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8 best air purifiers you can buy on Amazon

Almost any home can benefit from an air purifier. For city dwellers, they reduce indoor pollution. For allergy sufferers, they remove pollen and pet dander from the air. Air purifiers can even eliminate cooking odors, wildfire smoke, mold spores, viruses and more. These air purifiers on Amazon can clean rooms of all sizes, so you can breathe easier knowing your home is healthier.

In this article: Blueair Pure 311 Auto Air Purifier, Coway Mighty AP-1512HH True HEPA Purifier and Levoit Core 300 Air Purifier.

Types of filtration

Since different types of filters remove different types of pollutants, it's a good idea to look for an air purifier with two or more filtration stages.

High-energy particulate air filters, or HEPA filters, are the best choice for trapping major irritants, including dust, bacteria, mold, pollen and more. Some HEPA filters are capable of trapping particles as small as 0.01 microns. Most air purifiers for the home capture particles measuring 0.1 to 0.3 microns and can remove up to 99.97% of particles.

To remove odors from pets or cooking, smoke and even radon, look for an air purifier that can capture VOCs, or volatile organic compounds. These purifiers usually contain an activated carbon filter in addition to a HEPA filter.

Finally, you may want an air purifier with a pre-filter that catches large particles, such as dust and dirt, before they reach the other filters. These kinds of filters are generally easier to change and clean, and they'll extend the life span of your HEPA filter.

Ionizing air purifiers

Some air purifiers are categorized as ozone generators, while others have onboard ionizers, which perform a similar function. Ozone generators release ozone to kill odor-causing bacteria, but since ozone is a respiratory hazard, ozone generators can exacerbate lung conditions and should only be used in an empty room.

Air purifiers sometimes include ionizing technology, which charges airborne particles so they cling to surfaces instead of floating around. Some ionizing air purifiers also have built-in UV-C lights which can kill, rather than trap, airborne bacteria and mold. Since ionization also emits ozone, it's a good idea to run them while you — and any children or pets — are out of the room.

Air purifier room size

Air purifiers can clean anywhere from 40 to around 1,000 square feet. Compact air purifiers may take up less space, but they have smaller coverage areas as well. However, most home air purifiers weigh less than 25 pounds, so they're easy to move from room to room as needed.

Air purifiers use a few different ratings to help shoppers figure out the one that's right for them.

  • Cubic feet per minute, or CFM, tells you how much air a purifier can process every minute.
  • Air change per hour, or ACH, shows how often the purifier fully cycles a specified volume of air every hour. For example, the ACH for a large living room will be lower than the ACH for a small office because it will take longer to process the larger volume of air.
  • Clean air delivery rate, or CADR, indicates how much filtered air the purifier delivers. Higher numbers indicate faster cleaning. The number will vary depending on what kinds of particulates the purifier removes.

Best air purifiers

Blueair Pure 311 Auto Air Purifier

This popular purifier features HEPASilent dual filtration, which can clean 400-square-foot rooms in less than 15 minutes with 67% less noise than typical HEPA systems. It can remove 99.97% of contaminants as small as 0.1 microns, including cooking odors and smoke.

Sold by Amazon

Coway Mighty AP-1512HH True HEPA Purifier

Compact yet powerful, this purifier can handle rooms up to 874 square feet with its four-stage filtration system. It has onboard sensors that let you know how your indoor air quality is and can even turn itself off if it doesn't detect any pollutants.

Sold by Amazon

Levoit Core 300 Air Purifier

This compact, simple air purifier works great in small spaces measuring around 200 square feet. It uses a pre-filter, an H13 True HEPA filter and a carbon filter to capture contaminants while still operating quietly.

Sold by Amazon

Pro Breeze 5-in-1 Air Purifier

Featuring a four-stage filtration system, this air purifier can capture up to 99.97% of particles down to 0.3 microns. It also has a negative ion generator, which can capture and neutralize airborne pollutants.

Sold by Amazon

Medify 2-pack MA-25 Air Purifier

Sold in a set of two, these HH13 HEPA air purifiers can cover a total of 1,000 square feet. They feature easy touchscreen controls and a child lock, and their triple filtration captures allergens, smoke, dander and more particles down to 0.1 microns.

Sold by Amazon

PureEnrichment PureZone 3-in-1  Air Purifier

This feature-packed air purifier uses a two-stage filtration system to purify rooms up to 300 square feet. It also offers a bacteria-killing UV-C light, auto shut-off and a sleep mode with dimmer lights.

Sold by Amazon

Germ Guardian True HEPA Air Purifier

This four-in-one purifier includes a HEPA filter for particles as small as 0.3 microns, a charcoal filter and UV-C light working in tandem with titanium dioxide to kill airborne bacteria. Choose from five fan speed options to prioritize cleaning air quickly or quietly.

Sold by Amazon

Levoit Core Mini Air Purifier

Perfect for small rooms or nightstands, this petite air purifier operates as quietly as 25 decibels while capturing allergens and other particles in its three-stage filter. It also includes an aroma pad for dispersing essential oils.

Sold by Amazon

Worth checking out

  • Great for larger rooms, Blueair Blue Pure 211+ features a quiet yet high-performing HEPASilent filtration system.
  • If you're looking for an air purifier with smart features, the Winix AM90 is Alexa-compatible and can be controlled via an app.
  • The Levoit 400S also offers smart features and app controls, plus it has a quiet-running night mode.
  • The Germ Guardian AC4825E removes allergens and other pollutants efficiently from small- to medium-sized rooms, and it reduces odor and airborne germs.


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Laura Duerr writes for BestReviews. BestReviews has helped millions of consumers simplify their purchasing decisions, saving them time and money.

BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers.

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