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Filters › Blueair Blue Pure 511i Max
Blueair Blue Pure 511i Max replacement filter
The Blueair Blue Pure 511i Max takes the Blue Pure 511i Max SmokeBlock Filter. It costs $38.99 at Blueair's store and lasts up to 9 months, which works out to about $52 a year in filters.
The numbers
| Filter | Blue Pure 511i Max SmokeBlock Filter |
|---|---|
| Price at Blueair's store | $38.99 |
| Lasts | up to 9 months |
| Filters per year | $52 |
| Electricity per year (est.) | $10 |
| Total running cost per year (est.) | $62 |
| Five years of filters | $260, against $140 for the purifier |
Filter price and replacement schedule are Blueair's own, checked 2026-10-10. 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 5 of 23 purifiers we track (1 is cheapest). Against other purifiers for small rooms:
| Purifier | Filter | Per year |
|---|---|---|
| Blueair Blue Signature (Small) | $39.99 | $40 |
| Coway Airmega 150 | $49.99 | $50 |
| Levoit Core 200S-P | $25.99 | $52 |
| Blueair Blue Pure 511i Max | $38.99 | $52 |
| Levoit Core 300S-P | $29.99 | $60 |
| Levoit Vital 100S-P | $39.99 | $80 |
| Levoit Vital Pet Pro | $49.99 | $100 |
Other filters Blueair sells for the Blue Pure 511i Max
Besides the standard filter, Blueair lists these 2 for the Blue Pure 511i Max. The type is Blueair's own description of what the filter is for; we have not tested any of them, and the purifier's published CADR is for its standard filter.
| Type | Filter | Price | vs. standard | Why it's listed for this purifier | |
|---|---|---|---|---|---|
| Smoke | Blueair Blue Pure 511i Max Smokeblock Filter | $38.99 checked 2026-10-11 | +$0 | Blueair's listing names it: “Blue Pure 511i Max Smokeblock Filter” (source, confirmed 2026-10-11) | |
| Allergen | Blueair Blue Pure 511i Max Allergenblock Filter | $44.99 checked 2026-10-11 | +$6 | Blueair's listing names it: “Blue Pure 511i Max Allergenblock Filter” (source, confirmed 2026-10-11) |
Prices are from Blueair's store. The yearly cost above uses the standard filter; a dearer filter replaced on the same schedule raises it in proportion. A pre-filter is the outer layer that catches hair and large dust before the main filter.
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 Blue Pure 511i Max, the cheapest purifiers to run, or every purifier's filter cost.