![Blue Pure 511i Max Blue Pure 511i Max](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Sites-blueair-master-catalog/default/dweb217e4a/filters/blue/Max/Replacement%20Max/Particle_Carbon/511i_particle.png?sw=900&sh=900&sm=fit)
Blue Pure 511i Max
Compatible with Blue Pure 511i MaxPromotions
Add to cart options
![Blueair Diagram showing which air purifier model should be used for the filter Blueair Diagram showing which air purifier model should be used for the filter](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw667908f1/2024%20-%20Filter%20PDPs/Inside_411iMax.png?sw=468)
replacement filter
Designed specifically for the Blue Pure 511i Max.
Find the name of your air purifier on the label inside your air purifier.
![Blueair Blueair SmokeBlock uses 2x more activated carbon Blueair Blueair SmokeBlock uses 2x more activated carbon](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dwfad2c62b/Blue%20Pure%20Max/511i%20Max%20PDP/Blueair_Pollutant_Details.png?sw=468)
of airborne particles
The Particle + Carbon filter provides protection against odors, chemicals, gases and 99.97% of airborne pollen, dust and germs.
![Blueair Fabric pre-filter Blueair Fabric pre-filter](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dwa4f3efa8/2024%20-%20Filter%20PDPs/Pre-filter.png)
The first layer of protection, catches larger particles from the air.
![Blueair Main filter Blueair Main filter](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dwa572d865/2024%20-%20Filter%20PDPs/SmokeBlock-Filter.png)
Removes airborne allergens, like pollen, dust mite matter allergen, pet dander, germs, mold, bacteria & viruses.
![Blueair Activated carbon Blueair Activated carbon](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw7ea5499f/2024%20-%20Filter%20PDPs/Carbon.png)
Traps strong household odors from smoke and wildfire particles.
![Blueair Blueair RealTrack Technology Blueair Blueair RealTrack Technology](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw628a496e/2024%20-%20Filter%20PDPs/F4MAX_filter%20status.png?sw=468)
lifetime status
Blueair's proprietary RealTrack algorithm accurately calculates the remaining filter lifetime based on fan speed, usage time, and pollution levels.
![Blueair Blueair genuine filter Blueair Blueair genuine filter](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw7031beef/2024%20-%20Filter%20PDPs/Genuine%20filter.png?sw=468)
replacement filter
Protect your air purifier from damage
caused by unofficial filters.
![Blueair Image Blueair Image](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw00ec6c28/2023%20Icons/Icon_Bacteria.png)
With the unique filter design at least 99.97%³ of airborne particles, even down to 0.1 microns, are removed, while using less energy and producing less noise.
![Blueair Works 24/7, for six months straight Blueair Works 24/7, for six months straight](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw3ef1dc59/New/Icons/icon_onebutton.png)
To maintain optimal performance, we recommend changing your filter about once every 6-months when used 24 hours a day. Don't forget to save with our subscription program.
![Blueair Keeps clean air flowing, resists clogging Blueair Keeps clean air flowing, resists clogging](https://www.blueair.com/on/demandware.static/-/Library-Sites-blueair-ca-content-library/default/dw478ffea1/2023%20Icons/Icon_Dust.png)
This filter's unique structure is designed to filter high volumes of air while trapping even the smallest particles. It maintains maximum airflow because it's engineered to resist clogging.
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Recommended filter change6 months (4,380 hours) when used 24 hours a day
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Number of filters1
![Blue Pure 511i Max Blue Pure 511i Max](https://www.blueair.com/dw/image/v2/AASF_PRD/on/demandware.static/-/Sites-blueair-master-catalog/default/dweb217e4a/filters/blue/Max/Replacement%20Max/Particle_Carbon/511i_particle.png?sw=450&sh=450&sm=fit)
This filter is compatible only with the Blue Pure 511i Max air purifier.
Press and hold down the LED button for 15 seconds to reset the replacement filter indicator.
Disclaimers
¹ Tested on PM 2.5 up to 90 min, pollen allergen (Cry j1), cat allergen (Def f1), fungal allergen (Alt a1), dust mite allergen (Fel d1). Performance may vary across models.Tested to remove min. 99.9% of S. aureus, K. pneumoniae, P. aeruginosa, MS2, E.Coli, H1N1, A.Niger.
² Tested on TVOC, sulfure dioxide, nitrogen dioxide. Deodorization tested on ammonia, acetaldehyde, acetic acid.