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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. Levoit - PlasmaPro 200S True HEPA Replacement Filter - White - Front_Zoom
    Top comment

    "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...Love the purifier & filters!...The purifier & long-lasting filter are great products that helps us both sleep better!"

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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. 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 200S series.
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    Top comment

    "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...Love the purifier & filters!...The purifier & long-lasting filter are great products that helps us both sleep better!"

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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. 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 200S series.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  2. Genuine HEPA Pure Replacement Filter B for GermGuardian Air Purifier Models AC4800 Series, AC4300, AC4900, CDAP4500 - Black - 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

    In today's rapidly changing environment, the air we breathe is no longer as pure as it once was. Urban growth, industrial emissions, and the luxuries of modern living have introduced a myriad of pollutants into our everyday lives. From bustling cities to quiet suburban homes, the threat of inhaling harmful particles like smoke, chemicals, and allergens has become an everyday concern. At Guardian, we can help you tackle these challenges at the microscopic level. Our FLT4825 Genuine HEPA filter traps 99.97% of airborne viruses, bacteria, mold spores, and particles as small 0.1 microns. While off-brand imitators claim to do the job, they often fall short, allowing minuscule but harmful particles to remain, posing a threat to our health. Investing in a high-quality filter, offering certified fit and superior filtration, is an investment in yourself and your family. Our Guardian air purifier replacement filters not only ensure a snug fit but also promise unparalleled filtration efficiency. In an era where the quality of the air we breathe can significantly impact our health, opting for Germ Guardian HEPA PURE is a step towards a purer future.
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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

    In today's rapidly changing environment, the air we breathe is no longer as pure as it once was. Urban growth, industrial emissions, and the luxuries of modern living have introduced a myriad of pollutants into our everyday lives. From bustling cities to quiet suburban homes, the threat of inhaling harmful particles like smoke, chemicals, and allergens has become an everyday concern. At Guardian, we can help you tackle these challenges at the microscopic level. Our FLT4825 Genuine HEPA filter traps 99.97% of airborne viruses, bacteria, mold spores, and particles as small 0.1 microns. While off-brand imitators claim to do the job, they often fall short, allowing minuscule but harmful particles to remain, posing a threat to our health. Investing in a high-quality filter, offering certified fit and superior filtration, is an investment in yourself and your family. Our Guardian air purifier replacement filters not only ensure a snug fit but also promise unparalleled filtration efficiency. In an era where the quality of the air we breathe can significantly impact our health, opting for Germ Guardian HEPA PURE is a step towards a purer future.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  3. 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.
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    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
    See all Air Purifier Filters & Parts
  4. Replacement Filter Set for Winix P300, 5300, 5500 and 6300 Air Cleaners - Black/White - Front_Zoom
    Top comment

    "Quality Filters...Nice quality filter. They fit perfect. Very satisfied....Great hepa filters...I love that the hepa filters come with a year’s worth of charcoal filters. "

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    Product Description

    Replace the filters in your Winix P300, 5300, 5500 or 6300 air cleaner for up to 1 year with this Winix 115115 set, which contains a True HEPA filter and 4 carbon prefilters to trap both large and small particles, odors and other allergens.
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    Top comment

    "Quality Filters...Nice quality filter. They fit perfect. Very satisfied....Great hepa filters...I love that the hepa filters come with a year’s worth of charcoal filters. "

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    Product Description

    Replace the filters in your Winix P300, 5300, 5500 or 6300 air cleaner for up to 1 year with this Winix 115115 set, which contains a True HEPA filter and 4 carbon prefilters to trap both large and small particles, odors and other allergens.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  5. Genuine HEPA Pure Replacement Filter C for GermGuardian AC5000 Series Air Purifiers - Black - Front_Zoom
    Top comment

    "Great, long lasting filter for my bedroom hepa filter system. Fresh bedroom air. ...good filter...These are pretty good filters. Depending on how much you run your air purifier will determine how long it lasts."

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    Product Description

    GermGuardian® FLT5000 HEPA GENUINE Replacement Filter C is a combination filter. It includes a HEPA filter that captures 99.97% of allergens as small as 0.1 microns. It also contains a pre-filter/activated carbon filter layer that captures odors from cooking, pets and smoking. It is recommended to use with the GermGuardian® AC5000E, AC5250PT, AC5300B, AC5350W, AC5350B, CDAP5500; PureGuardian® AP2800CA, Black+Decker™ Model BXAP250 and Lowe's® Idlyis Model IAP-GG-125. The use of this genuine Guardian Technologies™ replacement part will maintain the product's performance.
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    Top comment

    "Great, long lasting filter for my bedroom hepa filter system. Fresh bedroom air. ...good filter...These are pretty good filters. Depending on how much you run your air purifier will determine how long it lasts."

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    Product Description

    GermGuardian® FLT5000 HEPA GENUINE Replacement Filter C is a combination filter. It includes a HEPA filter that captures 99.97% of allergens as small as 0.1 microns. It also contains a pre-filter/activated carbon filter layer that captures odors from cooking, pets and smoking. It is recommended to use with the GermGuardian® AC5000E, AC5250PT, AC5300B, AC5350W, AC5350B, CDAP5500; PureGuardian® AP2800CA, Black+Decker™ Model BXAP250 and Lowe's® Idlyis Model IAP-GG-125. 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
  6. Honeywell - Replacement Filter - Black - Front_Zoom
    Top comment

    "easy filters to use...great product to go with the air filter system. Don't have much more to say. This is my review...Pre-Filter...It's a pre-filter that comes with 2 pre-filters that you cut to the size you need. "

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    Product Description

    2-PK REPLACEMENT ODOR & GAS PRE-FILTERS
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    Top comment

    "easy filters to use...great product to go with the air filter system. Don't have much more to say. This is my review...Pre-Filter...It's a pre-filter that comes with 2 pre-filters that you cut to the size you need. "

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    Product Description

    2-PK REPLACEMENT ODOR & GAS PRE-FILTERS
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  7. Genuine HEPA Pure Replacement Filter E for GermGuardian Air Purifier Model AC4100 - Black/White - Front_Zoom
    Top comment

    "Great filters!...I really like the air filter and these refills are well worth the price....Perfect for my Germ Guardian small air filter! Shipping was quick and the filters arrived in perfect condition! "

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    Product Description

    GermGuardian FLT4100 HEPA GENUINE Replacement Filter E is a combination filter. It incorporates multiple layers of filtration including HEPA and charcoal to help improve your indoor air quality. HEPA filter captures 99% of dust and allergens, pet dander, mold spores and plant pollens. It is recommended to use with the GermGuardian AC4100, AC4175W or AC4150P/AC4150BL. The use of this genuine Guardian Technologies replacement part will maintain the product's performance.
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    Top comment

    "Great filters!...I really like the air filter and these refills are well worth the price....Perfect for my Germ Guardian small air filter! Shipping was quick and the filters arrived in perfect condition! "

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    Product Description

    GermGuardian FLT4100 HEPA GENUINE Replacement Filter E is a combination filter. It incorporates multiple layers of filtration including HEPA and charcoal to help improve your indoor air quality. HEPA filter captures 99% of dust and allergens, pet dander, mold spores and plant pollens. It is recommended to use with the GermGuardian AC4100, AC4175W or AC4150P/AC4150BL. 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
  8. Levoit - Vital 100 Plus True HEPA Replacement Filter - Gray - Front_Zoom
    Top comment

    "Levoit filters that My original user guide says!!...Keep your user guide. to reorder filter they...great filter...We like this air purifier and I was glad I could buy replacement filters straight from the vendor. Thanks for a great product!"

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    Product Description

    Capture odors, allergens, and other airborne contaminants with the Vital 100-RF True HEPA 3-Stage Replacement Filter. 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 Vital 100 Plus series.
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    Top comment

    "Levoit filters that My original user guide says!!...Keep your user guide. to reorder filter they...great filter...We like this air purifier and I was glad I could buy replacement filters straight from the vendor. Thanks for a great product!"

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    Product Description

    Capture odors, allergens, and other airborne contaminants with the Vital 100-RF True HEPA 3-Stage Replacement Filter. 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 Vital 100 Plus series.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  9. Levoit - True HEPA 3-Stage Pet Allergy Filter - White - Front_Zoom
    Top comment

    "Great air filter...Great filter for my air purifier. Works great!!! Room is so much cleaner. "

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    Product Description

    This certified Levoit replacement filter for the Levoit Pet Care True HEPA Air Purifier to keep your air purifier working at full capacity. The high efficiency carbon filter uses Air Reborn Odor Removal formula and high-grade granular carbon, which is more effective to absorb and chemically decompose pet allergies, odors and cooking smells. This ultra-fine nylon pre-filter captures large particles such as dust, lint, fibers, hair and pet fur, also helpful to maximize the filter's life.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. Breathe fresh with Levoit Air Purifiers and Filters!
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    Top comment

    "Great air filter...Great filter for my air purifier. Works great!!! Room is so much cleaner. "

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    Product Description

    This certified Levoit replacement filter for the Levoit Pet Care True HEPA Air Purifier to keep your air purifier working at full capacity. The high efficiency carbon filter uses Air Reborn Odor Removal formula and high-grade granular carbon, which is more effective to absorb and chemically decompose pet allergies, odors and cooking smells. This ultra-fine nylon pre-filter captures large particles such as dust, lint, fibers, hair and pet fur, also helpful to maximize the filter's life.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. Breathe fresh with Levoit Air Purifiers and Filters!
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  10. Replacement Filter Set for Winix P450 and U450 Air Cleaners - Black/White - Front_Zoom
    Top comment

    "I am very grateful to Best Buy for having this filter in stock....We love our air purifier. Filters are easy to order and receive quickly."

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    Product Description

    This Winix 113250 set contains a True HEPA filter and 4 carbon prefilters that trap pet dander, smoke, odors and other allergens, so you can easily replace the filters in your Winix P450 or U450 air cleaner for up to 1 year.
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    Top comment

    "I am very grateful to Best Buy for having this filter in stock....We love our air purifier. Filters are easy to order and receive quickly."

    See all customer reviews

    Product Description

    This Winix 113250 set contains a True HEPA filter and 4 carbon prefilters that trap pet dander, smoke, odors and other allergens, so you can easily replace the filters in your Winix P450 or U450 air cleaner for up to 1 year.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
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