The best air purifier for 2026

As houses and apartments get more energy efficient, they also get more airtight, limiting air exchange with the outside world. That’s partly why indoor air is often far more polluted than outdoor air. Synthetic building materials, cleaning products, pet dander, cooking emissions and smoke all conspire to muck up what we breathe in. In our tests, the best way to get the green light from our air quality monitors was opening the windows. But bad weather, wildfires and high pollen-count days mean you can’t always do that. Air purifiers are your next best option. Their combination of specialized filters, fans and sensors suck in particulate matter, VOCs, dust and odors. We tested more than a dozen models to come up with the best air purifier for your home.

The Levoit Core 400S Smart Air Purifier isn’t trying to be anything fancy. It’s a simple white cylinder with holes for air intake and a black ring of vents on top. Touch controls in the center of the vents are easy to suss out, letting you adjust the fan speed, enable auto mode and turn on a sleep setting, which drops the fan to the lowest intensity and shuts off the display lights. The internal sensor measures particulate matter at 2.5 microns, which displays in the center of a lighted ring near the controls. The ring turns blue when all is well and moves through to green, orange and red as air quality levels deteriorate. In auto mode, when it detects a drop in air quality, the fan increases speed until levels go back down.

Even at its highest level, the fan isn’t terribly loud, peaking at around 62 in the Decibel Meter app and leaving my cat undisturbed on the couch nearby. Yet the force of the air coming out is strong and feels on par with output from purifiers that are quite noisy (which made the cat run away).

The Core 400S claims a half-hour air exchange rate for a 1,000-square-foot room and combines the three main filter types — pre-filter, activated carbon and HEPA — into a single ring. Perhaps the best part is a replacement filter is only $50, half the price of some competing brands. In multiple burn tests, the Core 400S reliably got the room back to its starting level in about a half hour of running on high. Auto mode does a good job of reacting to drops in quality, kicking on to a higher fan level nearly every time someone in the house cooks and after an incense burn.

This true HEPA air purifier connects to the VeSync app; setup is easy, but the app itself is overpacked. There’s a forum, a wellness tab and a shopping page where you can buy not just Levoit products, but also devices from sister brands Etekcity and others. But as far as controlling the Core 400S itself, the in-app controls are easy to use and nicely laid out.

Reliably improved the air quality in our tests
High speed is powerful, but not overly loud

This is the second air purifier from IQAir that I’ve tested. The first was a 35-pound, white monolith that looked like it belonged in a hospital. The performance was mid and the price tag was high; in other words, it didn’t wow me. Fortunately, the brand’s latest model is a dream — still a high-priced dream, but this time, more worth it.

The IQ Air Atem Earth is one of the nicest looking air purifiers I’ve seen. The exterior is made from slats of real, unvarnished beechwood and the redesigned filter has a frameless build to eliminate plastic from its construction (the machine still has plastic components, but the reduction is appreciated). The circular top is home to simple touch controls and a lighted ring that indicates the quality of the air, showing green for good, yellow for moderate and red for bad.

Getting the Atem Earth set up and connected to Wi-Fi took just a few steps, and relied on a QR code found on a conveniently attached tag. The IQAir app may already be familiar to anyone with an interest in air quality — thousands of contributors share data collected by their own outdoor monitors, which you can view in the Map tab. The app also lets you control the purifier with simple remote buttons, view the detected air quality and history, and set schedules for fan modes and times.

In my burn test, it cleaned up particulate matter quickly, getting levels to better than they were before I lit the incense. It also cleaned up the VOC levels fairly thoroughly, though it took an hour before those levels stabilized.

I lived with it in my living room for a week or two and was impressed by how quickly the Atem Air detected disturbances in air quality. When someone started cooking or lit incense in the other room, I’d hear the fan shift into higher gear. This often happened before either of my AQ monitors detected anything was amiss. I also appreciated how quickly it would drop back down to low after the smoke cleared (literally). Other purifiers I’ve tested stay in reactionary mode long after the danger has passed.

I used the purifier in Balanced auto mode (there’s also Quiet and Max modes) and mostly, I forgot it was there. The lowest fan setting is inaudible and even on high it’s not terribly noisy. Overall, it’s just a really pleasant machine — with the only caveat being its $999 price tag.

For that amount you do get a ten-year warranty and a 25-year repair guarantee. The plastic-free filter combines an odor-reducing carbon layer with AirIQ’s HyperHEPA technology that can capture more than 99.5 percent of particles down to 0.003 microns — for comparison, a true HEPA filter must remove airborne particles as small as 0.3 microns, so this one gets deeper into the nitty gritty (again, literally). The filters cost $100, but can last from three to four years based on 12 hours of usage per day, which is longer than most other filters. If you can handle the cost and want a reliably clean air filter, this is the one to get.

Attractive design relies heavier on wood than plastic
App is useful for air quality monitoring
10-year warranty and 25-year repair guarantee

A word of caution: If you get this, you may find yourself wondering why the HushJet has simply decided to turn itself off. When you hold your hand over the blue jets, you’ll find that it is indeed still on — it’s just gravely silent. So yes, Dyson’s latest air purifier is aptly named. Even on the highest setting, the HushJet is still quieter than most other purifiers I’ve tested, but the air coming out the top is forceful. But it’s not only quiet — it also does a good job keeping the air clean in small spaces.

Setup couldn’t be easier: just download the Dyson app, sign in and hold your phone to the display. You can give Dyson your location to get outdoor air quality comparisons in the Data and Insights tab. There’s a How To tab with videos on setup, replacing your filters and cleaning the machine. The app can also be used for a sleep timer and scheduling times and fan settings.

The onboard particle meter enables an auto mode that’ll kick in when pollutants are detected. I found it did a pretty good job of detecting smoke when I lit incense in an adjacent room. Throughout the week or so that I left it in auto mode, my AQ monitors stayed happily in the green, but when cooking smells or some other event dropped their levels, I noticed the purifier was almost always already on the job. As for the burn test, the HushJet performed well in cleaning up both particulate and VOC levels, though the built-in PM meter seemed to exaggerate the pollutant levels, indicating far higher numbers than either of my control monitors.

You’ll have to decide for yourself if the aesthetic is for you. Both my husband and kid said “Oh, from the future!” when they saw it. And the shiny blue turbine nozzles do give off space traveller vibes. It comes in silver and white in addition to the black and blue of my review unit and it only stands about 19 inches high, so it’s not terribly intrusive (unlike the Quidditch goal post that was the Dyson Purifier Cool).

There are onboard buttons and a small built-in display, but I found it far easier to just use the (well-designed) app. It’s a bit pricey at $350, and the filter costs have yet to be determined. But the HEPA filter can go up to five years (depending on usage), so that’s one less thing to think about. The carbon filter, however, does need to be replaced annually.

HEPA filter can last for five years
Good at adjusting to detected pollutants

More expensive than similarly sized models
Modern aesthetic might not be for everyone

The AirSancta CDa Pro from Innova Nanojet is different from any air purifier I’ve tested. It has no filter. It doesn’t suck in air and blow it out cleaner. Instead, it shoots a jet of finely atomized water into the air that encapsulates particulate matter — including viruses, pollen, dander and bacteria — that then fall out of the air and onto the floor.

According to the Innova Nanojet rep I spoke with, it’s the size of the water droplet that’s key here. The movement of the droplets and their submicron size (~800 nm) match the characteristics of ultrafine particles. Collision and diffusion cause the water to capture and accumulate the contaminants, making them heavy enough to drop out of the air.

You use the CDa Pro differently than a regular purifier, too. Instead of running it all the time, this only runs twice per day for two to ten minutes at a time, depending on the size of the room (two minutes for 200 square-food rooms, longer for larger rooms). And that’s all you’d want to run it because this thing is loud. My decibel counter measured between 90 and 100dB, which is lawn mower-level.

That said, I really liked using the CDa Pro. It needs about 0.3 gallons of distilled water for about 40 minutes of run time, which works out to a week or so of use. You can set it to run automatically, using the onboard display to connect to Wi-Fi, but I worried about giving myself a heart attack when it kicked on, so I used it manually, running it once in the morning and once in the evening. I set the time a little longer than my living room required because it’s also an effective humidifier.

Once on, the compressor gets to work and a few seconds later, an impressive jet of mist fires straight up into the air. Optional blue LEDs light up the water droplets as they shoot upwards, making the whole thing look very sci-fi.

I immediately felt a difference in the air; it smelled fresh, clean, and much more comfortable to breathe than the dry winter air that usually fills my house. Unfortunately, that’s as far as I can test the CDa Pro. It’s a completely different system, so my usual burn test isn’t applicable. Looking at my air quality monitors before and after running the unit, VOC levels dipped, but PM readings actually went up. That’s because the water droplets are read as particulate matter. I also don’t have equipment to test for the number of microbes in the air.

But if you go by Innova’s published third-party testing, the results indicate significant reductions (87 to 95 percent) in pollen and microorganisms, including the particularly stubborn Micrococcus luteus bacteria, after running the machine. And, according to case studies, the CDa Pro helps hospitals slow infection rates while the brand’s Google Reviews seem to point to a big reduction in seasonal allergy symptoms.

In addition to the noise, the CDa Pro has a few other strikes against it. For one, it looks like a piece of hospital equipment. Second, it’s huge and weighs 50 pounds — large enough to warrant wheels and a telescoping handle to help you move it around. Lastly, it’s $3,000. That might make sense for professional settings, but not the average person. The company is set to launch a consumer-grade version, the AirSancta CDa Mini, which will cost a comparably reasonable $700.

No filters to clean or replace
Third-party tests show allergen and virus reductions

If you’ve indicated any interest in air purifiers during your online travels, there’s a good chance you’ve seen ads for Windmill. Like Molekule machines from a couple of years ago, these things are (digitally) everywhere.

A big part of the appeal is aesthetics. Windmill models come in white, navy or bamboo finishes and, instead of the usual cylindrical tower shape, these have a squat, oblong design. Air is only pulled in through one side, which happens to be the side opposite the controls, so you’ll have to be careful about where you put it to ensure it gets enough airflow. It’s also unusually heavy at 21 pounds. Models with similar room-size ratings are often half that weight.

The app is pretty spare, with fan and mode controls, along with a particle meter readout, a few device settings and automations for setting schedules. The device itself has buttons and LED pips for fan and mode control and a small indicator light that changes from green to red to signal the air quality (Windmill also uses PM only to gauge the air).

In my tests, the Windmill more efficiently cleared the VOCs from the room when it was on lower fan settings. I suppose that makes sense in a way, as slower moving air spends more time passing through the carbon layer, which should theoretically trap more chemicals — but this was the only purifier I noticed that seemed to prove that theory.

There’s also a boost mode if you need to clear a bunch of air at once. It was one of the loudest fan speeds I tested, clocking in at 74 decibels on my sound meter app, but the lowest fan speed is inaudible. I appreciated that there are two sleep modes, whisper and white noise, with the latter setting the fan speed to what sounds like between medium and high and shuts off the LED lights.

Both Blueair and the Levoit Core models performed better overall than the Windmill — and both are cheaper — but if having an air purifier that doesn’t look like it belongs in a doctor’s office is important to you, this is an attractive way to go.

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