confirm the label on your purifier reads Classic 680i.
  • Make sure the listing names part 501PFK, not just a similar-looking filter.
  • Check the pack size and pieces included. Genuine and third-party filters can differ.
  • Compare the total price with shipping, plus the seller's feedback and delivery estimate.

Care guidance

Replacement schedule

  • Classic 500/600 Series Particle Filter 501PFK: Blueair recommends replacing the filter set every 6 months under continuous operation.

Usage and air quality can affect service life. Follow the cited manufacturer guidance for each part.

Frequently asked questions

What filter does the Blueair Classic 680i use?

The Blueair Classic 680i uses Classic 500/600 Series Particle Filter (501PFK) as its primary replacement filter parts. It also has these optional, specialty, or alternative compatible parts: Classic 500/600 Series DualProtection Filter (103770). Those parts are not simultaneously required primary filters.

How often should I replace the Blueair Classic 680i filter?

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

Where can I check replacement filters for the Blueair Classic 680i?

This page links directly to the cited official Blueair product page and shows sponsored individual eBay listings when a fresh exact-part snapshot is available, with an exact-part eBay search fallback. This site does not sell filters; match the part number and review the current source or seller listing before buying.

Official compatibility record

Manufacturer evidence

Each compatibility and care statement below is reproduced from the cited official manufacturer record. Check the source again before ordering.

Classic 500/600 Series Particle Filter 501PFK

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.

Source checked
Replacement guidance
Blueair recommends replacing the filter set every 6 months under continuous operation.
Guidance checked

Classic 500/600 Series DualProtection Filter 103770

Official Blueair documentation identifies Classic 500/600 Series DualProtection Filter set, SKU 103770 (501DPF), 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.

Source checked
Replacement guidance
Blueair recommends replacing the filter set every 6 months under continuous operation.
Guidance checked

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