Why it matters
The Blueair Blue Pure 411i Max, 411a Max Particle + Carbon Filter is a maker-original filter for the Blueair Blue Pure 511i Max.
Made for Blueair's Blue Pure 411i Max, 411a Max purifiers. The model label is usually on the back or under the filter door; match it before ordering.
Replacement interval, per the maker: every 9 months. Smoke, pets and heavy use shorten that; a filter that looks gray on the intake side is due.
Blueair's Particle + Carbon version adds a carbon layer for light household odors.
It fits the Blueair Blue Pure 511i Max, which its maker lists as rated for 237 sq ft. A unit that runs on high in a large room loads its filter faster than the same unit on low in a bedroom.
This is the odor stage: activated carbon adsorbs smells and some gases (VOCs) until its surface fills up, and then it simply stops working, with no visible sign. Kitchens, smokers and pets fill it fastest, so replace it on the maker's interval even if it looks clean.
Use the filter made for your exact unit: purifier filters seal against their own housing, and a close-but-different filter lets air bypass the media.
Compared with the Blueair Blue Pure 511 Particle + Carbon Filter: replacement interval every 9 months here vs every 6 months.
Who it's for, and who should skip it
Good fit if
- Blueair Blue Pure 511i Max owners
- Keeping rated performance
Look elsewhere if
- Other purifier models
Pros and cons
Pros
- Life: every 9 months
- Maker-original part
Cons
- Only fits its own unit family
- A recurring cost of owning the purifier
Limitations to weigh
- Specifications are the maker's or seller's own figures; check fit against your equipment's model number and the actual size.
Specifications
The bracket shows where each figure comes from.
| Price | $29.99 | Maker |
|---|---|---|
| Replacement interval | every 9 months | Maker |
Alternatives worth comparing
More air purifier replacement filters we cover
- Blueair DustMagnet ComboFilter 5200 $44.99
- Alen TF60 Replacement Filter
- Blueair Blue Pure 211i Max AllergenBlock Filter $89.99
- Dyson Pure Cool Me Replacement Filter
- Wilerda KILO-2 Replacement Filter for Afloia
All air purifier replacement filters, compared in one table · Every Blueair product we cover
Final verdict
A practical choice for blueair Blue Pure 511i Max owners. Confirm the model it fits before ordering.
Where to buy
Each button opens this exact model. Disclosure