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Blue Pure 311i+ Max
$52.49
52.49
$69.99
Blue Pure 311i+ Max replacement filter
Designed specifically for the Blue Pure 311i+ Max.
Find the name of your air purifier on the label inside your air purifier.
Extra protection
against allergens
against allergens
Blueair’s AllergenBlock¹ technology reduces your exposure to pollen, pet dander, and dust allergens, by neutralizing over 90%² of their sneeze-inducing properties once caught on the filter.
Main filter
Captures airborne particles, including pollen, dust, and pet dander allergens.
AllergenBlock defense
Neutralizes² over 90% of the allergen properties that can trigger discomfort.
Activated carbon
Traps strong household odors from smoke and wildfire particles.
Real-time filter
lifetime status
lifetime status
Blueair's proprietary RealTrack algorithm accurately calculates the remaining filter lifetime based on fan speed, usage time, and pollution levels.
Genuine Blueair
replacement filter
replacement filter
Protect your air purifier from damage
caused by unofficial filters.
Details
Less noise and energy
Our unique HEPASilent™ filtration technology allows this filter to be less dense, meaning it requires less air pressure. With it installed, your air purifier will operate more quietly while using less energy.
Keeps clean air flowing, resists clogging
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.
Minimizes unhealthy allergens and germs*
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.
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Dimensions(HxWxD)11.4 x 7.9 x 2.5 in in
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Product weight0.5 lbs
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Recommended filter change6 months (4,380 hours) when used 24 hours a day
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Number of filters1
What air purifier is this filter compatible with?
This filter is compatible only with the Blue Pure 311i+ Max air purifier.
I've replaced my filters, now how do I reset the filter replacement indicator?
Press and hold down the LED button for 15 seconds to reset the replacement filter indicator.
Subscribe to save 15%
Easy and flexible
Peace of mind, delivered for free¹
Seeing a new filter at your door is
a celebration of your choice to
breathe clean air.
Exclusive perks
Filter subscription members
get 15% off on every filter and
exclusive product perks.
Disclaimers
¹ AllergenBlock refers to inanimate allergens pollen, dust and pet dander.
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 A flat shipping rate of $25.00 will be charged on filter shipments to Alaska, Hawaii, and Puerto Rico. Additional charges may apply for shipments over 30 lbs. A flat shipping rate of $5 will be charged on orders under $39 that are not part of filter subscription.