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

Filters are an important part of your home's HVAC system. They keep the air in your home clean and free of allergens, mold spores, and other airborne impurities. The best air filters will remove particles as small as possible while still allowing enough air to pass through for the system to function. They also need to be easy to install and replace, and they shouldn't cost too much money. Here are some of the most popular air filters on the market today.

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  1. Shark - Air Purifier Anti-Allergen Filter with True HEPA + Microban, Compatible with HP102, HC452 - Gray - Front_Zoom
    Top comment

    "This filter is for the small Shark purifier in our bedroom and we really notice a difference in the air quality!...I bought this shark small air purifier for my bedroom and I bought the air filter replacement. ...Great Air Filter...Shark air filter"

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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. Treated with Microban. Microban reduces bacteria growth on the HEPA filter surface.
    See all Air Purifier Filters & Parts
    Top comment

    "This filter is for the small Shark purifier in our bedroom and we really notice a difference in the air quality!...I bought this shark small air purifier for my bedroom and I bought the air filter replacement. ...Great Air Filter...Shark air filter"

    See all customer reviews

    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. Treated with Microban. Microban reduces bacteria growth on the HEPA filter surface.
    See all Air Purifier Filters & Parts
    See all Air Purifier Filters & Parts
  2. Emerson Quiet Kool - 250 Sq. Ft. 6000 BTU Window Air Conditioner - White - Front_Zoom
    Top comment

    "It’s not as heavy as the older air conditioners....air conditioner"

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    Product Description

    Keep your room at the optimal temperature with this 6000 BTU Emerson air conditioner. Its filter is washable and reusable to reduce maintenance costs, and it has eight-way airflow louvers to ensure air is blowing your way. Maximize your comfort at night with the sleep mode on this Emerson air conditioner, which adjusts temperature overnight.
    See all Window Air Conditioners
    Top comment

    "It’s not as heavy as the older air conditioners....air conditioner"

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    Product Description

    Keep your room at the optimal temperature with this 6000 BTU Emerson air conditioner. Its filter is washable and reusable to reduce maintenance costs, and it has eight-way airflow louvers to ensure air is blowing your way. Maximize your comfort at night with the sleep mode on this Emerson air conditioner, which adjusts temperature overnight.
    See all Window Air Conditioners
    See all Window Air Conditioners
  3. LG - 1,000 Sq. Ft. 18,000 BTU Smart Window Air Conditioner - White - Front_Zoom
    Top comment

    "LG Air Conditioner...Lg air conditioner keep my whole house cool and i love it...Air conditioner"

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    Product Description

    The LG Dual Inverter air conditioners are the best in cooling innovation. This ultra quiet unit operates at 44 dB in sleep mode, almost as quiet as a library. In addition, the DUAL Inverter technology allows the unit to operate efficiently saving you as much as 25% on energy costs. Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. 4 cooling and fan speeds and a 24 hour timer allow you to create a cooling schedule to suit your needs. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include an LCD remote control, easy window installation kit, removable (washable) filter and a check filter alert.
    See all Window Air Conditioners
    Top comment

    "LG Air Conditioner...Lg air conditioner keep my whole house cool and i love it...Air conditioner"

    See all customer reviews

    Product Description

    The LG Dual Inverter air conditioners are the best in cooling innovation. This ultra quiet unit operates at 44 dB in sleep mode, almost as quiet as a library. In addition, the DUAL Inverter technology allows the unit to operate efficiently saving you as much as 25% on energy costs. Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. 4 cooling and fan speeds and a 24 hour timer allow you to create a cooling schedule to suit your needs. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include an LCD remote control, easy window installation kit, removable (washable) filter and a check filter alert.
    See all Window Air Conditioners
    See all Window Air Conditioners
  4. LG - 450 Sq. Ft. Smart Portable Air Conditioner with 12,000 BTU Heater - Black - Front_Zoom
    Top comment

    "Great air conditioner i bought this for my small bedroom and it cools it ice cold. ...Great air conditioner...This air conditioner is great I have a big room and it cools it down very quickly and keeps it cool very cool it's a great air conditioner for hot summers."

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    Product Description

    This portable air conditioner is the SMART choice for versatile cooling! Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This quiet unit is ideal for cooling medium rooms up to 450 sq. ft. You can even add a bit of warmth on cooler days with the supplemental heat option. The unit has 2 cooling and fan speeds and a 24 hour timer to create a cooling schedule. The auto-swing air vent helps direct the flow of air where it's needed most whether cooling, heating, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Easy rolling casters allow you to efficiently move the unit to another location. Other features include an LCD remote control, easy window venting installation kit, removable/washable filter and a check filter alert.
    See all Portable Air Conditioners
    Top comment

    "Great air conditioner i bought this for my small bedroom and it cools it ice cold. ...Great air conditioner...This air conditioner is great I have a big room and it cools it down very quickly and keeps it cool very cool it's a great air conditioner for hot summers."

    See all customer reviews

    Product Description

    This portable air conditioner is the SMART choice for versatile cooling! Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. This quiet unit is ideal for cooling medium rooms up to 450 sq. ft. You can even add a bit of warmth on cooler days with the supplemental heat option. The unit has 2 cooling and fan speeds and a 24 hour timer to create a cooling schedule. The auto-swing air vent helps direct the flow of air where it's needed most whether cooling, heating, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Easy rolling casters allow you to efficiently move the unit to another location. Other features include an LCD remote control, easy window venting installation kit, removable/washable filter and a check filter alert.
    See all Portable Air Conditioners
    See all Portable Air Conditioners
  5. LG - 1,440 Sq. Ft. 23,500 BTU Smart Window Air Conditioner - White - Front_Zoom
    Top comment

    "Simply to set temperature and fan speeds. Easy to access filter for cleaning....Air conditioning...The air-conditioning is working gteat. It is very cold."

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    Product Description

    The LG Dual Inverter air conditioners are the best in cooling innovation. This ultra quiet unit operates at 44 dB in sleep mode, almost as quiet as a library. In addition, the DUAL Inverter technology allows the unit to operate efficiently saving you as much as 15% on energy costs. Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. 4 cooling and fan speeds and a 24 hour timer allow you to create a cooling schedule to suit your needs. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include an LCD remote control, easy window installation kit, removable (washable) filter and a check filter alert.
    See all Air Conditioners
    Top comment

    "Simply to set temperature and fan speeds. Easy to access filter for cleaning....Air conditioning...The air-conditioning is working gteat. It is very cold."

    See all customer reviews

    Product Description

    The LG Dual Inverter air conditioners are the best in cooling innovation. This ultra quiet unit operates at 44 dB in sleep mode, almost as quiet as a library. In addition, the DUAL Inverter technology allows the unit to operate efficiently saving you as much as 15% on energy costs. Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. 4 cooling and fan speeds and a 24 hour timer allow you to create a cooling schedule to suit your needs. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include an LCD remote control, easy window installation kit, removable (washable) filter and a check filter alert.
    See all Air Conditioners
    See all Air Conditioners
  6. LG - 150 Sq. Ft. 5,000 BTU Window Air Conditioner - White - Front_Zoom
    Top comment

    "Great air conditioner! Love that the air vent is on top rather than in front & blowing air straight out. ...Good little air conditioner...Good little air conditioner. Was the only air conditioner I could find small enough to fit in attic window."

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    Product Description

    It’s important to get the right air conditioner for the job! The LG LW5016 is ideal for cooling small to medium rooms up to 150 sq. ft. This unit has 2 cooling and fan speeds and 2-way air deflection that lets the flow of air be directed where it's needed most. Whether cooling, dehumidifying or just circulating air this small but powerful air conditioner does the job. Other features include an easy window installation kit and removable, washable filter.
    See all Window Air Conditioners
    Top comment

    "Great air conditioner! Love that the air vent is on top rather than in front & blowing air straight out. ...Good little air conditioner...Good little air conditioner. Was the only air conditioner I could find small enough to fit in attic window."

    See all customer reviews

    Product Description

    It’s important to get the right air conditioner for the job! The LG LW5016 is ideal for cooling small to medium rooms up to 150 sq. ft. This unit has 2 cooling and fan speeds and 2-way air deflection that lets the flow of air be directed where it's needed most. Whether cooling, dehumidifying or just circulating air this small but powerful air conditioner does the job. Other features include an easy window installation kit and removable, washable filter.
    See all Window Air Conditioners
    See all Window Air Conditioners
  7. LG - 550 Sq. Ft. 11,800 BTU In Wall Air Conditioner - White - Front_Zoom
    Top comment

    "Replaced old air conditioner...We replaced a 20 year old wall air conditioner with this one. Runs more efficiently and looks much nicer....Cool Air......[This review was collected as part of a promotion.] Pro it blows cool air Pro it's has dry mood which dehumidifier air making even more cool in room Con it's loud even on lowest level"

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    Product Description

    Our Energy Star certified 11,800 BTU Through-the-Wall Air Conditioner is ideal for cooling medium size rooms up to 550 sq. ft. It has 3 cooling and fan speeds to customize your comfort. The 4-way air deflection allows you to direct the flow of air where it's needed most whether cooling, dehumidifying or just circulating air. Use the convenient 24 hour on/off timer and energy saver option to help save on energy costs. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, trim kit, removable/washable filter and a check filter alert. (Wall sleeve sold separately)
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    Top comment

    "Replaced old air conditioner...We replaced a 20 year old wall air conditioner with this one. Runs more efficiently and looks much nicer....Cool Air......[This review was collected as part of a promotion.] Pro it blows cool air Pro it's has dry mood which dehumidifier air making even more cool in room Con it's loud even on lowest level"

    See all customer reviews

    Product Description

    Our Energy Star certified 11,800 BTU Through-the-Wall Air Conditioner is ideal for cooling medium size rooms up to 550 sq. ft. It has 3 cooling and fan speeds to customize your comfort. The 4-way air deflection allows you to direct the flow of air where it's needed most whether cooling, dehumidifying or just circulating air. Use the convenient 24 hour on/off timer and energy saver option to help save on energy costs. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, trim kit, removable/washable filter and a check filter alert. (Wall sleeve sold separately)
    See all In-Wall Air Conditioners
    See all In-Wall Air Conditioners
  8. LG 24,500 BTU 230V Window-Mounted Air Conditioner with Remote Control - White - Front_Zoom
    Top comment

    "LG Window Air Conditioner...[This review was collected as part of a promotion.] Air Conditioner worked great. Very nice price too....The LG 24500 air conditioner...The LG air conditioner is a great air conditioner. I will recommend it to my family and friends."

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    Product Description

    It’s important to get the right air conditioner for the job! The LG LW2516ER is ideal for cooling medium to large rooms up to 1,300 sq. ft. This Energy Star certified unit has 3 cooling and fan speeds and a 24 hour timer to create a cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, removable, washable filter and a check filter alert.
    See all Air Conditioners
    Top comment

    "LG Window Air Conditioner...[This review was collected as part of a promotion.] Air Conditioner worked great. Very nice price too....The LG 24500 air conditioner...The LG air conditioner is a great air conditioner. I will recommend it to my family and friends."

    See all customer reviews

    Product Description

    It’s important to get the right air conditioner for the job! The LG LW2516ER is ideal for cooling medium to large rooms up to 1,300 sq. ft. This Energy Star certified unit has 3 cooling and fan speeds and a 24 hour timer to create a cooling schedule. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include a remote control, easy window installation kit, removable, washable filter and a check filter alert.
    See all Air Conditioners
    See all Air Conditioners
  9. LG - 800 Sq. Ft. 14,000 BTU Smart Window Air Conditioner - White - Front_Zoom
    Top comment

    "- excellent unit so far. large sturdy filter, strong unit and silent. even for small rooms i will recommend, because your air will be clean and temp confortable....In fact I might buy another one to replace another a/c. It's not your old air conditioner. It has wifi, a filter time that tells you when to clean the filter, a phone app to control it from anywhere and there are no grill in front of the filter. "

    See all customer reviews

    Product Description

    The LG Dual Inverter air conditioners are the best in cooling innovation. This ultra-quiet unit operates at 44 dB in sleep mode, almost as quiet as a library. In addition, the DUAL Inverter technology allows the unit to operate efficiently saving you as much as 35% on energy costs. Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. 4 cooling and fan speeds and a 24 hour timer allow you to create a cooling schedule to suit your needs. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include an LCD remote control, easy window installation kit, removable (washable) filter and a check filter alert.
    See all Air Conditioners
    Top comment

    "- excellent unit so far. large sturdy filter, strong unit and silent. even for small rooms i will recommend, because your air will be clean and temp confortable....In fact I might buy another one to replace another a/c. It's not your old air conditioner. It has wifi, a filter time that tells you when to clean the filter, a phone app to control it from anywhere and there are no grill in front of the filter. "

    See all customer reviews

    Product Description

    The LG Dual Inverter air conditioners are the best in cooling innovation. This ultra-quiet unit operates at 44 dB in sleep mode, almost as quiet as a library. In addition, the DUAL Inverter technology allows the unit to operate efficiently saving you as much as 35% on energy costs. Cool your home from anywhere using LG ThinQ technology to control your air conditioner with your phone or use with Amazon Alexa and Hey Google to have control with the sound of your voice. 4 cooling and fan speeds and a 24 hour timer allow you to create a cooling schedule to suit your needs. 4-way air deflection lets the flow of air be directed where it's needed most whether cooling, dehumidifying or just circulating air. If there is a power outage, the auto restart feature will automatically turn your unit back on when power is restored. Other features include an LCD remote control, easy window installation kit, removable (washable) filter and a check filter alert.
    See all Air Conditioners
    See all Air Conditioners
  10. Frigidaire - Gallery 1.9 Cu. Ft. Over-The-Range Microwave with Sensor Cook - Stainless Steel - Front_Zoom
    Top comment

    "The door opens and closes easily, and the filter slots opens easily without screws, unlike the older model. ...If you chose to have the air blow back into your kitchen, it contains a second filter to remove oils and odors. "

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    Product Description

    The Gallery 1.9 Cu. Ft. Over-The-Range Microwave with Sensor Cook, delivers delicious meals by automatically determining and setting the appropriate power levels and cook time. Plus changing your filter has never been more convenient with our Push-to-Open PureAir Filter Door and filter indicator light. Also includes a Frigidaire PureAir Filter and features a stylish full-width door along with our fingerprint resistant, Smudge-Proof Black Stainless Steel finish.
    See all All Microwaves
    Top comment

    "The door opens and closes easily, and the filter slots opens easily without screws, unlike the older model. ...If you chose to have the air blow back into your kitchen, it contains a second filter to remove oils and odors. "

    See all customer reviews

    Product Description

    The Gallery 1.9 Cu. Ft. Over-The-Range Microwave with Sensor Cook, delivers delicious meals by automatically determining and setting the appropriate power levels and cook time. Plus changing your filter has never been more convenient with our Push-to-Open PureAir Filter Door and filter indicator light. Also includes a Frigidaire PureAir Filter and features a stylish full-width door along with our fingerprint resistant, Smudge-Proof Black Stainless Steel finish.
    See all All Microwaves
    See all All Microwaves
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