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

When it comes to filters for your air conditioner, furnace, or other household systems, you want to make sure that you're buying the best quality filter for your money. Browse the top-ranked list of cheap filters below along with associated reviews and opinions.

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  1. Replacement Particle Filter for Blueair Classic 400 Series Air Purifies - White - Front_Zoom
    Top comment

    "Replacement filters aren't cheap, but that's about the only Con honestly....Love my Blueair air purifier and the filters are easy to replace....Filter works great"

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    Product Description

    Freshen up your space with this Blueair Classic 400 series particle filter. The HEPASilent filtration combines electrostatic and mechanical filtration to remove 99.97 percent of particles down to 0.1 microns in size. Antibacterial polypropylene fibers prevent mold and bacterial growth, while porous activated carbon allows this Blueair Classic 400 series particle filter to capture gases and odors.
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    Top comment

    "Replacement filters aren't cheap, but that's about the only Con honestly....Love my Blueair air purifier and the filters are easy to replace....Filter works great"

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    Product Description

    Freshen up your space with this Blueair Classic 400 series particle filter. The HEPASilent filtration combines electrostatic and mechanical filtration to remove 99.97 percent of particles down to 0.1 microns in size. Antibacterial polypropylene fibers prevent mold and bacterial growth, while porous activated carbon allows this Blueair Classic 400 series particle filter to capture gases and odors.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  2. Levoit - True HEPA 3-Stage Original Filter for VortexAir Purifier - White - Front_Zoom
    Top comment

    "Filter...Nice product its an air filter it filters the air...I was thinking of getting this at Amazon but after reading that some of the filters sold on Amazon are just cheap copies I was glad I was able to find the original being sold at BestBuy."

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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.
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    Top comment

    "Filter...Nice product its an air filter it filters the air...I was thinking of getting this at Amazon but after reading that some of the filters sold on Amazon are just cheap copies I was glad I was able to find the original being sold at BestBuy."

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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.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  3. HEPA Filter for GermGuardian AC4825 3-in-1 and AC4900CA - Black/White - Front_Zoom
    Top comment

    "Good filter...They last a long time, do a good job filtering and are fairly cheap to replace versus other air purifiers. Can’t complain....Good filter really easy to switch out the filters would recommend"

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    Product Description

    Reduce allergens around your home or office with this GermGuardian True HEPA replacement filter for select air purifiers. The charcoal layer minimizes pet odors and overwhelming aromas when cooking, while the unique build captures even the smallest microns, including household dust and pet dander. This GermGuardian True HEPA replacement filter features a pre-filter layer that captures large dust particles.
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    Top comment

    "Good filter...They last a long time, do a good job filtering and are fairly cheap to replace versus other air purifiers. Can’t complain....Good filter really easy to switch out the filters would recommend"

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    Product Description

    Reduce allergens around your home or office with this GermGuardian True HEPA replacement filter for select air purifiers. The charcoal layer minimizes pet odors and overwhelming aromas when cooking, while the unique build captures even the smallest microns, including household dust and pet dander. This GermGuardian True HEPA replacement filter features a pre-filter layer that captures large dust particles.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  4. Blueair - Particle + Carbon Replacement Filter for Blue Pure 211+ Auto Air Purifier - White - Front_Zoom
    Top comment

    "It filters...The filter fits and does what it's supposed to do. What more is there to say?...Air filter...Love my air filter. Like the fact it has a washable cloth as a pre filter. "

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    Product Description

    Genuine Blueair replacement filter compatible with the Blue Pure 211+ Auto only. This filter is not compatible with the standard 211+ or MAX models. If used with the 211+ or MAX, the clean air delivery rate (CADR) will decline.​ The Combination Particle + Carbon filter protects against both gaseous and particulate contaminates. Advanced polypropylene filter media removes particle pollutants from your indoor air, such as pollen, dust, and pet dander. At the same time, a layer of activated carbon mesh traps light household odors from pets, cooking, smoke, and more. The 360-degree design allows the filter surface area to be over 20 square feet in size.
    See all Air Purifier Filters & Parts
    Top comment

    "It filters...The filter fits and does what it's supposed to do. What more is there to say?...Air filter...Love my air filter. Like the fact it has a washable cloth as a pre filter. "

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    Product Description

    Genuine Blueair replacement filter compatible with the Blue Pure 211+ Auto only. This filter is not compatible with the standard 211+ or MAX models. If used with the 211+ or MAX, the clean air delivery rate (CADR) will decline.​ The Combination Particle + Carbon filter protects against both gaseous and particulate contaminates. Advanced polypropylene filter media removes particle pollutants from your indoor air, such as pollen, dust, and pet dander. At the same time, a layer of activated carbon mesh traps light household odors from pets, cooking, smoke, and more. The 360-degree design allows the filter surface area to be over 20 square feet in size.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  5. Blueair - Replacement Filter for Blue Pure 411, 411+, 411 Auto Air Purifiers - Black/White - Alt_View_Zoom_11
    Top comment

    "Replacement Air Filter...It filters air! Old filters get dirty so it is important to replace the filter....Quality Filters...Easy filter replacement."

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    Product Description

    Genuine Blueair Replacement filter compatible with Blue Pure 411, 411+, MINI, and 411 Auto air purifier models. The Combination Particle + Carbon filter protects against both gaseous and particulate contaminates. Advanced polypropylene filter media removes particle pollutants from your indoor air, such as pollen, dust, and pet dander. At the same time, a layer of activated carbon mesh traps light household odors from pets, cooking, smoke, and more. The 360-degree design allows the filter surface area to be over 13 square feet in size.
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    Top comment

    "Replacement Air Filter...It filters air! Old filters get dirty so it is important to replace the filter....Quality Filters...Easy filter replacement."

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    Product Description

    Genuine Blueair Replacement filter compatible with Blue Pure 411, 411+, MINI, and 411 Auto air purifier models. The Combination Particle + Carbon filter protects against both gaseous and particulate contaminates. Advanced polypropylene filter media removes particle pollutants from your indoor air, such as pollen, dust, and pet dander. At the same time, a layer of activated carbon mesh traps light household odors from pets, cooking, smoke, and more. The 360-degree design allows the filter surface area to be over 13 square feet in size.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  6. Dyson - Genuine Air Purifier Replacement Filter (HP01, HP02, DP01) 360° Glass HEPA Filter - Green/White - Front_Zoom
    Top comment

    "Genuine Dyson filters make the difference....True dyson filters have a tight weaved baffle on filter, the activated charcoal is a thick layer. ...GOOD FILTER FROM DYSON...easy to install, please don't cheap out on 3rd party filters and buy the real deal. "

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    Product Description

    Replacement filter for Dyson Pure Hot+Cool Link (HP02) , Dyson Pure Cool Link (DP02) , and Dyson Pure Hot+Cool (HP01) purifying heater + fan. The 360° sealed HEPA filter is made from 20 feet of borosilicate microfibers pleated 333 times, to capture 99.97% of particles as small as 0.3 microns such as allergens. Dyson recommends replacing your filter every 12 months. Over time, filters can get clogged with pollutants, reducing air flow.
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    Top comment

    "Genuine Dyson filters make the difference....True dyson filters have a tight weaved baffle on filter, the activated charcoal is a thick layer. ...GOOD FILTER FROM DYSON...easy to install, please don't cheap out on 3rd party filters and buy the real deal. "

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    Product Description

    Replacement filter for Dyson Pure Hot+Cool Link (HP02) , Dyson Pure Cool Link (DP02) , and Dyson Pure Hot+Cool (HP01) purifying heater + fan. The 360° sealed HEPA filter is made from 20 feet of borosilicate microfibers pleated 333 times, to capture 99.97% of particles as small as 0.3 microns such as allergens. Dyson recommends replacing your filter every 12 months. Over time, filters can get clogged with pollutants, reducing air flow.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  7. Honeywell - HEPA Air Purifier Filter Value Kit - A and R Filters - Black White - Front_Zoom
    Top comment

    "Great Filters...Convenient 3 pack of filters (1 charcoal pre-filter and 2 HEPA filters)....Great filters for use in Honeywell air filter system."

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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...Convenient 3 pack of filters (1 charcoal pre-filter and 2 HEPA filters)....Great filters for use in Honeywell air filter system."

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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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    See all Air Purifier Filters & Parts
  8. Dyson - Genuine Replacement Filter Combi 360° Glass HEPA and Activated Carbon Filter (HP04-09,TP04-09,TP7A,DP04,PH01-04,PH3A) - Black/White - Front_Zoom
    Top comment

    "Seems Dyson downgraded the filters to save cost. Looks cheap, but expensive....Cheap long lasting filters...By far the best dyson air filter system I have owned. I bought this during covid and the filter lasted 11 months. "

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    Product Description

    Replacement HEPA filter engineered for the following Dyson purifiers: HP09, TP09, HP07, TP07, PH01, PH02, HP06, TP06, HP04, TP04, DP04. We recommend replacing your filter every 12 months. Over time, filters can get clogged with pollutants, reducing air flow. Using Dyson Genuine replacement filters ensures a sealed filtration system, HEPA standard and proper functioning of the machine.
    See all Air Purifier Filters & Parts
    Top comment

    "Seems Dyson downgraded the filters to save cost. Looks cheap, but expensive....Cheap long lasting filters...By far the best dyson air filter system I have owned. I bought this during covid and the filter lasted 11 months. "

    See all customer reviews

    Product Description

    Replacement HEPA filter engineered for the following Dyson purifiers: HP09, TP09, HP07, TP07, PH01, PH02, HP06, TP06, HP04, TP04, DP04. We recommend replacing your filter every 12 months. Over time, filters can get clogged with pollutants, reducing air flow. Using Dyson Genuine replacement filters ensures a sealed filtration system, HEPA standard and proper functioning of the machine.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  9. Replacement Filter for Blueair Blue Pure 211+ Air Purifiers - White - Alt_View_Zoom_11
    Top comment

    "New Filter...Fast shipping-perfect fit. Filters out the unwanted elements...It filters...The filter appears to filter. Absent some serious equipment, the best I can say is that the filter appears to filter!"

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    Product Description

    Genuine Blueair replacement filter compatible with the Blue Pure 211+ and Blue Pure MAX models only. This filter is not compatible with the 211+ Auto model. If used with the Blue Pure 211+ Auto, the clean air delivery rate (CADR) will decline.​ The Combination Particle + Carbon filter protects against both gaseous and particulate contaminates. Advanced polypropylene filter media removes particle pollutants from your indoor air, such as pollen, dust, and pet dander. At the same time, a layer of activated carbon mesh traps light household odors from pets, cooking, smoke, and more. The 360-degree design allows the filter surface area to be over 20 square feet in size. ​ Unlike look-a-likes, authentic Blueair replacement filters are designed to maintain premium performance over time and ensures your warranty remains intact. For optimal performance, replace the filter about once every six months when used 24 hours a day. The twist-and-change filter is easily removed and replaced and is recyclable at the end of its service life. Please check your local recycling facilities for availability.
    See all Air Purifier Filters & Parts
    Top comment

    "New Filter...Fast shipping-perfect fit. Filters out the unwanted elements...It filters...The filter appears to filter. Absent some serious equipment, the best I can say is that the filter appears to filter!"

    See all customer reviews

    Product Description

    Genuine Blueair replacement filter compatible with the Blue Pure 211+ and Blue Pure MAX models only. This filter is not compatible with the 211+ Auto model. If used with the Blue Pure 211+ Auto, the clean air delivery rate (CADR) will decline.​ The Combination Particle + Carbon filter protects against both gaseous and particulate contaminates. Advanced polypropylene filter media removes particle pollutants from your indoor air, such as pollen, dust, and pet dander. At the same time, a layer of activated carbon mesh traps light household odors from pets, cooking, smoke, and more. The 360-degree design allows the filter surface area to be over 20 square feet in size. ​ Unlike look-a-likes, authentic Blueair replacement filters are designed to maintain premium performance over time and ensures your warranty remains intact. For optimal performance, replace the filter about once every six months when used 24 hours a day. The twist-and-change filter is easily removed and replaced and is recyclable at the end of its service life. Please check your local recycling facilities for availability.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  10. Levoit - PlasmaPro 200S True HEPA Replacement Filter - White - Front_Zoom
    Top comment

    "Love the purifier & filters!...The purifier & long-lasting filter are great products that helps us both sleep better!...Replacement filters easy to order and good price...First replacement filter I have purchased, they are good filters, prefilter helps lengthen life of filter, easy to order and a good price"

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    Product Description

    Purify your air with reliable H13 True HEPA filtration. Capturing at least 99.97% of airborne particles 0.3 microns in size, as well as smoke, fumes, odors, and VOCs, the filter helps keep your home atmosphere fresh and healthy. Compatible with PlasmaPro 200S.
    See all Air Purifier Filters & Parts
    Top comment

    "Love the purifier & filters!...The purifier & long-lasting filter are great products that helps us both sleep better!...Replacement filters easy to order and good price...First replacement filter I have purchased, they are good filters, prefilter helps lengthen life of filter, easy to order and a good price"

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    Product Description

    Purify your air with reliable H13 True HEPA filtration. Capturing at least 99.97% of airborne particles 0.3 microns in size, as well as smoke, fumes, odors, and VOCs, the filter helps keep your home atmosphere fresh and healthy. Compatible with PlasmaPro 200S.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
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