If you suffer from serious allergies or just want something that can help minimize the amount of allergens in your home, like pet dander or pollen from the outdoors, an air purifier is a worthy investment. The best air purifiers for allergies typically feature true HEPA filtration; an air purifier that meets that standard should be able to trap up to 99.97% of airborne particles as small as 0.3 microns. Common allergens like fine dust, pollen, and pet dander are typically this size or smaller, so most household units with HEPA-certified filters will be effective at trapping them. When shopping for an air purifier for allergies, look for models with a high enough clean air delivery rate (CADR) for the size of your space, since this measures how much air the device can purify in a given time. If you suffer from serious allergies, you'll likely run your air purifier almost constantly, so low operating noise across a wide range of fan speeds is another key consideration.
We've tested over 30 air purifiers, and below are our recommendations for the best air purifiers for allergies that you can buy. If you prioritize low operating noise and a small footprint above all else, you can also check out our recommendations for the best air purifiers for bedrooms. Or, you can see our picks for the best air purifiers for dust and the best air purifiers for pets.
Alternatively, if you're looking for a vacuum with HEPA-level filtration, you can check out our recommendations for the best HEPA vacuums and the best vacuums for allergies.
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 For Allergies
Bedroom8.2Pets8.5Particle Filtration Rate8.6Filtration Layers5 StageActivated CarbonPelletsRecommended Room Size @ Max Fan Speed46.8 m² (504 ft²)See all our test resultsMeasured PM1.0 CADR548 m³/hr (323 CFM)The best air purifier for allergies we've tested is the NuWave OxyPure. This air purifier is a great fit for larger spaces and can operate effectively within spaces exceeding 500 ft² (46.5 m2), as it provides a very high clean air delivery rate (CADR). This unit is jam-packed with features, including Wi-Fi and built-in particle sensors, so it can automatically adjust its fan speed to match changes in ambient air quality even when you aren't there to keep an eye on things. It's barely audible at its lowest fan speed, making it a stellar option for overnight use in bedrooms. While turning down its fan speed setting does blunt performance slightly, it's still more than able to operate effectively in most bedrooms in a low-noise configuration. Do note, however, that it's rather loud at its highest fan speed, which can be distracting if you have it set up to run in a large area and need it to run at full speed. There's also no getting around the fact that this is a very bulky unit, which can make it something of a hassle to set up if you don't have a lot of free space.
It has a multi-stage filtration system. The stainless steel mesh pre-filter tackles larger debris like dust clumps and fine hair. Following that, there are two filters for mold, viruses, and bacteria, an ozone filter, and then a combined HEPA/activated carbon for trapping things like pollen and fine dust, as well as reducing odors. Aside from the HEPA/activated carbon filter, the other filters have an advertised lifespan of 20 years, which results in lower operating costs compared to other air purifiers with shorter-lived filters.
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Best Upper Mid-Range Room Air Purifier For Allergies
Bedroom7.6Pets7.8Particle Filtration Rate7.9Filtration Layers1 StageActivated CarbonNoneRecommended Room Size @ Max Fan Speed33.4 m² (360 ft²)See all our test resultsMeasured PM1.0 CADR391 m³/hr (230 CFM)The Mila Air 3 is a great option if you want an air purifier for dealing with allergies that has a more customizable filtration system. In terms of performance, this model is more suited for medium-sized spaces like living or dining rooms than it is open concept living spaces; this unit has a max clean air delivery rate (CADR) that's roughly 40% lower than the NuWave OxyPure. Thankfully, it's far more compact, making it easier to set up in smaller rooms like bedrooms or offices. You can keep an eye on your room's air quality while you're out and about, thanks to its onboard Wi-Fi connectivity and live air quality monitoring system. It can still provide a high enough CADR for use in bedrooms and offices at low fan speeds, which is great for continuous operation, though it can be distracting at its highest fan speed.
This unit is available for purchase with a number of different filters optimized for different types of airborne particles: our test unit was fitted with 'The Big Sneeze' filter, an H13 HEPA filter meant for locking in most common allergens like pollen and pet dander. Other filters are available too, including 'The Mama-to-be' and 'The Overreactor', which have a denser H14 HEPA filter with even more closely-packed pleats to trap a higher rate of super-fine particles smaller than 0.3 microns. That said, these higher-density filters are completely overkill for trapping most allergens, which are larger than that, and they'll reduce airflow to the point where the unit is less effective in larger spaces.
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Best Mid-Range Air Purifier For Allergies
Bedroom8.0Pets8.0Particle Filtration Rate8.0Filtration Layers3 StageActivated CarbonSheetRecommended Room Size @ Max Fan Speed36.2 m² (390 ft²)See all our test resultsMeasured PM1.0 CADR424 m³/hr (250 CFM)If you aren't swayed by the Mila Air 3's chic, compact design and interchangeable filter system, and don't mind something a little bulkier, the Winix C610 is a very good option. It's a good match for the vast majority of dining and living areas, with a maximum clean air delivery rate (CADR) that's suitable for areas up to nearly 400 ft2 (37.2 m2), which is comparable to the pricier Mila. On the downside, lowering the fan speed to reduce noise has a greater impact on performance than it does with the Mila, though even at a quiet speed, it's still effective in smaller spaces. There's a good array of extra features too: you can set the unit to automatically adjust its fan speed, handy if air quality takes a dive while you're asleep, and even operate the air purifier remotely and set operating schedules with the smartphone app.
The Winix's filtration system consists of a mesh pre-filter for large dust motes and strands of pet hair, a True HEPA filter for dealing with fine dust, pollen, and pet dander, and an activated carbon filter to help reduce odors and vapors, though that carbon sheet isn't substantial enough to have a massive impact. There's also Winix's PlasmaWave system, an ionizer-like technology that's meant to neutralize fine airborne pollutants. That said, this system produces a small amount of ozone, a respiratory irritant; thankfully, the C610's performance is impressive without the system running.
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Best Budget Air Purifier For Allergies
Bedroom7.2Pets6.4Particle Filtration Rate6.0Filtration Layers3 StageActivated CarbonPelletsRecommended Room Size @ Max Fan Speed13.2 m² (142 ft²)See all our test resultsMeasured PM1.0 CADR154 m³/hr (91 CFM)If you want an air purifier for dealing with allergies in smaller rooms, the Levoit Core 200S is another great option. Compared to the Winix C610, it'll take more than twice as long to reduce airborne contaminants to the same level in an equivalently-sized room. That said, it's also the most compact option listed here, and its performance is generally suitable for smaller studies and bedrooms. Operating noise at low fan speeds is a plus point, perhaps unsurprisingly due to this unit's relatively small and low-powered motor. You can set this unit up on a nightstand or a bookshelf to run continuously without it presenting much of a massive disturbance. That said, it can be a bit of an annoyance if you run it constantly at its higher fan speed, which will be required for effective use in bigger bedrooms.
Unlike the pricier picks on this list, it isn't capable of automatically adjusting its fan speed depending in real time and lacks a built-in particle sensor, though that's unsurprising for a model in this price range. On the upside, you can remotely adjust its fan speed or set operating schedules using the VeSync smartphone app.
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A DIY Alternative
Bedroom4.3Pets7.7Particle Filtration Rate9.5Filtration Layers1 StageActivated CarbonNoneRecommended Room Size @ Max Fan Speed80.5 m² (867 ft²)See all our test resultsMeasured PM1.0 CADR943 m³/hr (555 CFM)If you're sensitive to allergies but don't mind getting your hands dirty, consider building your own Corsi-Rosenthal Box. Compared to the household units recommended in this article, this type of air purifier delivers a CADR sufficient for very large spaces like garages, workshops, or big basements, nearly 1000 ft2 (92.9 m2) in size. In real-world terms, when used in an equivalently-sized space, it'll provide a similar level of air quality as the Nuwave Oxypure in roughly two-thirds the time. This design does come with compromises, however: it has an even larger footprint than already-bulky units like the NuWave, and this design generates a significant amount of noise while running, regardless of fan speed. Some users have swapped out the single fan for multiple PC cooling fans to reduce noise, though we haven't tried it and can't verify its effectiveness. In addition, unless you use a smart plug, there's no way to operate the device while you're away from home, either.
We built our Corsi-Rosenthal Box with this guide, which features a 20-inch Lasko box fan and a quartet of MERV 13 3M Filtrete air filters. While the upfront cost of buying all these materials is generally less than the total cost of a high-end household unit, you'll need to replace the filters once they've been fully used, which means purchasing a new set of filters and effectively rebuilding the entire unit; this can drive up recurring costs in the long run.
Notable Mentions
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Dyson Purifier Big+Quiet Formaldehyde BP04:
The Dyson HEPA Big+Quiet Formaldehyde BP04 is a high-end air purifier and a good alternative to the NuWave OxyPure if you want something quieter and don't mind spending much more.
See our review -
Levoit Core 600S:
The Levoit Core 600S is a good alternative to the Mila Air 3 if you want something that provides even higher CADR and don't mind the lack of user-selectable filters.
See our review -
Levoit Core 400S:
The Levoit Core 400S is a good alternative to the Winix C610 if you want something a little more compact with similar performance. That said, it's even noisier at its highest fan speed.
See our review -
Levoit Vital 200S:
The Levoit Vital 200S lags behind the Winix C610 in terms of CADR, but it also takes up less room and runs more quietly.
See our review -
Coway Airmega 200M:
The Coway Airmega 200M is a good alternative to the Winix C610, offering a higher CADR at lower, quieter fan speeds. However, it lacks Wi-Fi connectivity and has a slightly wider footprint, which can be an issue in rooms where space is at a premium.
See our review
Recent Updates
May 20, 2026:
We've replaced the Coway Airmega 200M with the Winix C610 as the 'Best Mid-Range Air Purifier For Allergies' pick due to superior maximum performance. We've also added the Coway Airmega 200M to the Notable Mentions section of the article.
Apr 23, 2026:
We made minor text adjustments to further clarify product details. We also added the Levoit Core 400S to the Notable Mentions.
Feb 27, 2026:
We've made several changes to our recommendations due to current product availability and new performance data from version 1.1 of our air purifier test bench. We replaced the Honeywell HPA300 with the NuWave OxyPure as the top pick. We added the Mila Air 3 as the new 'Best Upper Mid-Range' pick. We replaced the Levoit Vital 200S with the Coway Airmega 200M as the 'Best Mid-Range' pick. We replaced the Levoit Core 300 with the Levoit Core 200S as the 'Best Budget'. We added the Levoit Vital 200S and the Levoit Core 600S to the Notable Mentions.
Nov 13, 2025:
We've checked that our picks represent the best recommendations and that the products are in stock.
Mar 08, 2025:
We verified all recommendations for relevance and availability. We changed the Corsi-Rosenthal Box link to point directly to the guide. We also added the Shark NeverChange Air Purifier MAX as a Notable Mention.
All Reviews
Our recommendations above include some of the best air purifiers for allergy sufferers. We factor in price, feedback from our visitors, and availability.
That said, there is no single best air purifier 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.