Works with HEPASilent™ Technology to remove up to 99.97% of tiny airborne particles while carbon filtration.
A filter replacement indicator lets you know when it’s time for a fresh filter, typically after about six months of use.
Blue Pure 311 Particle + Carbon Filter
Particle + Carbon
Fast & free shipping
30-day returns
Extended warrantyWhy you’ll love it
Reliable everyday filtration that makes keeping your air purifier performing its best simple.
- Captures dust, pollen & pet dander
- Helps filter PM2.5 and other airborne particles
- Helps reduce light cooking and smoke odors
- Replace about every 6 months
- Filter indicator reminds you when it’s time to change
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
Works with HEPASilent™ Technology to remove up to 99.97% of tiny airborne particles while carbon filtration.
A filter replacement indicator lets you know when it’s time for a fresh filter, typically after about six months of use.
Smart Filtration, you can trust
When used as part of our HEPASilent™ filtration process, the Particle + Carbon filter provides protection against odors, chemicals, gases and 99.97%* of airborne pollen, dust and germs*.
We recommend replacing your air purifier filter about every 6 months (when used 24 hours a day). That's because, just like a vacuum cleaner, over time air purifier filters can get clogged with pollutants, and even let unpleasant odors back into the room. It's simple to replace in just a few quick steps, and easy to save with our filter subscription program.
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 Blueair air purifier is compatible with this filter?
This filter is compatible with the Blue Pure 311 air purifier.
How do I reset my filter replacement indicator (red light) on my Blue Pure air purifier?
A red filter replacement indicator appears on the air purifier when it is time to change filter, after about 6 months of operation.
After you replace your filter, press the center button down to reset the filter light indicator until the red light disappears. It usually takes 7-10 seconds and may take up to 30 seconds depending on the model.
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