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Best Buy customers often prefer the following products when searching for small air filters.

Replacing the filter in your small air purifier once in a while will help make it last longer, keep it energy efficient, and ensure the air you're breathing is properly filtered and pure. If you're looking for small air filters, we've got you covered. Browse the top-ranked list of small air filters below along with associated reviews and opinions.

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  1. Pure Enrichment - 2-in-1 True HEPA Replacement Filter for the PureZone Mini Portable Air Purifier (PEPERSAP) - Grey - Front_Zoom
    Top comment

    "Great air purifier...We have loved our mini air purifier and the filters came quickly and without issue. ...MINI AIR PURIFIER REPLACEMENT FILTER...SMALL CUTE AND DOES THE JOB FILTER WORKS GREAT ! "

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    Product Description

    Breathe in fresher air using the 2-in-1 True HEPA replacement filter from Pure Enrichment. Enjoy improved air quality as the premium 2-stage filter safely cleans your personal air in any office, hotel, or travel setting. Our filter is designed to work with the Pure Enrichment PureZone Mini Portable Air Purifier (sold separately). Each of the two layers of this filter provides a unique level of cleaning: Activated Carbon Pre-Filter– Captures and absorbs initial dust, allergen particles, formaldehyde, benzene, and other noxious gases. HEPA Filter– Captures dust, smoke, pollen, and other allergens. For optimal performance, we recommend replacing your unit's air filter every 6 months.
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    Top comment

    "Great air purifier...We have loved our mini air purifier and the filters came quickly and without issue. ...MINI AIR PURIFIER REPLACEMENT FILTER...SMALL CUTE AND DOES THE JOB FILTER WORKS GREAT ! "

    See all customer reviews

    Product Description

    Breathe in fresher air using the 2-in-1 True HEPA replacement filter from Pure Enrichment. Enjoy improved air quality as the premium 2-stage filter safely cleans your personal air in any office, hotel, or travel setting. Our filter is designed to work with the Pure Enrichment PureZone Mini Portable Air Purifier (sold separately). Each of the two layers of this filter provides a unique level of cleaning: Activated Carbon Pre-Filter– Captures and absorbs initial dust, allergen particles, formaldehyde, benzene, and other noxious gases. HEPA Filter– Captures dust, smoke, pollen, and other allergens. For optimal performance, we recommend replacing your unit's air filter every 6 months.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  2. Shark - Air Purifier Anti-Allergen Filter with True HEPA, Compatible with HP102, HC452 - Rotator White & Blue - Front_Zoom
    Top comment

    "clean air...we bought the air purifier and it works wonders these filters are stronger then most air filters and holds more...Shark Air Filter...Great product. Air filter works very well and keeps the air in. our home clean."

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    Product Description

    The Shark Air Purifier NANOSEAL Filter with true HEPA captures 99.98% of large, small, & micro-sized particles from the air and is equipped with carbon for protection against household odors and VOCs. Based on IEST-RP-CC007.3, 0.1–0.2 microns.
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    Top comment

    "clean air...we bought the air purifier and it works wonders these filters are stronger then most air filters and holds more...Shark Air Filter...Great product. Air filter works very well and keeps the air in. our home clean."

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    Product Description

    The Shark Air Purifier NANOSEAL Filter with true HEPA captures 99.98% of large, small, & micro-sized particles from the air and is equipped with carbon for protection against household odors and VOCs. Based on IEST-RP-CC007.3, 0.1–0.2 microns.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  3. Levoit - 3-Stage Original Filter for Core 300 Purifier - White - Front_Zoom
    Top comment

    "Filter...Nice product its an air filter it filters the air...Clean air...This filter does the job. It is small but thorough."

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    Product Description

    Fill your environment with fresh, clean air using Levoit’s Core 300-RF 3-Stage Original Filter. An effective 3-stage filtration system captures at least 99.97% of airborne particles 0.3 microns in size, so your surrounding air is free of harmful contaminants. To do its best work, Levoit recommends replacing the filter every 6-8 months - the filter may need to be replaced sooner or later depending on the air quality in your area. Compatible with Core 300 and Core P350 series.
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    Top comment

    "Filter...Nice product its an air filter it filters the air...Clean air...This filter does the job. It is small but thorough."

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    Product Description

    Fill your environment with fresh, clean air using Levoit’s Core 300-RF 3-Stage Original Filter. An effective 3-stage filtration system captures at least 99.97% of airborne particles 0.3 microns in size, so your surrounding air is free of harmful contaminants. To do its best work, Levoit recommends replacing the filter every 6-8 months - the filter may need to be replaced sooner or later depending on the air quality in your area. Compatible with Core 300 and Core P350 series.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  4. Honeywell - HEPA Air Purifier Filter Value Kit - A and R Filters - Black White - Front_Zoom
    Top comment

    "Great Filters...Great filters for use in Honeywell air filter system....Great Air Flow...Works Perfectly! Great airflow, small and compact and cools the entire room."

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    Product Description

    The Honeywell HEPA Filter and Pre-Filter Kit includes a year supply of Honeywell Certified HEPA Filters and Genuine Pre-Filters designed exclusively to fit Honeywell HEPA Air Purifier models HPA 090, HPA100, HPA3100, HPA5100 (2 yr supply) and HPA200, HPA204, HPA250, HPA3200, HPA5200 & HPA5220 (1 yr supply)
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    Top comment

    "Great Filters...Great filters for use in Honeywell air filter system....Great Air Flow...Works Perfectly! Great airflow, small and compact and cools the entire room."

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    Product Description

    The Honeywell HEPA Filter and Pre-Filter Kit includes a year supply of Honeywell Certified HEPA Filters and Genuine Pre-Filters designed exclusively to fit Honeywell HEPA Air Purifier models HPA 090, HPA100, HPA3100, HPA5100 (2 yr supply) and HPA200, HPA204, HPA250, HPA3200, HPA5200 & HPA5220 (1 yr supply)
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  5. Pure Enrichment - 3-in-1 True HEPA Replacement Filter for the PureZone Air Purifier (PEAIRPLG) - Grey - Front_Zoom
    Top comment

    "Like a brand new machine with the new filter...The new filters fit well and cleaned the air like when we first got it....Easy to replace filter...This is a little powerhouse. Changing filters is easy. Keeps a small bedroom fresh"

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    Product Description

    Breathe in fresher air using the 3-in-1 True HEPA replacement filter from Pure Enrichment. Enjoy improved air quality as the premium 3-stage filter safely cleans the air in any home or office. Our filter is designed to work with the Pure Enrichment PureZone Air Purifier (sold separately). Each of the three layers of this filter provides a unique level of cleaning: Pre-Filter– Captures initial dust and allergen particles. Activated Carbon Filter– Absorbs formaldehyde, benzene, and other noxious gases. HEPA Filter– Captures dust, smoke, pollen, and other allergens. For optimal performance, we recommend replacing your unit's air filter every 6 months.
    See all Air Purifier Filters & Parts
    Top comment

    "Like a brand new machine with the new filter...The new filters fit well and cleaned the air like when we first got it....Easy to replace filter...This is a little powerhouse. Changing filters is easy. Keeps a small bedroom fresh"

    See all customer reviews

    Product Description

    Breathe in fresher air using the 3-in-1 True HEPA replacement filter from Pure Enrichment. Enjoy improved air quality as the premium 3-stage filter safely cleans the air in any home or office. Our filter is designed to work with the Pure Enrichment PureZone Air Purifier (sold separately). Each of the three layers of this filter provides a unique level of cleaning: Pre-Filter– Captures initial dust and allergen particles. Activated Carbon Filter– Absorbs formaldehyde, benzene, and other noxious gases. HEPA Filter– Captures dust, smoke, pollen, and other allergens. For optimal performance, we recommend replacing your unit's air filter every 6 months.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  6. Genuine HEPA Pet Pure Replacement Filter C for GermGuardian AC5000 Series Air Purifiers - White - Front_Zoom
    Top comment

    "Not as good as the factory filters...The filters that came with the air purifier did a much better job of cleaning the air in my home. ...Filter...This filter seems very nice. Serves it's purpose to clean the air."

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    Product Description

    Still collecting hair in every nook and cranny, despite your best efforts to keep it clean? Our Pet Pure(R) Genuine HEPA Filter is specifically designed to capture more hair and odors from your furry friends, because we know it’s not Roscoe’s fault for being fluffy. Choose our Pet Pure(R) HEPA Filter Replacement to take the first step towards a cleaner, fresher, and healthier home. Experience the difference in air quality and bid farewell to pet-related allergens and odors with our advanced HEPA Filter Replacement, meticulously crafted to tackle pet dander, hair, and odors with exceptional efficiency. The Pet Pure(R) HEPA Filter Replacement is infused with Pet Pure Filter Treatment, a powerful anti-microbial agent. This treatment actively inhibits the growth of mold, mildew, and odor-causing bacteria on the surface of the filter, ensuring that it remains clean and fresh for extended periods. The HEPA (High-Efficiency Particulate Air) filter efficiently captures even the tiniest airborne particles, such as dust, pollen, pet dander, and mold spores. Its high-performance design guarantees the trapping of 99.97% of particles as small as 0.1 microns, promoting a healthier living environment. *Initial efficiency value. As small as 0.1 microns from the air passing through the filter media. Compatible with [the GermGuardian 28" Tower Air Purifier Series, our HEPA Filter Replacement is designed for easy installation and hassle-free maintenance. We recommend replacing the filter every 6 months to ensure optimal performance and efficiency, keeping your air quality at its best. Carbon filters (FLT28CB4) can be replaced every 2-3 months to extend the life of the HEPA Filter .
    See all Air Purifier Filters & Parts
    Top comment

    "Not as good as the factory filters...The filters that came with the air purifier did a much better job of cleaning the air in my home. ...Filter...This filter seems very nice. Serves it's purpose to clean the air."

    See all customer reviews

    Product Description

    Still collecting hair in every nook and cranny, despite your best efforts to keep it clean? Our Pet Pure(R) Genuine HEPA Filter is specifically designed to capture more hair and odors from your furry friends, because we know it’s not Roscoe’s fault for being fluffy. Choose our Pet Pure(R) HEPA Filter Replacement to take the first step towards a cleaner, fresher, and healthier home. Experience the difference in air quality and bid farewell to pet-related allergens and odors with our advanced HEPA Filter Replacement, meticulously crafted to tackle pet dander, hair, and odors with exceptional efficiency. The Pet Pure(R) HEPA Filter Replacement is infused with Pet Pure Filter Treatment, a powerful anti-microbial agent. This treatment actively inhibits the growth of mold, mildew, and odor-causing bacteria on the surface of the filter, ensuring that it remains clean and fresh for extended periods. The HEPA (High-Efficiency Particulate Air) filter efficiently captures even the tiniest airborne particles, such as dust, pollen, pet dander, and mold spores. Its high-performance design guarantees the trapping of 99.97% of particles as small as 0.1 microns, promoting a healthier living environment. *Initial efficiency value. As small as 0.1 microns from the air passing through the filter media. Compatible with [the GermGuardian 28" Tower Air Purifier Series, our HEPA Filter Replacement is designed for easy installation and hassle-free maintenance. We recommend replacing the filter every 6 months to ensure optimal performance and efficiency, keeping your air quality at its best. Carbon filters (FLT28CB4) can be replaced every 2-3 months to extend the life of the HEPA Filter .
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  7. Levoit - HEPA Replacement Filter for AirNow Purifier - 1pk - White - Front_Zoom
    Top comment

    "Great filters...Perfect way to filter out those dust mites that I’m allergic to....Air filter...Good air filter, last a long time good quality for the price"

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    Product Description

    This certified, genuine Levoit True HEPA Replacement Filter for the AirNow Air Purifier is used to keep your air purifier at its best working condition and capacity. The pre-filter, HEPA filter and activated carbon filter work together to remove 99.9% of dust, pollen, smoke, odor, allergies, mold spores, and pet dander. This filters particles as small as 0.3 microns and larger air pollution of PM 2.5. This filter will not release any strange smell and works to remove unwanted odor and particles. This is perfect for those who are sensitive to the surrounding air or anyone who wants to improve the air quality. Ensure to remove the plastic bag on the filter before running the air purifier. The activated carbon pre-filer should be replaced every 2-3 months. Your air purifier comes with 2 extra pre-filters. To do its best work, Levoit recommends replacing the filter every 6-8 months - the filter may need to be replaced sooner or later depending on the air quality in your area. Compatible with H126 series.
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    Top comment

    "Great filters...Perfect way to filter out those dust mites that I’m allergic to....Air filter...Good air filter, last a long time good quality for the price"

    See all customer reviews

    Product Description

    This certified, genuine Levoit True HEPA Replacement Filter for the AirNow Air Purifier is used to keep your air purifier at its best working condition and capacity. The pre-filter, HEPA filter and activated carbon filter work together to remove 99.9% of dust, pollen, smoke, odor, allergies, mold spores, and pet dander. This filters particles as small as 0.3 microns and larger air pollution of PM 2.5. This filter will not release any strange smell and works to remove unwanted odor and particles. This is perfect for those who are sensitive to the surrounding air or anyone who wants to improve the air quality. Ensure to remove the plastic bag on the filter before running the air purifier. The activated carbon pre-filer should be replaced every 2-3 months. Your air purifier comes with 2 extra pre-filters. To do its best work, Levoit recommends replacing the filter every 6-8 months - the filter may need to be replaced sooner or later depending on the air quality in your area. Compatible with H126 series.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  8. Insignia™ - Insignia Replacement Filter for NS-APLWH2 Insignia 497 Sq. Ft. Air Purifier - White - Front_Zoom
    Top comment

    "Great Air Purifier Filter...Easy to setup/install, just insert and you're ready to use your air purifier again. I use it in my small office and all of my employes agree that the air purifier/filter combo do an EXCELLENT job of improving the air quailty in the office. ...Great air filters for a great air cleaner...These are great filters that go with my air cleaners. Last a long time and do a great job"

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    Product Description

    Keep the unpleasant side effects of allergies and odors outside of your home with the Insignia Replacement Filter for NS-APLWH2 Insignia 497 Sq. Ft. Air Purifier. With a dual layer, this HEPA and activated carbon filter captures 99.97% of particles as small as .3 microns. It removes dust, pollen, irritants and smoke, improving your air quality and visibility. The layer of active carbon also removes odors, keeping your house smelling clean and fresh. Don’t worry about having to constantly change the filter. Depending on your air quality, the filter can last 2,000 hours. It’s designed to replace the filter in the Insignia NS-APLWH2 497 Sq. Ft. HEPA Air Purifier, so you can maintain your clean air today.
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    Top comment

    "Great Air Purifier Filter...Easy to setup/install, just insert and you're ready to use your air purifier again. I use it in my small office and all of my employes agree that the air purifier/filter combo do an EXCELLENT job of improving the air quailty in the office. ...Great air filters for a great air cleaner...These are great filters that go with my air cleaners. Last a long time and do a great job"

    See all customer reviews

    Product Description

    Keep the unpleasant side effects of allergies and odors outside of your home with the Insignia Replacement Filter for NS-APLWH2 Insignia 497 Sq. Ft. Air Purifier. With a dual layer, this HEPA and activated carbon filter captures 99.97% of particles as small as .3 microns. It removes dust, pollen, irritants and smoke, improving your air quality and visibility. The layer of active carbon also removes odors, keeping your house smelling clean and fresh. Don’t worry about having to constantly change the filter. Depending on your air quality, the filter can last 2,000 hours. It’s designed to replace the filter in the Insignia NS-APLWH2 497 Sq. Ft. HEPA Air Purifier, so you can maintain your clean air today.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  9. Insignia™ - Insignia Replacement Filter for NS-APMWH2 Insignia 375 Sq. Ft. Air Purifier - White - Front_Zoom
    Top comment

    "Air Filter...The filter fits my air filter. Was delivered quickly....Great Air Filter...This filter fits perfectly in my 375 sqft Insignia Air purifier. "

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    Product Description

    Keep the unpleasant side effects of allergies and odors outside of your home with the Insignia – Replacement Filter for NS-APMWH2 Insignia 375 Sq. Ft. Air Purifier. With a dual layer, this HEPA and activated carbon filter captures 99.97% of particles as small as .3 microns. It removes dust, pollen, irritants and smoke, improving your air quality and visibility. The layer of active carbon also removes odors, keeping your house smelling clean and fresh. Don’t worry about having to constantly change the filter. Depending on your air quality, the filter can last 2,000 hours. It’s designed to replace the filter in the Insignia 375 Sq. Ft. HEPA Air Purifier (NS-APMWH2), so you can maintain your clean air today.
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    Top comment

    "Air Filter...The filter fits my air filter. Was delivered quickly....Great Air Filter...This filter fits perfectly in my 375 sqft Insignia Air purifier. "

    See all customer reviews

    Product Description

    Keep the unpleasant side effects of allergies and odors outside of your home with the Insignia – Replacement Filter for NS-APMWH2 Insignia 375 Sq. Ft. Air Purifier. With a dual layer, this HEPA and activated carbon filter captures 99.97% of particles as small as .3 microns. It removes dust, pollen, irritants and smoke, improving your air quality and visibility. The layer of active carbon also removes odors, keeping your house smelling clean and fresh. Don’t worry about having to constantly change the filter. Depending on your air quality, the filter can last 2,000 hours. It’s designed to replace the filter in the Insignia 375 Sq. Ft. HEPA Air Purifier (NS-APMWH2), so you can maintain your clean air today.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  10. GermGuardian - FLT9200 True HEPA Genuine Replacement Filter H for AC9200 Air Purifiers - White - Front_Zoom
    Top comment

    "Germ Filter...I really like this germ filter and it works great in my air purifier...I love the feeling that my grandson can breathe easier with clean air. The filter is very easy to change. Keeping the air pure for 3years without worrying."

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    Product Description

    GermGuardian FLT9200 HEPA GENUINE Replacement Filter H is a multiple level cleaning system that includes a HEPA filter and an activated carbon filter that both help to improve indoor air quality. The pre-filter sceen that is included with the AC9200W machine purchase can be vacuumed in-between uses and reused with each filter replacement. The HEPA Filter captures 99.97% of dust and allergens as small as .3 microns such as household dust, pet dander, mold spores and plant pollens. The activated granular carbon filter reduces odors from pets, smoking, cooking along with harmful VOC's emitted from a variety of household products and chemicals. Finally, the pre-filter screen captures large dust particles and pet hair, extending filter life. It is recommended to use with the GermGuardian AC9200WCA. The use of this genuine Guardian Technologies replacement part will maintain the product's performance.
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    Top comment

    "Germ Filter...I really like this germ filter and it works great in my air purifier...I love the feeling that my grandson can breathe easier with clean air. The filter is very easy to change. Keeping the air pure for 3years without worrying."

    See all customer reviews

    Product Description

    GermGuardian FLT9200 HEPA GENUINE Replacement Filter H is a multiple level cleaning system that includes a HEPA filter and an activated carbon filter that both help to improve indoor air quality. The pre-filter sceen that is included with the AC9200W machine purchase can be vacuumed in-between uses and reused with each filter replacement. The HEPA Filter captures 99.97% of dust and allergens as small as .3 microns such as household dust, pet dander, mold spores and plant pollens. The activated granular carbon filter reduces odors from pets, smoking, cooking along with harmful VOC's emitted from a variety of household products and chemicals. Finally, the pre-filter screen captures large dust particles and pet hair, extending filter life. It is recommended to use with the GermGuardian AC9200WCA. The use of this genuine Guardian Technologies replacement part will maintain the product's performance.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
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