Answer:

Some portable air cleaners (or "air purifiers") can help remove microbial particles, i.e., viruses (such as the coronavirus that causes COVID-19), bacteria and fungi. These devices can be part of a strategy for protecting people indoors when used along with other recommended practices. Many of these air cleaners can also effectively remove smoke particles and odors.

To help you understand and compare air purifiers, sign-in for the complete answer in which we review dozens of products, showing which we recommend or don't recommend, and which devices are our Top Picks for use in different sized rooms based on their validated performances, certifications and other objective ratings. We also discuss and compare the main types of filters, including fibrous air filters (including true HEPA vs. HEPA-type filters), UVGI filters, electrostatic filters and ionizers (which are often used in personal or "wearable" air purifiers), and filters for removing VOCs.

We review the following air purifiers:

  • Aerus QuietPure Whisper Air Purifier
  • AirDoctor 3000 Professional Air Purifier
  • Aireox Air Purifier Model 45D
  • Airpura UV600 Air Purifier
  • AirSoap Air Purifier
  • Air Oasis iAdaptAir (M) HEPA Air Purifier
  • Alen BreatheSmart FLEX Air Purifier
  • Alen T500 True HEPA Tower Air Purifier
  • Amway Atmosphere Sky Air Treatment System
  • Austin Air HealthMate HM400
  • Biota Bot 608 Air Purifier
  • Blueair Blue Classic 605 Air Purifier
  • Blueair Blue Pure 211+ Air Purifier
  • Blueair Blue Pure 411 Air Purifier
  • Brid Air Purifier
  • CleanAir Whole Home Air Purifier
  • Coway Airmega 300 Air Purifier
  • Coway AP-1512HH Mighty Air Purifier
  • Dyson TP04 Pure Cool Air Purifying Fan
  • Dyson Pure Humidify + Cool PH01
  • EdenPURE OxiLeaf II Thunderstorm Air Purifier
  • EnviroKlenz Mobile Air System With UV Light
  • GermGuardian AC5250PT 5-in-1 Pet Pure Air Purifier
  • GermGuardian True HEPA Filter Air Purifier AC4200W
  • Hathaspace HSP002 Smart True HEPA Air Purifier 2.0
  • HoMedics TotalClean 4-in-1 Small Room Air Purifier
  • Honeywell True HEPA 50250
  • Idylis 3-Speed 310-sq ft HEPA Air Purifier
  • Ionic Comfort Air Purifier
  • IQAir HealthPro Plus Air Purifier
  • Lasko HEPA HF25620 Air Purifier
  • Levoit Core 300 True HEPA Air Purifier
  • Medify Air MA-25 Air Purifier
  • Molekule Air Air Purifier
  • Nuwave OxyPure Smart Air Purifier
  • Oransi EJ120 Air Purifier
  • Philips Air Purifier Series 5000i
  • Rabbit Air BioGS 2.0 SPA-625A Ultra Quiet Air Purifier
  • Rowenta Intense Pure Air XL
  • SilverOnyx Air Purifier with True HEPA Carbon Filter, UV Light, Ionizer
  • Therapure TPP240 Air Purifier
  • TRACS Portable UV-C Air Purifier
  • Venta Original LW25 Airwasher
  • VEVA 8000 Elite Pro Series Air Purifier
  • Vollara Air & Surface Pro
  • Whirlpool WPPRO2000 Whispure Air Purifier
  • Winix C535 Air Cleaner


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45 Comments

Join the conversation

Barney21808
January 3, 2021

Does low humidity in winter effect rates ot Covid 19 infection ...say humidity 20s vs summer 50s ? If so would humidifiers to add more water to winter air be useful? We r in SW FL.

ConsumerLab.com
January 13, 2021

Please see the "Humidity may help" section in the answer above.

Anna21363
November 18, 2020

Isn’t cubic square feet relevant to capacity? The open part of my apartment is 700 sq ft, with 11 ft ceilings. Without a discussion of total volume, not just square feet, I’m reluctant to buy anything. It seems like I would need two large machines.
It would be very helpful if you would address this issue, which is even more significant for people with large, open houses.

ConsumerLab.com
November 19, 2020

Great question! The suggested room sizes (in square feet) provided in our answer above assume a ceiling height of 8 ft. Because your ceilings are higher than 8 ft., you'll want an air cleaner rated for a larger room. If you have an area that is larger than any available product will serve, the EPA notes that you could consider using multiple air cleaners.

Anna21389
November 22, 2020

Aside from the expense of buying and maintaining two large air purifiers, I think the noise, which folks complain about for a single purifier on high, would be difficult, if not impossible, to live with. So, as I suspected, there’s no solution for those of use with “open plan” spaces. Alas.

Jeff21343
November 15, 2020

Can you please review the Idylis 3-Speed 310-sq ft HEPA Air Purifier? I bought mine at Lowe's about 10 years ago. I want to know if it is a good air purifier or, if I need to replace it with one of your recommendations. Thank you SO very much!

ConsumerLab.com
November 18, 2020

Thank you for your suggestion. We've added information about the Idylis 3-Speed 310-sq ft HEPA Air Purifier in the answer above.

Jeffrey21275
November 4, 2020

Will you review Hatha Space Medical Grade portable room air purifier?
Thanks

Cindy21269
November 2, 2020

Have you looked at the SilverOnyx air purifier? I'm using 3 of them in my store, and they seem to work very well against mold, etc. Price is good, and each purifier covers about 500 SF. Very easy to use, clean, and replace filters (I try to clean the filter cartridge monthly and replace them yearly.

Donald 21217
October 25, 2020

Have tried two of the Blue Air filters. They both gave off very offensive odors that the company said was from glue used to hold the filter together. I returned both. I did not see any comments about odor on the CL evaluation of this unit, but there are many similar complaints on many other websites to include Amazon.These are made in China. I replaced them with the Austin Healthmate. There is no odor at all and they are doing a great job. They are constructed on parts made in the USA and are manufactured in the USA. I believe USA made is probably a better choice during this time and maybe our USA made are better all of the time. I have no financial interest in either of these companies. I just want clean air in my home without any possibility of toxic contamination.

Robert21155
October 14, 2020

I purchased several Winex air filters of the model you reviewed at Costco for $99 ($30 off of their regular price). I notice they are out of stock today but this seldom lasts long. I am pleased with these filters. They are quiet, efficient, and the replacement filters last much longer than I expected.

John21142
October 12, 2020

Can you review the NUWave Oxypure that is heavily advertised on TV ?

ConsumerLab.com
October 19, 2020

Thank you for your suggestion. We've added information about the Nuwave OxyPure Smart Air Purifier in our answer above.

Patricia21124
October 11, 2020

What is your opinion on the Austin Air Filters?

ConsumerLab.com
October 12, 2020

Thank you for your question. We discuss the Austin Air HealthMate - Austin Air Systems' original and most popular device - in our answer above.

randy21119
October 11, 2020

Can you review the Amway Sky Atmosphere Air Purifier?

ConsumerLab.com
October 19, 2020

Thank you for your suggestion. We've added information about the Amway Atmosphere Sky Air Treatment System in our answer above.

Vince21115
October 11, 2020

What are your thoughts on the VEVA 8000 Elite Pro Series Air Purifier?

ConsumerLab.com
October 19, 2020

Thank you for your suggestion. We've added information about the VEVA 8000 Elite Pro Series Air Purifier in our answer above.

Jennifer21100
October 7, 2020

How can I clean an air purifier's filter without exposing myself to the virus particles caught in the filter? thanks.

ConsumerLab.com
October 12, 2020

Great question! We have added a section about cleaning portable air purifiers in our answer above.

Julie21099
October 7, 2020

Hi Can you research this please?
I have had a Rowenta Intense Pure Air filter for 5 years. Nano captur technology. It has a pre filter, an active carbon filter, a true hepa filter and a nanocaptur filter. I order filters from Amazon.

ConsumerLab.com
October 12, 2020

Thank you for your suggestion. We've added information about the Rowenta Intense Pure Air XL in our answer above.

Steven21093
October 5, 2020

I'd like to see a review of Aireox. The owner built this machine because his wife has MCS as do I. I find it gets rid of chemical odors very well, not sure about dust

ConsumerLab.com
October 19, 2020

Thank you for your suggestion. We've added information about the Aireox Air Purifier Model 45D in our answer above.

Dan21090
October 5, 2020

Do you have plans to test Air Oasis?

ConsumerLab.com
October 12, 2020

Thank you for your suggestion. We've added information about the Air Oasis iAdaptAir (M) HEPA Air Purifier in our answer above.

Sandy21048
September 30, 2020

I have Austin Air machines for over 15 years. They are pricey up front, but made of steel, not plastic, so no off-gassing. Their filters last years. Curious why they aren't mentioned here? During CA fires 2 years ago, someone left open the kitchen window over night while at Lake Tahoe. I came downstairs and it was like the fire was in the house. I closed the window, ran the machine for an hour, came back downstairs and no smell. They do not have all the bells and whistles, and are slightly loud even on the lowest mode, but IMHO do a great job. I have no financial interest in this company.

ConsumerLab.com
October 19, 2020

Thank you for sharing your experience. We've added our recommendation for the Austin Air HealthMate - Austin Air Systems' original and most popular device - in our answer above.

Elizabeth21046
September 30, 2020

I just bought the BlueAir 211 and like it, though it's hard to move. No handle, you have to lift from bottom. It has removed smoke from wildfires here in Colorado. AND I would recommend the Honeywell. I have an old Honeywell 20 years now and still working great. I would of bought another Honeywell but it's unavailable and thought I would try the BlueAir. Thanks for these reviews.

Charlotte21011
September 28, 2020

What do you think about Winix C535 and similar models?

Also wondering if there is anything cost effective for a bathroom.

ConsumerLab.com
October 1, 2020

Thank you for your suggestion. We've added information about the Winix C535 in our answer above. Regarding your question about air purifiers for a bathroom, many are not suitable for use in a bathroom due to the humidity. However, one of the best ways to achieve air movement in a bathroom is to just leave the vent fan running. In fact, the EPA recommends doing this to increase ventilation with outside air: https://www.epa.gov/coronavirus/indoor-air-homes-and-coronavirus-covid-19.

Heather 21004
September 27, 2020

Thank you for this article. As a psychologist who sees some clients in office, I am very interested in this kind of data. A purifier that a lot of my colleagues use and recommend is the Air Doctor. I have ordered two but they gave not arrived yet. I do not know its actual efficacy in practice and I'd be curious how it would fare in a review like this. Disclaimer as per your guidelines: I do not have any financial investment in the Air Doctor.

ConsumerLab.com
September 30, 2020

Thank you for your suggestion. We've added information about the Air Doctor in our answer above.

Alex20994
September 27, 2020

A local health practitioner uses the Medify MA-25 W1 air filter. Is that a recommended air filter for consumers? Also, is the HoMedics TotalClean 4-in-1 air purifier recommended?

ConsumerLab.com
October 1, 2020

Thank you for your questions. We've added information about the Medify Air MA-25 Air Purifier and the HoMedics TotalClean 4-in-1 Small Room Air Purifier in our answer above.

JOHN20992
September 27, 2020

We have Winix and Theropure air purifiers. Have you ever evaluated those brands. We'd like to know before we purchase another, of either one. Thanks.

ConsumerLab.com
October 1, 2020

Thank you for your interest. We've added information about the Winix C535 Air Cleaner and the Therapure TPP240 Air Purifier in our answer above.

Jessica20990
September 27, 2020

What do you think about the : Coway AP-1512HH Mighty Air Purifier with True HEPA and Eco Mode

ConsumerLab.com
October 1, 2020

Thank you for your suggestion. We've added information about the Coway AP-1512HH Mighty Air Purifier in our answer above.

Betty20966
September 23, 2020

After the horrendous smoke of the past week we are considering a whole house air purifier that is connected to our heating/cooling system. Would love a review of these options. As we all evolve to deal with climate change, these will become more of a standard feature of most homes, I imagine.

ConsumerLab.com
September 28, 2020

Thank you for your comment. Our focus is currently on single-room air cleaners, but some of the same issues regarding types of filtering apply to whole house air purifiers (HVAC systems) as well.

charles21130
October 11, 2020

Nice article! So, you mention the life expectancy of various Hepa filters. What is that life based on? Constant or regular use? If the device sits unused for long periods, would the filter not have a much longer life expectancy? Thanks

ConsumerLab.com
October 12, 2020

The life expectancy of a HEPA filter is typically based on regular use (about 10 to 12 hours per day) rather than constant use (24 hours per day). If a device is being used all day, the filter may need to be changed more often. If it is used less often, the filter may last slightly longer. Of course, other factors can affect filter life. Households that include pets, young children, or people with allergies/asthma may need to change the air filter more often. On the other hand, regularly cleaning the pre-filter can help extend the life of the HEPA filter.

Marlene21304
November 8, 2020

Would you please evaluate the Whisper Quiet by Aeros. It is sold by Allergy Buyer's Club

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