Choose everyday Particle & Carbon, extra AllergenBlock protection, enhanced SmokeBlock odor removal or long-lasting EcoLast™ filtration
Simple filter changes and RealTrack™ monitoring take the guesswork out of keeping your purifier performing its best.
Blue Pure 311i+ Max Filter
Particle + Carbon
Fast & free shipping
30-day returns
Extended warrantyWhy you’ll love it
More ways to personalize your clean air based on what matters most in your home.
- Choose the right filter for your changing air needs
- Tackle everyday dust, pollen, pet dander and odors
- Add extra allergen support during high-allergen seasons
- Get more carbon protection when smoke and odors are a concern
- Get notified when it’s time for a replacement
- Swap filters quickly with minimal upkeep
6 month filter lifetime 
Particle + odor filtration 
App replacement alerts 
Quick & easy filter
changes
Features & Technologies
- Particle + Carbon filtration tackles everyday particles and light household odors.
- Main filter captures PM2.5, pollen, dust mite matter and pet dander allergens.
- Activated carbon traps light odors from smoke, cooking and more.
- 6-month replacement cycle keeps routine maintenance straightforward.
- Filter replacement indicator lets you know when it’s time for a fresh filter.
- Easy replacement design makes routine filter changes simple.
Product Notes
¹ Tested on PM 2.5 up to 90 mins
² Based on ELISA deactivation testing of Pollen (Cry J1), Pet Dander (Fel d1, Can F1), Dust Mite Matter (Der f1) on the filter media in 60 minutes.
³ Compared to standard in-unit filter. Based on removal testing of particles 0.4-0.7 μm in 60min in a 30m3 room. Performance may vary. Odors: Tested on benzene, toluene, nitrogen oxide, sulfur dioxide in 30 min.
⁵ AllergenBlock refers to inanimate allergens pollen, dust and pet dander
Choose everyday Particle & Carbon, extra AllergenBlock protection, enhanced SmokeBlock odor removal or long-lasting EcoLast™ filtration
Simple filter changes and RealTrack™ monitoring take the guesswork out of keeping your purifier performing its best.
Smart filtration, you can trust
Find the Blueair model name on the label inside your air purifier.
Blueair’s proprietary RealTrack algorithm accurately calculates the remaining filter lifetime based on fan speed, usage time and pollution levels.
Dirty filters clean the air less efficiently. Sign up for a filter subscription and get fresh filters delivered right when you need them.
Main Filter Captures airborne particles including, PM 2.5, pollen, dust mite matter allergen & pet dander allergen
Activated Carbon
Traps light household odors from smoke, cooking odors and more
FAQ
What air purifier is this filter compatible with?
This filter is compatible only with the Blue Pure Max 311i+ air purifier.
How often should I replace my Blueair air purifier filter?
Depending on usage, your filter will last up to 9 months.
It’s important to change your filter when needed because dirty filters clean the air less efficiently, reducing the purifier's ability to capture pollutants and affecting overall air quality in your space.
How do I know when it’s time to change my filter?
A filter change indicator light that will alert you when it's time to replace the filter. You can also check the status via the Blueair app for models with smart capabilities.
How do I reset the red light (filter light indicator) on my Blue Pure Max air purifier?
After replacing your filter, you can reset the filter light indicator by pressing the fan speed button for about 15 seconds (until all the LEDs of the interface light up). The filter light indicator will turn off. Then release.
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