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Best air purifier

Winix HR900
(Image credit: Amazon)

We spend a lot of our time indoors. But the air inside might not be as clean as you think. Allergens and dirt can cause health problems, with typical indoor pollutants including pollen, dust, mold or fungi spores, bacteria, cigarette smoke, fumes from cleaning products, and volatile organic compounds (VOCs) from things like your carpet, furniture, or paint.  

A good air purifier will quickly clean your air, removing harmful pollutants and increasing the overall pleasantness of your environment. Whether you’re looking for an air purifier for allergies or smoke, you have pets, or you live in an area with polluted outdoor air, we’ve got you covered in this guide. 

Best overall

best air filter

(Image credit: Amazon)

LEVOIT air purifier

Captures 99.97% of particles in the air

The LEVOIT air purifier only takes 12 minutes to clean the air, removing dust, smoke, pollen, and many allergens. This machine tackles mold and pet hair, plus particles as small as 0.3 microns. It removes odors as well. Air gets refreshed five times an hour, and rooms up to 219 square feet are accommodated. This purifier is cylinder-shaped, so it draws air in all directions and not just from a single side. There is also a sleep mode, timer, and filter indicator to let you know when it needs to be replaced.

Best value

best air filter

(Image credit: Amazon)

Winix 5500-2 air purifier

Washable filter

 What makes the Winix 5500-2 air purifier a good value is that it comes with a carbon filter that can be washed and reused repeatedly. The carbon filter is great for eliminating odors in the air, while a second, True HEPA filter traps debris as small as 0.3 microns. This includes dust mites, pollen, and other allergens. The unit handles rooms up to 350 square feet, including family rooms and kitchens. It has a sleep mode that runs quieter at night when set in a bedroom.

Best smart air purifier

best air filter

(Image credit: Amazon)

Honeywell HPA250B Bluetooth purifier

Great filtering capabilities

When it comes to value for money, we consider the Honeywell HPA300 to be the best. This air purifier delivers an impressive Clean Air Delivery Rate (CADR), capturing particles as small as 0.03 microns. It effectively captures 99.97% of airborne particles and accommodates rooms up to 310 square feet. The machine circulates the air in your room once every 12 minutes or five times every hour. You can also download the app and connect your smartphone via Bluetooth. This lets you control settings, set reminders to change the filter, and receive allergen alerts. 

Best for small areas

KOIOS air purifier

(Image credit: Amazon)

KOIOS air purifier

Removes odors

The KOIOS air purifier uses a HEPA filter to remove allergens. This includes dust, mold, smoke, and pet dander. It also eliminates odors, so the air smells clean, too. This machine is compact enough to set on a table or desk, so it’s perfect for smaller areas like your office or bedroom, handling living areas up to 155 square feet. A nightlight feature makes the unit a good choice for children’s rooms. 

Best for large rooms

Blueair Pure 211+

(Image credit: Amazon)

Blueair Blue Pure 211+ air purifier

Cleans larger areas

The Blueair Blue Pure 211+ is a well-designed machine made for large rooms with great purification performance. Its three-stage filter system doesn’t include a True HEPA filter, which is quickly becoming the standard for air purifiers. However, it does include its own particle filter that uses HEPASilent technology to combine mechanical and electrostatic filtration, still capturing minute particles. Combined with 360-degree air intake and a powerful motor, it is a unit that performs brilliantly and has the CADR ratings to back it up. 

Best for pets

Winix HR900

(Image credit: Amazon)

Winix HR900 air purifier

Filters pet dander and odors

The Winix HR900 is the best air purifier for pet owners. Larger particles, such as pet hair and dander, tend to be a particular problem when you share your home with animals. The unit has two pre-filters, including an Ultimate Pet Pre-filter, for an extra layer of protection against pet-related dust and dirt. Its color-coded light system offers real-time feedback on your air quality at a glance, and in auto mode, it will automatically adjust the fan speed, ramping up when poor air quality is detected and dropping down to save energy when air quality is good. 

Choosing the best air purifier for you 

When buying an air purifier, the most important question you need to ask yourself is what exactly do you want the system to do? Specific air purifiers, often because of how they have been designed, are experts at certain types of purification, while others have a focus on cleaning specific room sizes.

For example, if you have pets in your home and have one or more family members who suffer from allergies, then you should probably be looking for an air purifier that scores well in the removal of pet dander (flecks of skin shed by cats, dogs, rodents, birds and other animals with fur or feathers).

If you’re looking to outfit an open-plan apartment, then you should be looking for a different air purifier than if you are trying to clean the air in a house bedroom—after all, you’re going to want to consider smoke.

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