As an Amazon Associate I earn from qualifying purchases.
Perfect compatible: these filter have the same specification with original filter, replacement filters compatible with Blueair Blue Pure 121 Air Purifier to maintain superior performance over time and ensures your warranty remains intact.
Technology innovation: new activated carbon distribution technology, compared to carbon particles and carbon network distribution is more uniform, Absorbs household odors, fumes, chemicals and volatile organic compounds VOCs more quickly and effectively. 97% as small as 0 Our unique hepa filtration technology allows our filters to be less dense, resulting in quieter and more energy efficient air purifiers.

Removes even tiniest airborne particles down to 01 micron: particle filter removes airborne particles such as pollen, mold, viruses, bacteria, pet dander, and dust from your indoor environment.
Recyclable: Please check your local recycling facilities for availability. Filters built to last: using a 360-degree air intake and up to 4x the filter surface area, the Blue Pure 121 Extra Protection Particle and Activated Carbon Filter lasts on average 6 months to a year; optimizing air flow and performance over time.

Automated filter replacement: subscribe & save up to 10% on auto-delivered filters when replacement is needed; We recommend replacing your filter about every 6 months when used 24 hours a day.
Traps household odors: a layer of carbon mesh traps light household odors, smoke, chemicals, and volatile organic compounds VOC. Removes even tiniest airborne particles down to 01 micron: particle filter removes airborne particles such as pollen, viruses, mold, bacteria, pet dander, and dust from your indoor environment.

Package contains 1 * 121 replacement filter, item dimensions: 11. 5x11. 5x19. 5 inches. Activated carbon 121 filter helps reduce strong smoke, odors, gases and VOCs for a very long time.

Easy to use: washable pre-filter for blueair blue pure 121 Air Purifier, removable, washable and reusable, we recommend you clean it once every 2-3 weeks to maintain the peak performance of your air purifier.
Home decoration: the package contains 4 121 pre-filters replacement, 2 diva Blue, 2 lunar rock, you can replace different colors pre-filters based on the position and scene placed in the air purifier to facilitate decoration of your room.

Clean & replace filter frequently—in order to maintain the best performance, please clean the Pre-Filter every 7-15 days and replace the HEPA Filter every 6 months, or depending on the usage.


Premium quality hepa filter material: The air filter replacement adopts dual-effect filter structure, the external HEPA filter layer and the internal activated coconut carbon filter layer.

Customer services: we will respond within 24 hours if you have any questions about the 121 Filter Replacement. Easy to install: the 121 filter replacement is easy to be replaced and disposed of without any tool required.

1. Mbetter
#ad
121 Replacement Filter Compatible with Blueair Blue Pure 121 Air Purifier, HEPA and Activated Carbon Filter…
#adMbetter #ad - Warranty: we are committed to customer satisfaction, if you encounter any problems during use, please feel free to contact us, we will definitely give you a satisfactory answer within 24 hours.1 μm of airborne particles, like pollen, chemicals, dust and pet dander.Perfect compatible: these filter have the same specification with original filter, replacement filters compatible with Blueair Blue Pure 121 Air Purifier to maintain superior performance over time and ensures your warranty remains intact.
More information #ad
Easy to use: filter structure traps even the smallest particles and resists clogging to maintain maximum airflow. Superior performance: 121 replacement filter removes annoying household odors, and gases, as well as 99. Technology innovation: new activated carbon distribution technology, compared to carbon particles and carbon network distribution is more uniform, Absorbs household odors, fumes, chemicals and volatile organic compounds VOCs more quickly and effectively. 97% as small as 0 Our unique hepa filtration technology allows our filters to be less dense, resulting in quieter and more energy efficient air purifiers.
Brand | Mbetter #ad |
Manufacturer | Mbetter #ad |
Height | 3 Inches |
Length | 21 Inches |
Width | 20 Inches |
Part Number | 1 |
More information #ad
2. Blueair
#ad
Extra Protection Particle and Activated Carbon, Fits Blue Pure 121 Air Purifier, BLUEAIR Blue Pure 121 Genuine Replacement Filter
#adBlueair #ad - Automated filter replacement: subscribe & save up to 10% on auto-delivered filters when replacement is needed; We recommend replacing your filter about every 6 months when used 24 hours a day. Compatible with blue pure 121: blueair extra Protection Combination Particle + Carbon Replacement Filter compatible with Blue Pure 121 air purifiers;.Removes even tiniest airborne particles down to 01 micron: particle filter removes airborne particles such as pollen, mold, viruses, bacteria, pet dander, and dust from your indoor environment.
More information #ad
Traps stronger odors up to 2x faster: A layer of activated carbon pellets remove stronger odors, smoke, gases, and volatile organic compounds up to 2x faster. Recyclable: Please check your local recycling facilities for availability. Filters built to last: using a 360-degree air intake and up to 4x the filter surface area, the Blue Pure 121 Extra Protection Particle and Activated Carbon Filter lasts on average 6 months to a year; optimizing air flow and performance over time.
Brand | Blueair #ad |
Manufacturer | Blueair #ad |
Height | 18.2 Inches |
Length | 2.5 Inches |
Width | 13 Inches |
Part Number | F121PACF101653 |
Model | F121PACF101653 |
Warranty | N/a. |
More information #ad
3. Blueair
#ad
Fits Blue Pure 121 Air Purifier, Particle and Activated Carbon, BLUEAIR Blue Pure 121 Genuine Replacement Filter
#adBlueair #ad - Compatible with blue pure 121+: blueair Combination Particle + Carbon Replacement Filter compatible with Blue Pure 121 air purifiers. Recyclable: Please check your local recycling facilities for availability.Automated filter replacement: subscribe & save up to 10% on auto-delivered filters when replacement is needed; We recommend replacing your filter about every 6 months when used 24 hours a day.
More information #ad
Filters built to last: using a 360-degree air intake and up to 4x the filter surface area, the Genuine Blue Pure 121 Particle and Activated Carbon Filter lasts on average 6 months to a year; optimizing air flow and performance over time. Traps household odors: a layer of carbon mesh traps light household odors, smoke, chemicals, and volatile organic compounds VOC. Removes even tiniest airborne particles down to 01 micron: particle filter removes airborne particles such as pollen, viruses, mold, bacteria, pet dander, and dust from your indoor environment.
Brand | Blueair #ad |
Manufacturer | Blueair #ad |
Height | 18.2 Inches |
Length | 2.5 Inches |
Width | 13 Inches |
Part Number | F121PACF104507 |
Model | F121PACF104507 |
Warranty | N/a. |
More information #ad
4. LHARI
#ad
Particle and Activated Carbon Filter Captures Bacteria, Dust, Compatible with Blueair Blue Pure 121 Air Purifier, Lhari 121 Relacement Filter, Smoke, Odors
#adLHARI #ad - True hepa 121 filter helps capture airborne particles down to 01 microns in size like pollen, PM 2. 5, mold spores, dust, pet dander, allergens and bacteria.Package contains 1 * 121 replacement filter, item dimensions: 11. 5x11. 5x19. 5 inches. Activated carbon 121 filter helps reduce strong smoke, odors, gases and VOCs for a very long time.
More information #ad
For best performance, change filter every 6 months or depend on usage. 121 replacement filter is ideal for people who has allergies to dust, pollen, pet hair and dander. Blue pure 121 replacement filter compatible with Blueair Blue Pure 121 air purifier.Brand | LHARI #ad |
Manufacturer | Lhari #ad |
Height | 19.5 Inches |
Length | 11.5 Inches |
Width | 11.5 Inches |
Part Number | 121 Filter |
Model | 121 Filter Replacement |
More information #ad
5. Mbetter
#ad
Dust, Pet Dander Lunar Rock, Removes Pollen, 4 Pack 121 Replacement Washable Pre-Filter for Blueair Blue Pure 121 Air Purifier, Diva Blue
#adMbetter #ad - First line of defense: 121 cover is the outermost layer of the air purifier and effectively removes larger particles, hair, dust and pet dander, pollen, extending the life of the filter. Premium fabric: 121 replacement pre-filter is made of high quality nylon and spandex material, which is densely woven and will not fade or shrink, and is extremely flexible and tough.Easy to use: washable pre-filter for blueair blue pure 121 Air Purifier, removable, washable and reusable, we recommend you clean it once every 2-3 weeks to maintain the peak performance of your air purifier.
More information #ad
Warranty: if you have any questions about our products, please feel free to contact us, we will definitely give you a satisfactory answer within 24 hours. Home decoration: the package contains 4 121 pre-filters replacement, 2 diva Blue, 2 lunar rock, you can replace different colors pre-filters based on the position and scene placed in the air purifier to facilitate decoration of your room.
Brand | Mbetter #ad |
Manufacturer | Mbetter #ad |
More information #ad
6. AirClean
#ad
2-Pack Repalcement Particle & Activated Carbon HEPA Filters + 4 Washable Pre-Filters Compatible with Blueair Blue Pure 121 Air Purifier
#adAirClean #ad - The filter set compatible with Blueair Blue Pure 121 air purifier. With 4 washable and reusable pre-filters, you don’t need to wait when replacing the pre-filters.Clean & replace filter frequently—in order to maintain the best performance, please clean the Pre-Filter every 7-15 days and replace the HEPA Filter every 6 months, or depending on the usage.
More information #ad
Order now and buy risk-free. Value combo set: package contains 2 Combination Particle + Carbon HEPA Filters and 4 Washable Pre-Filters. Satisfaction guaranteed: if dissatisfied with the item, just claim a return/refund to get full money back.Brand | AirClean #ad |
Manufacturer | AirClean #ad |
Height | 6.3 Inches |
Length | 20.87 Inches |
Weight | 104 ounces |
Width | 19.88 Inches |
Part Number | ANF121PACF104507 |
Model | AN121 |
More information #ad
7. Fette Filter
#ad
121 Replacement Filter Compatible with Blueair Blue Pure 121 Air Purifier with Particle and Activated Carbon, Fette Filter, Pack of 1
#adFette Filter #ad - Fette filter premium quality products 100% HIGH QUALITY MATERIAL. True hepa filter captures up to 99. 97% of particle pollutants as small as 03 microns in size.More information #ad
Activated carbon layer, smoke, which helps reduce household unwanted odors, gases and VOCs up to 2 x faster. Contains 1 air purifier, Foldable Particle and Activated Carbon Filter. Compatible with blueair Blue Pure 121 Air Purifier.Brand | Fette Filter #ad |
More information #ad
8. LUXRILIX
#ad
BluePure 121 Replacement Filter Compatible with Blueair Blue Pure 121 Air Purifier HEPA Carbon Filter
#adLUXRILIX #ad - Superior compatibility: the 121 replacement filter compatible with blueair BLUE PURE 121 Air Purifier, the outer size approximate 19. 5" length x 11. 5" width, ️️before buying, please pay attention to check the size. Risk-free shopping:if you are not satisfied with any of our air purifier replacement cartridges, you can contact us anytime within three months, we are more than willing to refund you! Replace filter every 6 months: to keep your air purifier at peak performance, That's because, over time air purifier filters can get clogged with dirt, we recommend replacing the filter about every 6 months when used 24 hours a day, and even let unpleasant odors back into the room.More information #ad
Efficiently purifies air:the air purifier filter efficiently collects a variety of small and large dirt and odors, fibers and hair, such as common household odors, grease and smoke odors, Purify the air through a highly efficient filter layer, bring you and your family healthier and purer air. Premium quality hepa filter material: The air filter replacement adopts dual-effect filter structure, the external HEPA filter layer and the internal activated coconut carbon filter layer.
Brand | LUXRILIX #ad |
Manufacturer | yl super products #ad |
Part Number | 121 replacement filter |
Model | 121 replacement filter |
More information #ad
9. Ontheone
#ad
Particle True HEPA Filter and Activated Carbon, True HEPA 121 Replacement Filter Compatible with Blueair Blue Pure 121 Purifier
#adOntheone #ad - Activated carbon filter efficiently removes household odors from pets, cooking, smoking, and VOCs.121 filter replacement Replace every 6-8 months depending on the usage and environment.Customer services: we will respond within 24 hours if you have any questions about the 121 Filter Replacement. Easy to install: the 121 filter replacement is easy to be replaced and disposed of without any tool required.
More information #ad
Included 1 Pack 121 Filter. Simply remove the older and dirty 121 Filter and replace re-secure the cover, in just 1 minute. 2 stage filtration: premium true hepa 121 filter removes 99. 97% of airborne particles down to 03 microns in size. Compatibility: 121 filter replacement Compatible with Blueair Blue Pure 121 Purifier. Dimensions: 121 filter replacement :19. 5''x11. 5''x11. 5''.Brand | Ontheone #ad |
Manufacturer | Ontheone #ad |
Part Number | HEPA-121 |
More information #ad
10. LHARI
#ad
Lhari 121 Filter replacements + 411 Replacement Filter 2-pack, Compatible with Blueair Blue Pure 121, 411+, 411, Mini Air Purifiers
#adLHARI #ad - Blue 121 filter replacements compatible with Blueair Blue Pure 121 air purifier. Activated carbon layer helps reduce strong smoke, odors, gases and VOCs for a very long time. Ideal for people who has allergies to dust, pollen, pet hair and dander.More information #ad
Blue 411 filter replacement compatible with blueair blue pure 411, 411+, and MINI air purifiers. Particle filter captures up to 99. 97% of airborne particles like pollen, pet dander, mold, bacteria, dust that passing through the filter.Brand | LHARI #ad |
More information #ad