Whether you worry about everyday dust and pollen or more serious pollutants like smog, mold, wildfire smoke, viruses, or bacteria, an air purifier is a worthwhile investment. That range of concerns might sound broad, but many of these pollutants have something in common: they travel through the air as particles. Larger irritants like dust, pollen, and mold spores, as well as much smaller particles from smoke, smog, and respiratory aerosols, can all be captured by a purifier as it cycles air through an effective filter.
The best air purifiers come with a HEPA-grade filter, since these are designed to capture a high percentage of fine airborne particles. You should also consider a model with an activated carbon filter if odors, smoke, or VOCs are a concern. There are a few other considerations when shopping as well. You want a model that cleans the air efficiently for the size of your space, without creating excessive noise if you plan to run it throughout the day or overnight. Depending on your needs, features like smart sensors, app connectivity, washable filters, or lower long-term maintenance costs may also be worth considering.
We've tested over 35 models to find the best air purifiers, and below are our recommendations. We take into account a wide range of budgets, room sizes, and priorities. If you want to explore other options, check out our recommendations for the best air purifiers for dust, the best budget and cheap air purifiers, and the best air purifiers for bedrooms. Alternatively, if you're looking for a way to keep your floors clean, see our recommendations for the best HEPA vacuums.
We buy and independently test air purifiers with no manufacturer samples, sponsorships, or pre-approved talking points. Each unit goes through the same standardized test bench, and the results are validated by multiple teams before being published on our website, so you can accurately compare them side by side.
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Best Air Purifier
Particle Filtration Rate9.1Bedroom9.0Pets9.1Recommended Room Size @ Max Fan Speed62.2 m² (670 ft²)Recommended Room Size30.8 m² (332 ft²)Noise @ Lowest Fan Speed31.2dBASee all our test resultsNoise @ Highest Fan Speed58.2dBAThe best air purifier we've tested is the Blueair Blue Signature Large, and it's amazing for anyone shopping for an air purifier that can handle large, open spaces, but in a quiet, functional package. At its maximum fan speed, this air purifier's clean air delivery rate (CADR) is high enough for it to work as a single unit even in large, open-concept living areas. It's quite loud in this configuration, but thankfully, even at lower, quieter fan speeds, its performance is still a good match for medium-sized living areas, with its coverage in this configuration exceeding 330 ft² (30.7 m²). One caveat, however: this unit's HEPASilent filter system has an ionization layer that draws particles to its electrostatically charged filter stage, which also produces ozone as an operating byproduct. While the system's ozone production level is AHAM-certified to fall within safe limits, the main issue is that this system can't be turned off. This can be a potential dealbreaker for those who suffer from acute ozone sensitivity, or some pet owners.
The Blue Signature Large has a wide, squat design, but also thankfully doubles as functional furniture, with a flat top that allows you to use it as an end table. You can pair this unit with your smartphone to change settings while you're away from home or, thanks to its laser particle sensor, get a fairly accurate estimate of air quality while you're at work or simply away from home.
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Best Upper Mid-Range Air Purifier
Particle Filtration Rate8.8Bedroom7.8Pets8.4Recommended Room Size @ Max Fan Speed52.7 m² (567 ft²)Recommended Room Size23.5 m² (253 ft²)Noise @ Lowest Fan Speed33.7dBASee all our test resultsNoise @ Highest Fan Speed61.2dBAIf the Blueair Blue Signature Large's always-on ionization system is, in fact, a dealbreaker, the Levoit Core 600S is worth considering. While its clean air delivery rate falls some way short of the class-leading Blueair, the Core 600S is still far from a poor performer in this regard and is a viable option if you want a single unit for an entire studio apartment, large open-concept living and dining areas, or a larger basement space. At its highest fan speed, it can effectively handle rooms up to 567 ft² (52.7 m²), though. As far as features go, it's Wi-Fi enabled, allowing you to view an estimate of air quality, change the fan speed setting, or be alerted whenever the filter needs to be replaced.
Unfortunately, this unit is noticeably louder than the pricier Blueair at both its highest and lowest speeds, so it won't be quite as unobtrusive for overnight operation in a bedroom. That said, it still performs well at quieter fan settings, where it can effectively clean spaces up to 253 ft² (23.5 m²), making it practical for bedrooms, offices, or smaller living spaces where noise levels matter more. Its overall footprint is smaller than the Blueair, though this is still a fairly tall unit that can't be used as a table.
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Best Mid-Range Air Purifier
Particle Filtration Rate8.0Bedroom7.7Pets7.9Recommended Room Size @ Max Fan Speed35.3 m² (380 ft²)Recommended Room Size15.2 m² (163 ft²)Noise @ Lowest Fan Speed33.6dBASee all our test resultsNoise @ Highest Fan Speed61.3dBAFor anyone shopping for a new air purifier for their home office or bedroom, we recommend the Coway Airmega 200M. Its three-stage filtration system is similar in composition to that of the Levoit Core 600S, though it does have a less powerful motor, making it less suited for larger rooms or open-concept spaces. However, it's still powerful enough to provide clean air in small- to medium-sized rooms up to roughly 380 ft² (35.3 m²), making it suitable for small apartments and average-sized living rooms, too. It also performs reasonably well at quieter fan settings, where it can still clean areas up to 163 ft² (15.2 m²), making it practical for bedrooms or offices where lower noise levels are a priority. At its quietest setting, it produces 33.6 dBA, while higher fan speeds become much more noticeable and can be somewhat intrusive in quieter spaces. Unlike the pricier Levoit, you can't connect this device to a home Wi-Fi network, so there's no capacity for remote operation and live monitoring of your room's ambient air quality.
This unit is also equipped with a particle ionizer, which works by electrically charging airborne particles so they clump together and fall out of the air more easily. The downside is that ionizers can produce small amounts of ozone as a byproduct, which may irritate the lungs with prolonged exposure. Fortunately, the feature can be turned off entirely if that's a concern for your household.
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Best Budget Air Purifier
Particle Filtration Rate6.0Bedroom7.2Pets6.4Recommended Room Size @ Max Fan Speed13.2 m² (142 ft²)Recommended Room Size7.2 m² (78 ft²)Noise @ Lowest Fan Speed33.6dBASee all our test resultsNoise @ Highest Fan Speed54.7dBAIf you want to spend as little as possible and only need something for a smaller room, the Levoit Core 200S is the best budget air purifier we've tested. It lags behind larger machines, such as the Coway Airmega 200M, with a considerably lower air-cleaning rate and poorer overall performance when sealing in the smallest airborne particles. That said, this device is also small enough to fit on a dresser, nightstand, or shelf, yet still offers enough airflow to clean spaces up to 142 ft² (13.2 m²), making it a practical choice for bedrooms, nurseries, dorm rooms, or small home offices. It isn't powerful enough for larger living rooms or open-concept spaces, but for smaller rooms where you're sitting or sleeping relatively close to the purifier, it can still make a noticeable difference in day-to-day air quality.
It also stays fairly unobtrusive noise-wise. At quieter fan settings, it produces a soft background hum that's easy to tune out while sleeping or working nearby. Even at its highest fan speed, it remains less disruptive than many larger purifiers, though its low-noise air-cleaning performance is fairly limited. At lower settings, it can only effectively clean areas up to 78 ft² (7.2 m²), so you'll need to run it at higher fan speeds to achieve the best performance in anything larger than a very small bedroom or office. While the 200S lacks an automatic fan speed adjustment setting, it's Wi-Fi enabled, allowing you to pair it with your smartphone via the VeSync companion app to operate the device remotely, set operating schedules, or receive filter replacement notifications.
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A DIY Alternative
Particle Filtration Rate9.5Bedroom4.3Pets7.7Recommended Room Size @ Max Fan Speed80.5 m² (867 ft²)Recommended Room Size54.3 m² (585 ft²)Noise @ Lowest Fan Speed51.7dBASee all our test resultsNoise @ Highest Fan Speed67.3dBAIf you don't mind sacrificing convenience features, style, and quiet operation, consider building your own Corsi-Rosenthal Box. We used this guide to make our own with a set of 3M Filtrete air filters and a Lasko 20-inch box fan. This homemade machine isn't nearly as practical or feature-rich as our top pick, the Blueair Blue Signature Large. It's ugly, bulky, and very noisy, so it's not the best option for spaces like living rooms or bedrooms. Even at its lowest fan speed, it produces about 51.7 dBA, creating a constant fan hum that's hard to ignore in quieter spaces. At its highest setting, noise levels climb to 67.3 dBA, loud enough that holding a conversation nearby can become difficult. It also lacks niceties like particle sensors and Wi-Fi connectivity, though you could add the latter yourself using a Wi-Fi-controlled outlet. There's also no odor-absorbing carbon filter, though most air purifiers we've tested lack sufficient carbon to effectively deal with even moderate levels of volatile organic compounds.
That said, it's hard to beat the Corsi-Rosenthal Box in terms of actual performance. It offers a very high clean air delivery rate, sufficient for big open-concept living spaces up to 867 ft² (80.5 m²). More impressively, it still maintains excellent low-noise filtration performance, effectively handling spaces as large as 585 ft² (54.3 m²) even at quieter fan settings. If you plan to set it up in an area where noise, size, and aesthetics aren't a concern, such as a workshop, garage, basement, or utility space, it's hard to do any better. It's also worth noting that some iterations of the Corsi-Rosenthal Box utilize multiple PC case fans instead of a single box fan, which is intended to help reduce operating noise and boost efficiency. That said, we've yet to build a Corsi-Rosenthal Box in this manner, so we can't personally guarantee how it performs.
Notable Mentions
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Dyson HEPA Big+Quiet Formaldehyde BP06:
The Dyson HEPA Big+Quiet Formaldehyde BP06 is a high-end alternative with a good clean air delivery rate, though it's outpaced by the Blueair Blue Signature Large in that respect, which also has a more compact and discreet design.
See our review -
Mila Air 3:
The Mila Air 3 is an upper mid-range air purifier with a multitude of available filters. It runs quietly and has a relatively small footprint, but the actual clean air delivery rate falls short of the Levoit Core 600S.
See our review -
Levoit Vital 200S:
The Levoit Vital 200S is a fantastic alternative to the Coway Airmega 200M if you don't need the ionizer system, and its wide air inlet prevents hair from clogging its intake, making it an excellent option for pet owners. That said, it lags slightly behind in terms of CADR.
See our review -
Blueair Blue Pure 211i Max:
The Blueair Blue Pure 211i Max is a high-end air purifier that represents a good alternative to the Blueair Blue Signature Large. That said, it's also noisier than the latter and can't be used as an end table.
See our review -
NuWave OxyPure:
The NuWave OxyPure is a high-end air purifier with a unique washable filtration system that should minimize recurring costs when compared to the Blueair Blue Signature Large. That said, the Blueair has a more compact design and can handle larger areas with greater ease.
See our review -
Rabbit Air A3:
The Rabbit Air A3 is a high-end air purifier that runs impressively quietly, and uniquely for an air purifier with this level of coverage, can be mounted to your wall to free up space on your floor. That said, the Blueair Blue Signature Large outpaces it in terms of clean air delivery rate.
See our review
Recent Updates
Jun 17, 2026:
We've replaced the NuWave OxyPure with the Blueair Blue Signature Large as our pick for the 'Best Air Purifier' due to its superior performance and more compact design. We've also added the NuWave OxyPure, Rabbit Air A3, and Blueair Blue Pure 211i Max to our Notable Mentions section.
May 15, 2026:
We've updated this article with additional low-noise filtration data, along with expanded room size and noise test details to reflect Test Bench 1.2. We also verified that our recommendations remain available and up to date.
Apr 16, 2026:
We've ensured that all main picks remain available and continue to represent the best option for user needs.
Feb 25, 2026:
We added the Levoit Core 600S as a new 'Best Upper Mid-Range Air Purifier' pick and replaced the Levoit Vital 200S with the Coway Airmega 200M as the 'Best Mid-Range Air Purifier' pick, since the Coway performs better overall. We added the Levoit Vital 200S and the Mila Air 3 to the Notable Mentions.
Nov 06, 2025:
We made slight in-text adjustments to further clarify product details.
All Reviews
Our recommendations above are some of the best air purifiers for most people. We factor in the price, feedback from our visitors, and availability.
That said, there is no single best choice for homes that will suit everybody; your needs will depend on your budget, the size of your living space, your tolerance for operating noise, and whether you like having a device with convenience features like Wi-Fi connectivity. If you'd like to choose for yourself, here's the list of all our air purifier reviews.