Fits checked Oct 1, 2026 · How we check
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Blueair · air purifier

Blueair DustMagnet 5440i replacement filter

Use part F5400. Lasts up to 9 months depending on usage.

The filter that fits

Maker lists this model

Blueair ComboFilter 5400

DustMagnet ComboFilter 5400

Part number
F5400also sold as 106322
How many
1 per unit
How often
Lasts up to 9 months depending on usage

Blueair does not state how many ComboFilters the unit holds; its 5440i listing ships "1 Air Purifier 2 5400 ComboFilters", so the unit may take two. The count of one shown here is not stated by the maker.

Buy ComboFilter 5400 on AmazonManufacturer page

Opens an Amazon search for Blueair ComboFilter 5400 F5400. Check the listing says F5400.

See the sources

Does your exact model share this filter?

Blueair labels several versions of the DustMagnet 5440i. Check the label on your unit.

  • DustMagnet 5440i takes F5400
  • 5410i same filter
  • DustMagnet 5240i different filter · Takes ComboFilter 5200 (F5200).
  • DustMagnet 5210i different filter · Takes ComboFilter 5200 (F5200).

Look-alike models that take a different filter

The DustMagnet 5210i and 5240i take the ComboFilter 5200 (F5200), not the 5400.

Sources

High confidence: the manufacturer names this exact model on a live page. Each line is the page we read and the day we read it.

  • Which filter fits blueair.com Maker's own page checked Oct 1, 2026
    DustMagnet ComboFilter 5400 Compatible with 5410i • 5440i ... This filter is compatible with the following Protect family models: 5410i, 5440i.
  • How many blueair.com Maker's own page checked Oct 1, 2026
    DustMagnet 5440i Air Purifier + Filter Subscription ... One Time Shipment 1 Air Purifier 2 5400 ComboFilters
  • How often blueair.com Maker's own page checked Oct 1, 2026
    Depending on usage, your filter will last up to 9 months.
Show all 4 sources

Which filter fits

  1. blueair.com Maker's own page checked Oct 1, 2026
    DustMagnet ComboFilter 5400 Compatible with 5410i • 5440i ... This filter is compatible with the following Protect family models: 5410i, 5440i.
  2. blueair.com Maker's own page checked Oct 1, 2026
    DustMagnet ComboFilter 5400, sku 106322; subscription "106322 - F5400"

How many

  1. blueair.com Maker's own page checked Oct 1, 2026
    DustMagnet 5440i Air Purifier + Filter Subscription ... One Time Shipment 1 Air Purifier 2 5400 ComboFilters

How often

  1. blueair.com Maker's own page checked Oct 1, 2026
    Depending on usage, your filter will last up to 9 months.