The best air purifiers can filter out many of the most dangerous particles in your home, whether you suffer from allergies, have pets who shed hair and dander, live with a smoker or simply want to breathe better.
Air purifiers may even offer some protection against the COVID-19 coronavirus, Consumer Reports recently found.
- Buying an air purifier? Here's what you need to know
- 5 reasons you need an air purifier
- How do air purifiers work?
While no device can completely eliminate air pollutants or substitute for clean outdoor air, the best air purifiers can improve respiratory health, according to the EPA.
That's especially true if you suffer from asthma or chronic allergies. Air purifiers with HEPA filters, or "HEPA-like" filters, will trap most airborne particles, including pet dander and pollen.
Airborne droplets expelled from the mouth or nose of someone infected with COVID-19 would also be trapped, although the rate at which the air is cleaned depends on the specific model.
Some air purifiers have pre-filters to trap larger pet hairs before they get to the main filter. Others use electrostatic attraction to trap very small particles or ultraviolet lights to kill bacteria and mold. And some use charcoal or carbon filters to trap petroleum-based gases.
What are the best air purifiers?
Based on our research, which considered 30-plus brands and dozens of customer and expert reviews, we've identified the top air purifiers for your home or office.
Our top pick is the Coway AP-1512 HH Mighty, a quiet model with a HEPA filter, prefilter, ionizer and odor filter. With its strong performance for the price (including the cost of replacement filters), this is the best purifier for most people.
The best-looking air purifier is the Blueair Blue Pure 211+, which comes in five colors including yellow, blue and pink. It's powerful but a bit loud. It doesn't have a HEPA filter, but Blueair insists its filters are even better. (Consumer Reports said this is one of the best at cleaning a room of COVID-19 droplets.)
For tight budgets, we recommend the Levoit LV-H132 or the Blueair Blue Pure 411. Either will do nicely in your bedroom.
Parents of young children will like the PureZone 3-in-1 True HEPA Air Purifier, which is small, quiet and perfect for kids' bedrooms. It can also be put on a timer to shut itself off while the little ones slumber.
If you don't like changing filters, try the Austin Air HealthMate HM-400; its filters last up to 5 years. It also filters out the volatile organic compounds (VOCs) you'll get from paints, plastics and petroleum products.
Finally, if money is no object and clean air is critical to your health needs, the IQAir HealthPro Plus or the Coway Airmega 400 may fit the bill. Both are equipped to handle rooms of 1,000 square feet or more.
The best air purifiers compared
|List Price||Room size||Filter||CADR (cfm)||Noise level|
|Coway AP-1512 HH Mighty||$230||361 sq. ft||True HEPA||233/246/240||24.4-53.8 dB|
|Blueair Blue Pure 211+||$300||540 sq. ft.||HEPASilent||350||31-56 dB|
|Blueair Blue Pure 411||$120||161 sq. ft.||HEPASilent||105/120/120||17-46 dB|
|Coway Airmega 400||$650||1,560 sq. ft.||True HEPA||350||22-52 dB|
|Austin Air HealthMate HM-400||$595||938 sq. ft.||True HEPA||Unavailable||39.8 dB - 64.5 dB|
|Honeywell HPA300||$250||465 sq. ft.||True HEPA||300/320/300||Unavailable|
|Levoit LV-H132||$90||129 sq. ft.||True HEPA||110||Up to 50 dB|
|PureZone 3-in-1 True HEPA Air Purifier||$100||200 sq. ft.||True HEPA||80||30-50 dB|
|IQAir HealthPro Plus||$900||1,125 sq. ft.||HyperHEPA||Unavailable||35-69 dB|
The best air purifier you can buy today
The Coway AP-1512 HH Mighty is consistently listed among the top-ranked and highest-regarded air purifiers on the market — and with good reason.
It's reasonably priced for how well it works, it's one of the quieter machines of its size, and it has most of the features we'd want in an air purifier, including a programmable timer, several fan speeds and a filter indicator light.
Replacement filters are fairly cheap and energy costs relatively low, which makes the Coway one of the least expensive air purifiers of its caliber to maintain year to year.
Finally, the Coway AP-1512 HH Mighty is easy on the eyes. It comes in sleek black or white and is relatively compact compared with many other purifiers of similar performance, so it simply fades into a corner.
The Coway Mighty is one of the only purifiers we considered that has an ionizing function. The effectiveness and safety of ion filters is questionable (due to possible ozone production), but you can just turn this function off.
What consumers say
Amazon: "Love the colored air-quality indicator and the auto feature, so it kicks on when something is detected in the air, but is in standby the rest of the time (there are also several continuous settings). It's aesthetically pleasing as far as air purifiers go."
The Blue Pure 211+ is highly rated for its solid performance in removing dust, smoke and pollen from room air.
The Blueair's filters aren't true HEPA-certified, but they are still effective. They work by giving particles an electric charge, which causes those particles to stick to filter fibers.
The Blue 211+ pre-filter comes in five different colors, from eye-popping yellow to low-key gray, so you can customize the look for your space. The machine also has a filter indicator light to let you know when it's time to replace your main filter.
Possible downsides of the Blue Pure 211+ include more noise on lower speeds compared with similar machines, and relatively high purchase and maintenance costs. For example, it draws more power than the Coway on similar speeds (though it moves more air) and it is a bit louder and more expensive (both upfront and over time).
What consumers say
Lowe's: "After the fires in Northern California my whole household was coughing from ashfall, so we decided to give this a try. After 24 hours, we could feel a significant difference between being inside with the filter running and outside. And having left it running since then, we've noticed our usual fall allergies are less profound while in the living room where the filter lives."
The Blue Pure 411 is like the 211+'s much smaller sibling. It uses similar filtering technology and features and comes in a variety of colors.
Where the Blue Pure 411 stands out is in price and efficiency. The purifier is inexpensive to buy (just over $100) and maintain (around $20 annually for replacement filters), and it uses significantly less energy than most other air purifiers we researched. The machine is also small, compact and quiet, making it a great choice for your bedroom.
The one thing to keep in mind is that if you plan to move your purifier from room to room, the Blue Pure 411 won't be very effective in larger spaces.
What reviewers say
Home Depot: "Great air purifier with a simple design. I use this on one side of my main house level and love it. It is small, quiet and essentially has three filters which take an array of 'contaminates' out of the air. It is also light and easy to move around. It provides great air quality for a good price."
Coway's Airmega 400 is a high-performing air purifier at a high price, but reviewers generally agree that the trade-off is worthwhile. The Airmega 400 has a dual carbon + true HEPA filter, which allows it to clean the air in a large space over a short period more effectively than other machines.
Coway claims the Airmega 400 is good for filtering rooms of up to 1,560 square feet, but you'll likely get better performance in rooms that are half that size. If you put the purifier in a space up to the maximum recommended size, it'll do two or fewer air changes per hour.
The Airmega 400 is large but sleek, and it has convenient features like a programmable timer and a display shut-off to minimize disruption during sleep. There's also a "smart" version (the Airmega 400S) that you can integrate with an Alexa device or a mobile app.
What consumers say
Allergy Buyers Club: "Does a great job of keeping a pet haired open-concept family room/kitchen/dining room relatively dander free. Did my first pre-filter cleaning last week and it captured quite a bit of stuff...Much easier to breath and you can see the changes in air quality based on the front panel LED display."
The Austin Air Healthmate HM-400's main selling point is its high-performing and long-lasting filters, which handle everything from mold and pet dander to gas and chemical contaminants.
It isn't CADR-tested, but it gets high marks from reviewers for filtering volatile organic compounds (VOCs) that come from household products such as paints, pesticides and air fresheners better than most other machines on the market.
In addition to being effective, Healthmate HM-400 filters last for up to five years. You can vacuum or clean the pre-filter periodically in that time as well.
Criticisms of the Healthmate HM-400 include a fairly time-consuming filter-replacement process as well as noisy medium and high fan speeds. The unit also doesn't have some basic features (such as a programmable timer or filter indicator light) that you'd expect even at a lower price, and it's fairly power-hungry.
While the Healthmate HM-400 is pricey, it's a good option if you have particular concerns about chemicals and odors.
What consumers say
Allergy Buyers Club: "Even though I have only used it for a short time, it has taken out the natural-gas smell that has permeated my apartment. It has also helped tremendously with my allergies."
Honeywell air purifiers get decent reviews across the board, and the HPA300 is a good unit for a fairly reasonable price.
It has among the highest CADR ratings for smoke, dust and pollen of the units we recommend, and it can filter slightly larger rooms effectively. It also has four speeds (compared with three on most units), a programmable timer and adjustable control panel lights.
The HPA300 is also portable, so you can move it easily between rooms. The HPA300 is also quieter at higher speeds than some other units.
Where the Honeywell HPA300 could fall short is in its filter-replacement and maintenance requirements. Both the true HEPA filter and pre-filter are disposable and must be replaced every six to 12 months.The HEPA filter is actually three filters that reviewers said can be tricky to get in the exact right spot.
What consumers say
Best Buy: "It's still more expensive than most of the competition, but you get top-of-the-line results without spending almost a grand in cash. Our whole home smells noticeably better all the time."
The Levoit LV-H132 is an Amazon best-seller and the most budget-friendly purifier on our list. Reviewers said it does a decent job for the price, especially with pet odors. It's also a sleek machine that's lightweight, compact and portable, so you can easily move it around your home.
At this price, you can't expect bells and whistles — and the Levoit LV-H132 doesn't have any. There is no programmable timer, and the device's filter indicator light reminds you to check your filters but does not tell you when it's time to actually replace them.
You have to toss all three filters every six months to a year, as the pre-filter isn't washable. But two replacement sets will cost you just $30.
Reviewers report that the Levoit LV-H132 is fairly loud on higher settings, so sensitive sleepers may struggle to use this unit in their bedrooms. The buttons are also reportedly finicky — they may stick, freeze, or quit working altogether.
If you're looking for an inexpensive air purifier — or want several machines to cover multiple bedrooms in your home — the Levoit LV-H132 is a decent unit to start with. Truthfully, though, it's probably worth it to spend a bit more for a better device (like the Blue Pure 411) than to compromise with the Levoit.
What consumers say
Amazon: "We also have hardwood floors, so the dust, dander, and pet hair get kicked up very easily. This air purifier has made a world of difference!"
The PureZone 3-in-1 True HEPA Air Purifier is another popular (and budget-friendly) model among customers. It's small, sleek and unobtrusive, which makes it a good choice for those who care about aesthetics and decent performance.
What sets the PureZone 3-in-1 apart is its quiet operation. It's soft on lower settings and has an automatic timer that can shut the device off while you sleep. This makes it a good option for bedrooms and babies' rooms where noise and light disruption matter. The device comes with a five-year warranty, longer than other machines at similar prices.
The PureZone 3-in-1 has one of the lowest CADR ratings of the devices on this list (80 cfm) and reportedly has a weak fan that limits it to small spaces, but reviewers say that it's effective at filtering most common air particles.
What consumers say
Amazon: "Very attractive and functional piece of hardware. You can tell this is a quality piece right out of the box just by the decent weight of the product. It is not cheaply made. Got that luxury look to it; with touch-sensitive buttons, smooth top grill, and white all-around finish."
Home Depot: "I bought it for my baby niece for her nursery...We turn it on before she goes to bed on a higher setting and then when she is ready for bed we just touch the SLEEP button and it lowers down to a quieter level, turns off the ultraviolet light, sets the automatic timer to shut itself off after 8 hours and turns off the outside blue lights on the buttons."
Let's state the obvious: the IQAir HealthPro Plus is expensive. At around $900, it's more than twice the price of many other picks on our list.
But if you're serious about air purification, this machine is well worth your consideration. It uses HyperHEPA filters, which reportedly retain particles at a rate 100 times higher than standard HEPA filters, as well as a secondary filter for odors and gases.
The IQAir HealthPro Plus also covers a huge area (1,125 square feet) at two air changes per hour, and can do six per hour in a smaller room. Plus, it has six speeds, programming options, filter indicators and a remote control.
This purifier is a top seller and highly rated by experts at Allergy Buyers Club, especially for those who have allergies or other special health concerns that are affected by air quality. While it isn't CADR-rated, IQAir tests every unit individually and offers a 10-year warranty, double the time of any other device we recommend.
While the IQAir HealthPro Plus is larger, louder and pricier than most air purifiers, reviewers say it may provide the relief those with asthma, allergies and respiratory challenges seek.
What consumers say
Sylvane: "I didn't expect to feel the difference between purified/non-purified air that soon. But I did, it eliminates cat hair, floating dust significantly, and the fresh air smells like I am living in a nanotechnology lab instead of a crowdy apartment room. The truth is that our baby won't be quiet if we turn it off, and she sleeps comfortably in such fresh air."
How to choose the best air purifier for you
There are dozens of air purifiers on the market, and it can be difficult to sort out which one is the best air purifier for your home size, health concerns and price. Here are a few factors to consider.
Air purifier CADR ratings
Most air purifiers have a clean air delivery rate (CADR) number that helps consumers understand how effective the device is in a certain room size. The higher the number, the more particles the purifier can remove, and the larger the space it can clean.
The numbers represent how many cubic feet per minute an air purifier can clean. The goal is to have all the air in a room cleaned in about 15 minutes, so a 300-square-foot room would need an air purifier with a CADR of about 200, assuming the ceilings were 10 feet high and the doors were kept closed.
Some devices have different CADR ratings for smoke (the smallest particle), dust and pollen (the largest particle).
Here are the minimum CADR ratings the Environmental Protection Agency recommends by room size:
|Area (sq. ft.)||100||200||300||400||500||600|
|Minimum CADR (cfm)||65||130||195||260||325||390|
Not every purifier is tested using the CADR rating system, but real-life reviews can give you a sense of a device's effectiveness if a rating isn't available.
Air purifier filter types
In general, you'll want to look for a purifier that uses a true high-efficiency particulate air (HEPA) filter.
Government agencies and professional groups, including the EPA and the American Lung Association, recommend True HEPA filters as the standard for air purification. These filters trap 99.97% of particles that are at least 0.3 microns in size.
Some devices have HEPA-type filters, which work similarly but aren't held to the same performance standards. The IQAir HealthPro Plus uses a HyperHEPA filter, which is believed to capture even smaller particles than a True HEPA filter.
Your purifier will likely also come with a pre-filter (some you can clean, some you have to toss after a few months) that catches the big stuff like pet fur and human hair before it reaches the main filter.
Some devices have additional filters, like carbon or charcoal filters, that trap the petroleum-based gases known as volatile organic compounds (VOCs).
Air purifier noise levels
Air-purifier noise levels range from nearly silent to steady humming, like an AC unit. Depending on the fan speed you're using and where you're placing your purifier, you may prefer a quieter device.
Air purifier added costs
The purchase price of your air purifier is one thing. Ongoing filter replacement and energy costs are another. For example, some machines have filters that last for years but are expensive to replace, while others work with filters that are cheap to purchase but have to be changed frequently.
You'll also want to consider the cost of electricity. Some of the best air purifiers we recommend are ENERGY STAR certified, but each pulls varying amounts of power on different fan speeds.
Devices for larger rooms and with higher speeds tend to use more electricity. although this isn't a hard-and-fast rule. Some devices also have eco modes. The Blue Pure 411 requires the least energy, but it covers only a small room.
Air purifier extra features
Some features are more nice-to-have extras than absolute requirements. In general, pricier purifiers come with more features, such as filter indicator lights, dimmable lights and programmable timers.
Only one of the devices we recommend (the IQAir HealthPro Plus) comes with a remote control, but we're not convinced that this adds a lot of value to the machine.
How we picked the best air purifiers
To make our short list of air purifiers for consideration, we looked at top picks from Wirecutter, Consumer Reports, Allergy Buyers Club and others, and also noted the top-selling and most highly reviewed models on Amazon, Home Depot and Best Buy. We narrowed down our list to nine models based on features, price and other factors, including clean air delivery rate (CADR) ratings and noise levels.