Best Air Purifiers for Allergies in 2026: Pollen, Dust Mites and Dander

The best air purifier for allergies has a HEPA-grade filter, enough CADR for the room you spend the most time in, and ideally no ionizer. Our pick is the Levoit Core 600S: AHAM verifies it at 433 cfm for pollen and 606 sq ft, it’s ENERGY STAR certified and costs around $300. For a bedroom, the quieter Coway Airmega Mighty2 is the one we’d choose. If a dog or cat is the main trigger, our guide to the best air purifier for pets goes deeper on dander, hair and odor.

Important: An air purifier is not a treatment for allergies or asthma. If you have symptoms, talk to your doctor or an allergist about testing and medication before you rely on one.

How we chose

We don’t test purifiers. Every pick comes from manufacturer spec sheets and manuals, the AHAM Verifide directory, the CARB certified list and the ENERGY STAR database, checked in October 2026 (our research method explains the process). A pick had to be sold new in the US and use a HEPA-grade or HEPA-labeled particle filter. We gave extra weight to:

• Pollen and dust CADR, preferably AHAM-verified. Where a brand isn’t in the AHAM directory, we say whose number it is.
• Room size on the same basis (AHAM’s 4.8 air changes per hour), not the 1 or 2 air-change figures some brands advertise.
• No ionizer, or one you can switch off. EPA calls ozone a lung irritant, which matters most for people with asthma.
• Filter options and running cost over a year.

We left out discontinued models such as Honeywell’s HPA100, HPA200 and HPA300, which Honeywell’s own store marks as discontinued.

Allergy air purifiers compared

Model	Pollen / dust CADR	Room size	Ionizer	Price band
Levoit Core 600S	433 / 398 (AHAM)	606 sq ft	None advertised	Around $300
Coway Mighty2 AP-1512N	249 / 242 (Coway)	About 360 sq ft*	None	Around $270
Blueair Blue Pure 311i Max	365 / 314 (Blueair)	439 sq ft	Electrostatic, always on	Around $230
Medify MA-112 PRO	450 / 600 (AHAM)	930 sq ft (AHAM)	None	Around $595
Rabbit Air A3	315 / 262 (Rabbit Air)	About 398 sq ft*	Yes, can be switched off	Around $750
Levoit Core 300-P	155 / 156 (AHAM)	215 sq ft (AHAM)	None advertised	Around $90 to $100

*Our math: smoke CADR × 1.55, AHAM’s room-size formula (Coway 240, Rabbit Air 257). Coway only publishes a 1 air-change figure, and Rabbit Air rates the A3 at 535 sq ft on a 4 air-change basis.

The best air purifiers for allergies

Levoit Core 600S

Best for: most people with seasonal or indoor allergies, in a living room or large bedroom.

The AHAM directory lists the Core 600S (now sold as the Core 600S-P) at 394 cfm for smoke, 398 for dust and 433 for pollen, with a 606 sq ft room size. That pollen figure is close to the 450 cfm ceiling of AHAM’s test. The filter has a pre-filter, a main particle filter and an activated-carbon stage with what Levoit calls a high concentration of carbon pellets. It’s on the current ENERGY STAR list, and the app, laser PM2.5 sensor and Auto mode let it ramp up when pollen drifts in. Noise is rated at 26 to 55 dB.

The trade-off: nothing is washable, and Levoit sells HEPA-grade, Original, Toxin Absorber and Smoke Remover filters from around $60 to $80, every 6 to 12 months. Levoit advertises no ionizer, but CARB lists one SKU (LAP-C601S-WUSR) as electronic while the others are mechanical. AHAM measured 65.6 to 67.3 W at full speed.

Check the Levoit Core 600S on Amazon

Coway Airmega Mighty2 AP-1512N

Best for: a bedroom, where most dust mite exposure happens and quiet matters.

Coway’s March 2026 update to the AP-1512HH has a manufacturer CADR of 240 for smoke, 242 for dust and 249 for pollen. Coway rates it at 19 to 50 dB and says it is Quiet Mark certified. A washable pre-filter sits in front of a single Max2 filter that combines activated carbon with HEPA (Coway claims 99.97% at 0.3 µm), rated for up to a year. CARB lists it as mechanical, and Coway’s page mentions no ionizer. A laser sensor reads PM1, PM2.5 and PM10 and drives Smart, Sleep and Eco modes.

The trade-off: Coway isn’t in the AHAM directory, so these are Coway’s numbers, and it publishes no AHAM-style room size; by AHAM’s formula, 240 smoke CADR suits about 360 sq ft. The filter price isn’t published. The unit is around $270.

Check the Coway Mighty2 on Amazon

Blueair Blue Pure 311i Max

Best for: a medium bedroom or home office if low running cost matters.

Blueair rates the 311i Max at 283 smoke, 314 dust and 365 pollen CADR and 439 sq ft, and the ENERGY STAR record for this SKU matches. It draws 32 W at most, so it’s one of the most efficient units here, and Blueair rates it at 23 to 50 dB. The fabric pre-filter on the outside is washable. Blueair sells an AllergenBlock filter (around $65) next to the standard and SmokeBlock versions, each lasting up to 9 months.

The trade-off: Blueair’s HEPASilent system charges particles electrostatically, and there’s no documented way to turn that off. CARB lists it as electronic, and ENERGY STAR measured 2 ppb of ozone, far under CARB’s 50 ppb limit but not zero. If ozone is a concern for someone with asthma, we’d pick the Coway or Levoit instead. The unit is around $230.

Check the Blueair 311i Max on Amazon

Medify MA-112 PRO

Best for: an open living area or a large basement family room.

The AHAM directory lists the MA-112 PRO at 600 cfm for smoke and dust and 450 for pollen, the maximum AHAM’s current test can verify for each, and a 930 sq ft room size. Behind the pre-filter sit H13 HEPA material and a carbon-pellet layer. There’s no ionizer, and CARB lists it as mechanical. Noise runs from 24.6 dBA on speed 1 to 58.1 dBA on speed 4.

The trade-off: it’s big, draws 160 W and has no sensor or app. The filter set is around $140 and Medify rates it at about 3,000 hours, or 4 to 5 months, so it’s the most expensive pick here to keep running. The unit is around $595.

Check the Medify MA-112 PRO on Amazon

Rabbit Air A3

Best for: allergy sufferers who want to match the filter to their trigger and mount the unit on a wall.

Rabbit Air rates the A3 at 257 smoke, 262 dust and 315 pollen CADR. It stacks a washable pre-filter, a medium filter, two layers of granular activated carbon, a BioGS HEPA filter and one customized filter: Germ Defense, Pet Allergy, Odor Remover or Toxin Absorber. Noise is 20.3 to 51 dBA across five speeds, and Wi-Fi, particle and odor sensors and an Auto mode are included. The replacement kit is around $115, every 12 months at 24/7 use.

The trade-off: the CADR is Rabbit Air’s own, with no AHAM or ENERGY STAR record. It has a negative ion generator; it can be switched off, and CARB lists the A3 as electronic. At around $750, you pay mostly for flexibility and quiet, not more clean air.

Check the Rabbit Air A3 on Amazon

Levoit Core 300-P

Best for: a small bedroom or dorm on a tight budget.

AHAM lists SKU LAP-C302-WUSR, which appears to be the Core 300-P, at 139 smoke, 156 dust and 155 pollen CADR and 215 sq ft (Levoit says 222). One cylindrical filter combines a fine pre-filter, a particle filter and activated carbon, and Levoit sells a Pet Allergy version for around $36. Noise is 24 to 54.5 dB, and the display can be switched off for sleep.

The trade-off: AHAM lists the filter as “HEPA-Type”, Levoit publishes no replacement interval, and nothing is washable. CARB certifies the “Core 300” as mechanical but lists one SKU code as electronic, though Levoit advertises no ionizer. It’s around $90 to $100.

Check the Levoit Core 300-P on Amazon

What matters when you buy for allergies

Know your trigger

Allergens behave differently in the air, and that decides how much a purifier can do:

• Pollen comes in from outside. AAFA says it enters through doors and windows and on clothes and pets, and recommends keeping windows closed in pollen season and using air conditioning or air cleaners with HEPA filtration to reduce indoor airborne allergens.
• Pet dander is the easiest target. The American Lung Association says pet allergens can linger in the air longer than other allergens because they are microscopic and jagged. See our best air purifier for pets guide for pet-specific picks.
• Dust mites are the hardest. The ALA says their allergen settles quickly into dust and fabrics and that most exposure happens while sleeping. A purifier helps little here; bedding and humidity control help more.
• Mold spores need a moisture fix first. Our best air purifier for mold guide covers what a purifier can and can’t do.

HEPA, not “HEPA-type”

The US Department of Energy defines HEPA as at least 99.97% efficient at 0.3 µm, and EPA notes that larger and smaller particles are caught even more efficiently. “HEPA-type” and “HEPA-like” have no federal definition. Because CADR rates the whole unit, including any air that slips around the filter, we’d trust an AHAM-verified CADR over any filter label or claim of a “sealed” design.

Pollen CADR and room size

AHAM rates CADR for three test particles: smoke (about 0.1 to 1 µm), dust (0.5 to 3 µm) and pollen (5 to 11 µm). Pollen grains are the largest, so pollen CADR is usually the highest of the three. Size the purifier by smoke CADR anyway, since that’s what AHAM’s room-size rule uses: at least two-thirds of the floor area with an 8 ft ceiling. A 12 x 15 ft bedroom (180 sq ft) needs at least 120 cfm. Our air purifier size calculator handles other rooms and ceiling heights.

No health body we found sets an allergy-specific air-change target. CADR is measured on the top speed, though, so we’d size up one step if you plan to run the purifier quietly overnight.

Ionizers and asthma

EPA warns that ionizers, electrostatic precipitators, some UV lights and plasma units may emit ozone, and advises against ozone generators entirely. CARB certification caps emissions at 0.050 ppm, which isn’t zero. Four of our six picks have no ionizer; the Rabbit Air’s can be switched off. Our guide to air purifier side effects explains the risks.

Placement and running cost

Put the purifier in the room where you spend the most hours, which for most people is the bedroom, with clear space around the intake. Our guide on where to put an air purifier has the details. Electricity varies a lot by model, from 32 W (Blueair 311i Max) to 160 W (Medify); plug the wattage into our air purifier electricity cost calculator to see what running it all season costs.

What an air purifier can’t do

EPA says no air cleaner removes all pollutants, and filtration doesn’t replace controlling the source. Allergens on your pillow, sofa and carpet stay there until you clean them. The ALA’s dust mite advice is a good checklist:

• Cover mattresses and pillows with allergen encasements.
• Wash bedding in hot water, at least 120°F, once a week.
• Keep indoor humidity below 50%. Our guide to ideal indoor humidity explains how.
• Vacuum carpets weekly with a HEPA vacuum and dust with a damp or microfiber cloth.

For pollen, AAFA adds: take shoes off at the door, shower before bed and dry laundry indoors in pollen season. If dust keeps building up in spite of all this, read why your house is so dusty.

In our view, one well-sized purifier running in the bedroom (see our best air purifier for bedroom picks), plus encasements and weekly hot washes, does more for most allergy sufferers than a small unit in every room.