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, and filters for removing VOCs.

The air purifiers that we review are: AirDoctor 3000 Professional Air Purifier, Aireox Air Purifier Model 45D, Air Oasis iAdaptAir (M) HEPA Air Purifier, Alen BreatheSmart FLEX Air Purifier, Amway Atmosphere Sky Air Treatment System, Austin Air HealthMate HM400, Blueair Blue Classic 605 Air Purifier, Blueair Blue Pure 211+ Air Purifier, Blueair Blue Pure 411 Air Purifier, Coway AP-1512HH Mighty Air Purifier, Dyson TP04 Pure Cool Air Purifying Fan, GermGuardian AC5250PT 5-in-1 Pet Pure Air Purifier, GermGuardian True HEPA Filter Air Purifier AC4200W, HoMedics TotalClean 4-in-1 Small Room Air Purifier, Honeywell True HEPA 50250, 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, Rabbit Air BioGS 2.0 SPA-625A Ultra Quiet Air Purifier, Rowenta Intense Pure Air XL, Therapure TPP240 Air Purifier, VEVA 8000 Elite Pro Series Air Purifier, Vollara Air & Surface Pro, and Winix C535 Air Cleaner.

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17 Comments

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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.

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