An air purifier that filters airborne pollutants from inside your domicile can exist a godsend for people who suffer from seasonal allergies. The best air purifier tin can remove virus particles, improve air quality, eliminate pet odors and minimize the negative furnishings of wildfire smoke and air pollution indoors — which, in today’s world, makes it highly-seasoned for more than allergies.

But with countless machines on the market touting various methods of purification, information technology tin can be challenging to find the all-time air purifier for your needs. Are you lot looking to invest in an ionic air purifier or a full home filtration organization? Do you want a purifier with an activated carbon filter? I’m here to answer those questions and assist you sort through the best air purifier options.

I’ve researched the products, interviewed experts in the field of indoor air quality and air purification, and tested the features of 15 of the most popular models. I took into consideration factors like whether each air purifier has an air quality monitor or clean air delivery rate, forth with how frequently you need to supplant the filter, whether information technology’s a washable filter and how much a replacement filter costs. These are our meridian picks for all-time air purifier options based on our research. Any one of the air purifiers below should improve your indoor air quality, filter out smoke and airborne particles and provide fresh air.

Best for large rooms

Blueair Blue Pure 211 Plus

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Blueair’s excellent big-room air cleaner looks great, runs adequately quietly and — nigh importantly — cleans big rooms efficiently. The Bluish Pure 211 Plus weighs thirteen pounds and has a simple interface: The touch on-sensitive push on the front of the device lets you set it to low, medium, high or off. That’s it.

While information technology would be overnice if it had a few more smarts, like an automatic setting that responds to air quality, Blueair has invested where it matters: the cleaning technology. The True HEPA filter is certified to clean the air in spaces up to 560 foursquare feet, and the activated carbon filter & particle filter helps remove airborne pollutants. That much power at this price is pretty impressive.

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All-time for midsize rooms

Honeywell Home HPA300

David Priest/CNET

Honeywell’s air purifier is a little more than expensive than other HEPA models, but it tin embrace a larger space than almost whatever other purifier I tested: 465 square feet. Despite its clunky design (this thing weighs a hefty 21 pounds), the Honeywell Habitation is really one of the quieter models around.

The Honeywell Dwelling’s aesthetic isn’t my favorite, but you get adept control for setting timers and checking whether the prefilter or filter needs replacing. If you’re looking for neat basic operation for a reasonable price, yous tin’t beat this Honeywell HPA300.

The other best air purifier for midsize rooms

Coway AP1512HH HEPA Air Purifier

David Priest/CNET

Afterward months of employ in my ain abode, Coway’s HEPA air purifier cemented itself as my favorite available HEPA air cleaner. Prices for these devices have fluctuated over the past year, only the listing toll is solid for the 361-square-foot coverage it offers. In addition to its coverage, the Coway’s ion filtration engineering that removes pet dander, dust and other allergen particles sets it autonomously from many other purifiers in the cost range. The Coway’s hit, retro pattern was also one of my favorites among the devices I tested.

Personally, while using this air purifier brand, I’ve experienced fewer allergy symptoms during typically difficult seasons for me. A colleague’south mother also recently bought a Coway for smoke in her home during the West Declension wildfires, and she noticed an immediate improvement in the air quality.

While the ionic filtration technology isn’t a huge plus, information technology as well won’t produce significant ozone, equally tested past the California EPA. If you want an air purifier for a midsize room, Coway’s HEPA air purifier is ane of the best air purification options around with one of the most adventurous looks.

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Best for pocket-sized rooms

Blueair Blue Pure 411

David Priest/CNET

The Blueair Blueish Pure 411 is a unproblematic, straightforward purifier with smart design and solid bang for your buck. Yous get particle and carbon filtration (the activated carbon filter removes odors, pet dander, airborne allergens and gaseous airborne pollutants) that will work well in a 160-square-foot room, all for $120. Some devices, like Sharp’s Air Purifier, don’t even offer that much cleaning power at nearly twice the price.

The Blue Pure has different colored prefilter sleeves for the outside of the device, then it will fit into well-nigh any color palette, and its single-button interface is every bit intuitive as it gets. The device is likewise light, with middle-of-the-road dissonance production. Also the noise, the simply existent downside of the Blue Pure is the lack of extra goodies, like timer buttons.

Best for whole homes overall

Coway Airmega 400

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OK, if yous’ve got the money and desire a super powerful air purifier — or if y’all’d rather go i purifier to cover your whole business firm than get one for each room — Coway’s Airmega 400 might be for you. This thing costs a pretty penny at $649, but you become air cleaning coverage of 1,560 square feet.

The Airmega comes with a lot of perks: Yous get a existent-fourth dimension air quality indicator, a diverseness of fan speed settings (the highest of which is surprisingly quiet), smart settings that adapt fan speed according to air quality and a range of timers. It’south also larger than many competitors, weighing well-nigh 25 pounds.

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Most homes are going to be meliorate served with one or ii smaller Coway or Honeywell air purifiers, but if y’all have a specific demand for a
of coverage, the Airmega might be the correct call for you.

How exercise air purifiers work?

Earlier you make a purchase, information technology’southward of import to empathise
the basic mechanisms that air purifiers utilize to make clean your air. To get a handle on these methods, I talked to Richard Shaughnessy, manager of Indoor Air Inquiry at the University of Tulsa.

According to Shaughnessy, who has a doctorate in chemical engineering, most air cleaners run your air through a filter designed to take hold of indoor air pollutants like grit particles and dust mites you lot might otherwise inhale. These are usually Loftier Efficiency Particulate Absorbing filters and they’re designed to capture 99.97% of airborne particles sized 0.3 micron or larger. A HEPA filter reliably removes indoor air pollution such assmoke (including cigarette smoke and smoke from wildfires), pollen, spores, grit mites and other particulate matter that pollutes domicile environments.

Activated carbon offers another type of filter, which captures odors like pet scent, volatile organic compounds and gaseous pollutants that can slip through a HEPA filter. “[A carbon filter is] adept … to an extent,” said Shaughnessy, “merely they need to take a sufficient amount of carbon. You don’t want breakthrough happening, where the carbon becomes fully saturated and it releases what was captured back into the air.”

According to multiple researchers I talked to, near consumer air purifiers only don’t have plenty activated carbon to be an effective odor filter for more than a brusk period of time.

Read more than:Will air purifiers protect you from COVID-nineteen, wildfire smoke and pollen?


Dyson’s $550 air purifier doesn’t offer a CADR rating at all

David Priest/CNET

Another common type of air cleaning works via ionic filtering. These filters tin can exist effective, co-ordinate to Shaughnessy, but ionic purifier models have a number of shortcomings: Some don’t actually remove air pollutant particulates from the home, but rather cause them to attach themselves to surfaces effectually the home. Others must be cleaned consistently, or they might begin to emit ozone — itself a pollutant.

While some ionic purifiers are effective and standards for them have risen significantly in recent years, the benefits an ionic purifier offers over a HEPA filter are in many cases negligible, particularly given the risk an ionizer occasionally poses.

An important standard to keep an eye out for is the AHAM Verified Make clean Air Delivery Rate, which tells you how much air a purifier can process in a given time frame. Not every company uses this standard, but most do.

Recommendations get a little more complicated when companies don’t list a CADR, or when they employ proprietary air filtration methods.

Some major players, like Dyson and Molekule, offer their ain standards. That doesn’t necessarily mean that their devices are junior, but rather that they require actress scrutiny. In these cases, I looked at the explanations presented by the companies themselves and talked to tertiary-party specialists. More often than not, such devices — even if they do accomplish what they merits — still end upwards overpriced compared with competing products with more readily attainable testify backing up their claims. (I expect more closely at both of these brands later in this article.)

It’southward too important to note that many of the home air purifier models I tested take been going in and out of stock in contempo months, given the demand for such devices during the pandemic and among wildfires. While that might mean some of the options below are out of stock, nosotros’ve decided to proceed our recommendations — and the rationales behind them — posted, so y’all can apply them to observe the all-time production for yous. For now, though, our recommendations are based on the included prices, and we would recommend avoiding sellers offering the same devices for significantly different toll tags. We’ll update this list periodically as nosotros review new products.

For the devices below, I primarily considered the power for the price (that is, the college the CADR and the lower the toll, the amend). Secondarily, I looked at additional cleaning modes, the helpfulness of controls, the general design and the racket level. The perfect air cleaner looks sleek enough to fit into most modern decor, tin operate as desired with minimal fiddling and can thoroughly and quietly clean your air.

The residual of the field

The above recommended air purifiers are only five of the 15 devices I tested. Other HEPA cleaners, like the $95Levoit Core 300, the $159Winix 5500-2, the $220Winix AM90, the $85Bissell
and the $93GermGuardian
all offer simply so-so ability for their prices. All five of those models offer a carbon filter or charcoal filters for removing airborne contaminants like odors, pet dander and gaseous pollutants, just the filters in all of them contain only a few ounces of the medium, meaning they won’t concluding long with regular use. Filter replacement timing will vary.

The IQAir HealthPro Plus wasn’t among the devices I tested, in part because I was looking at more affordable options. Just IQAir’due south $900 air cleaner is one of the few devices on the market to contain multiple kilograms of activated carbon, which will filter out odors and gaseous pollutants much more effectively than virtually consumer air cleaners nether $one,000, co-ordinate to specialists I talked to.


The Holmes air purifier is a cheap option for your desktop.

David Priest/CNET

Two devices I tested featured an ionic filter: theCoway AP-1512HH
I mentioned above and the $175Sharp FPK50UW. The Sharp’s CADR rating is just 259 foursquare feet, which is significantly lower than the Coway’south and non keen for the price.

($64) and
($40) air purifiers were the well-nigh affordable devices I tested and they both provide a true HEPA filter option for small rooms. If you are looking for a portable air purifier, I could see them being used on a desk in an office, for example, to slap-up event. Merely both felt a little inexpensive and neither gave an official CADR, so I would recommend saving up for something a little more reliable if air purification is a high priority.

What about Molekule and Dyson?

You may have heard of another air purifier called Molekule, fabricated by a visitor of the same name, which grabbed headlines for its bonny design and proprietary filtration engineering science back in 2017 — and is even, strangely plenty, sold at the Museum of Modern Art in New York. What about that?

The Molekule presents a complicated problem: Its maker claims its proprietary PECO air filter destroys airborne particles much smaller than 0.03 micrometer, but it filters air at such a ho-hum rate that, even if the company’southward claims are accurate, it cleans the air very inefficiently compared with HEPA air purification models (equally Consumer Reports rightly pointed out in its highly critical 2019 review).


Molekule was recently forced by the National Advertising Board of Review to retract misleading claims it made in its advertisements.

David Priest/CNET

On the other hand, the Lawrence Berkeley National Laboratory, one of the premier indoor air enquiry centers in the country, released a regime-funded report showing that the PECO effectively filters out volatile organic compounds — that is, compounds that can easily get gaseous pollutants in the air — that a HEPA filter does not capture. Reviewers at Consumer Reports and the New York Times’ Wirecutter, which called the Molekule’s larger model “the worst air purifier we’ve ever tested” and the Air Mini “the second-worst,” didn’t appear to test VOC reduction.

We can’t recommend the Molekule Air Mini Plus, which I tested, equally a result of these problems coupled with a 2020 decision by the National Advertising Review Board to force a retraction of many of Molekule’s misleading advertising claims. That said, the air purifierdoes appear to address a problem that virtually HEPA filtration cleaners simply don’t: the presence of gaseous pollutants in the home. Such pollutants have plenty of sources, whether from paint, furniture, cleaning solutions or even some composite boards. For that reason alone, Molekule’s eye-catching brand is worth keeping tabs on — especially as its latest air cleaner was approved by the FDA as aClass II medical device.

Dyson’south devices offer a similar but slightly dissimilar problem. Some of its air purifiers, such every bit theDyson Pure Cool TP04, which I tested, use a HEPA filter, but provide no CADR. A Dyson spokesperson told me, “CADR as measured by some electric current methods is not an accurate representation of a real domicile,” and thus the visitor has developed its own testing procedures “to replicate a more realistic setting.” That includes a testing room that has over double the footprint of AHAM’s testing rooms, along with nine sensors placed around the space (versus AHAM’s single sensor). The Dyson TP04, perhaps unsurprisingly, performs well according to Dyson’s own metrics.

In addition, the Dyson TP04 air purifier features a handful of extra goodies, including an oscillating fan to help circulate clean air around larger rooms, an app with home air quality data and a small but peachy brandish. Our tower fan reviewerreally liked these features of the TP04. But is all that worth the toll bump from, say, Coway’s purifier?

For most people, the answer is likely no — especially considering that Dyson’s devices oasis’t stacked up especially well against the competition in 3rd-party testing, such as Wirecutter’southward, where the TP04’due south performance was in line with the far more than affordable Blueair 411.

Do you even need an air purifier?

GivenCOVID-19, wildfires and pollution, nosotros may be more aware of air quality today than ever earlier. But air purifiers aren’t necessarily a panacea for these problems. As mentioned earlier, in home settings, virus transmission usually occurs through close contact, which means an air purifier probably won’t protect you if a roommate or family unit fellow member in the same business firm gets ill. That said, purifiers may help businesses and restaurants trying to amend the air in their indoor spaces.

For households with an asthmatic or otherwise immunocompromised kid, air purifiers have pregnant benefits, co-ordinate to Dr. Elizabeth Matsui, a professor of population health and pediatrics at the University of Texas, Austin’southward Dell Medical School.

Matsui has extensively researched the furnishings of air purifiers on children with asthma and says the devices can brand a big deviation — though they’re no substitute for well-ventilated and smoke-gratis homes or proper medical care. Furthermore, there is no prove to suggest that air purifiers diminish the chance of childrendeveloping asthma.

In short, air purifiers are pop for a reason: They by and large practise what they say, cleaning the air inside your dwelling house. And depending on your wellness needs, or if you lot live in a home with many sources of air pollution, cleaner air and better air flow might actually brand a large difference for you or your children. If yous think the benefits of an air purifier might assistance someone in your own dwelling house, it’s always worth talking to an allergist. If yous’d rather only catch an air cleaner and call it a twenty-four hour period, you tin can’t go incorrect with the recommendations above.

Nonetheless have more questions near air purifiers and whether you’re set up to buy one? Check out ourfull air purifier FAQ for more info.

Air purifier FAQs

Here are the answers to more common questions about air purifiers. If you take whatsoever others, feel complimentary to reach out on Twitter (@david_p_priest) or you can email me from my writer page (click the little orange envelope).

Are air purifiers good for Covid?

The short respond is yes. HEPA air purifiers capture virus particles, removing them from the air. But don’t count on air purifiers to protect you from virus particles if you’re cohabitating with a contagious person. When I talked with Dr. Richard Shaughnessy, the manager of Indoor Air Inquiry Academy of Tulsa, he said transmission of COVID ordinarily happens due to close contact with an infected person. If you’re sitting on a burrow and chatting with someone who is infected, an air purifier across the room isn’t going to remove all the harmful particles exhaled before they have a chance to reach you.

Are air purifiers a waste of coin?

Air purifiers mostly do what they say: they filter particulate out of the air finer — specially if they apply a HEPA filter. Just most of us already take a mechanism to filter the air finer: the respiratory organisation. As Dr. Alex Berezow, a microbiologist and vice president of Scientific Communications at the American Council on Science and Health, pointed out in a blog post, “Living inside the tiny air sacs in your lungs (called alveoli) are immune cells known as macrophages. These “big eaters” gobble upward bacteria, viruses, fungi, and whatever other debris happens to find its style into the lungs.”

In short, air purifiers work, just unless you live in a especially polluted surround or you or your children are immuno-compromised, you lot probably don’t need i.

Practice air purifiers increase or decrease oxygen in the room?

No, they don’t. Air purifiers generally employ fans to blow the air inside the room through an internal filter or sleeping room, which captures particles floating in the air. But this process does not bear upon the actual limerick of the air, adding or removing oxygen or other gases.

Where is the all-time identify to put an air purifier?

The best place to put an air purifier is in a room equal to or smaller than its CADR rating. If a device can purify the air effectively in a room equal to or smaller than 250 square feet, you lot shouldn’t put it in the main hub of a big house. Equally for locations inside those rooms, y’all’ll want to make sure the purifier’southward intake and output aren’t blocked by walls or furniture. That means out in the open, and ideally in locations where at that place is consistent airflow to help with cycling — which probably ways about doorways or vents.

Correction: A previous version of this article incorrectly described the Blueair 411’s features. The Blueair 411 has a “change filter” indicator and is AHAM-certified for a 161-square-foot room.

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