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Filters › Blueair DustMagnet 5440i
Blueair DustMagnet 5440i replacement filter
The Blueair DustMagnet 5440i takes the DustMagnet 5400 Series Filter. It costs $54.99 at Blueair's store and lasts up to 6 months, which works out to about $110 a year in filters.
The numbers
| Filter | DustMagnet 5400 Series Filter |
|---|---|
| Price at Blueair's store | $54.99 |
| Lasts | up to 6 months |
| Filters per year | $110 |
| Electricity per year (est.) | $25 |
| Total running cost per year (est.) | $135 |
| Five years of filters | $550, against $320 for the purifier |
Filter price and replacement schedule are Blueair's own, checked 2026-10-11. Yearly figures are our calculation from them; electricity assumes 24/7 use at a typical fan speed and $0.17/kWh.
How it compares
Its yearly filter cost ranks 20 of 23 purifiers we track (1 is cheapest). Against other purifiers for medium rooms:
| Purifier | Filter | Per year |
|---|---|---|
| Blueair Blue Pure 411i+ Max | $29.99 | $30 |
| Coway Airmega Mighty AP-1512HH | $59.79 | $60 |
| Coway Airmega 200M | $59.79 | $60 |
| Coway Airmega Mighty2 AP-1512N | $69.99 | $70 |
| Coway Airmega 250 | $89 | $89 |
| Coway Airmega 300 | $99 | $99 |
| Levoit Vital 200S-P | $49.99 | $100 |
| Levoit Core 400S-P | $49.99 | $100 |
| Blueair DustMagnet 5440i | $54.99 | $110 |
When to replace it
- Follow the purifier's filter indicator rather than the calendar: it tracks actual use, and the brand's schedule is a maximum under normal conditions.
- Wildfire smoke, heavy cooking, pets and dusty rooms shorten a filter's life. A filter that looks grey or carries a smell is due even if the light hasn't come on.
- Third-party filters are cheaper, but the brand's performance figures only apply with its own filter, and on some purifiers the filter-life tracking only works with genuine ones.
See the full specs for the Blueair DustMagnet 5440i, the cheapest purifiers to run, or every purifier's filter cost.