The 8 Best Air Purifiers for Allergies of 2022

The LEVOIT Air Purifier filters dust, smoke, and odors from your home

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Best Air Purifiers for Allergies

Verywell / Chloe Jeong

It's common to experience allergies all year round. While pollen and leaf mold are culprits of sneezing and a runny nose, indoor air pollutants, such as dust mites, pet dander, and mold, can also trigger allergies to start. That's why investing in an air purifier that will filtrate these pollutants is important.

Reviewed & Approved

The LEVOIT Air Purifier uses a HEPA filter and a three-stage filtration process to remove dust, odors, and smoke from the home, making it our top overall pick. The RENPHO HEPA Air Purifier is another great option if you're on a budget.

“Uncontrolled allergies can lead to developing asthma,” says Kathleen Dass, MD, a Michigan-based allergist and immunologist. “While most studies are usually small, the evidence does show improvement in allergic rhinitis with [air purifiers containing] HEPA filters.”

With an extensive air purifier market, it can be difficult to choose one. To make shopping easier, we conducted our own research and chose the best air purifiers based on the following attributes: cost, filtration levels, how quiet the device runs, and additional features like lights or remote operation. We also read countless reviews and consulted with allergists, including Dr. Dass.

Based on our research, here are the best air purifiers for allergies on the market.

Best Overall: LEVOIT Air Purifier for Home Large Room

4.9
Levoit LV-PUR131 Air Purifier

 Courtesy of Amazon

Pros
  • Three fan speeds

  • Sleep and Auto modes

  • Timer function

Cons
  • Night light doesn't turn off

Who else recommends it? NBC News also picked the LEVOIT Air Purifier for Home Large Room.

What do buyers say? 84% of 13,300+ Amazon reviewers rated this product 4 stars or above.

Using a 3-stage filtration process and a HEPA carbon filter, the LEVOIT Air Purifier filtrates and removes 97% of dust, odors, smoke, and other common household allergens, making it the best overall pick. The device is made to work best in rooms up to 360 square feet and has three fan speeds to accommodate the level of purifying you need. It also features a sleep mode and auto mode—the sleep mode allows the unit to run more quietly and with less LED display light, while the auto mode will shift between fan speeds according to how much purifying is needed in the room.

We also like that it includes a timer function so you can set it to run between one and 12 hours and has a Change Filter indicator built in. The Air Quality indicator light is color-coded so you can see at a glance what your current air quality level is. It’s also received a decent EnergyStar rating, requiring only about $12 to $15 to run every year.

Price at time of publish: $180

Filters: HEPA | Coverage Area: 360 square feet | Noise Level: 27 dB | Added Features: Sleep Mode, Auto Mode, Timer

Best Budget: RENPHO HEPA Air Purifier

RENPHO HEPA Air Purifier

Courtesy of Amazon

Pros
  • Timer function

  • Two light options

  • Child lock feature

Cons
  • Doesn't indicate air quality and auto-adjust

Cleaning all the airborne junk from your living space is a tall order, and it often requires an investment in a quality device to really get the job done. But not everyone has hundreds of dollars to spend on an air purifier to help with their allergies, which is why we like the RENPHO option.

With five stages of filtration, including a HEPA filter, a whisper-quiet sleep mode, and the ability to circulate air around a 240-square-foot room three times per hour, you really can’t argue with this model’s budget appeal. It also comes with three fan speeds, two light options (night light and rainbow gradient), a timer/auto shutoff option, and a child lock feature so kids can't accidentally change the settings or turn it off.

Price at time of publish: $90

Filters: HEPA, Activated carbon | Coverage Area: 240 square feet | Noise Level: 26 dB - 52 dB | Added Features: Child lock function, Two light options

Best High-End: Molekule Air Purifier

Molekule Air Purifier

courtesy of Molekule 

Pros
  • Ideal for larger spaces

  • Offers auto delivery for replacement filters

  • iOS and Android compatible

Cons
  • No HEPA filtration

Made to work in large spaces up to 1000 square feet, the Molekule Air Purifier pulls in air from every direction, working on a 360-degree spectrum. It’s quiet, portable, and ozone-free. It features a proprietary filter that uses nanotechnology (Photo Electrochemical Oxidation, or PECO) to remove impurities at the molecular level. The Molekule is also compatible with iOS and Android systems for remote operation and we like that it offers a Day View feature where you can check your air quality averages throughout the day. 

It’s an investment for sure, but Molekule also offers a 30-day trial period, full refunds, and a monthly payment plan. If it makes your life easier, you can also sign up for automatic deliveries of replacement filters (for an additional cost), making this a product you can purchase, plug-in, and forget about.

Price at time of publish: $699

Filters: Nanotechnology | Coverage Area: 1000 square feet | Noise Level: 41 dB - 65 dB | Added Features: Remote-controllable with app

Best Quiet: Greentech Active HEPA+ with ODOGard® Pro

5
Greentech Environmental pureAir Active HEPA+ Room with ODOGard - Odor Eliminator and Air Purifier
Pros
  • Gives real time air quality updates

  • Fast and easy setup

  • Eliminates odors

Cons
  • Expensive

The Greentech Environmental pureAir Active HEPA+ with ODOGard Pro Air Purifier is the perfect pick for anyone who wants all of the bells and whistles of a high-end air purifier without any of the background noise. This device stays virtually silent while providing realtime updates about the quality of the air in your home with a bright, easy-to-read screen. The odor-eliminating technology traps and eliminates odors associated with pets, cooking, and more to keep your home smelling fresh.

This device is incredibly simple to set up as well. After removing it from its box, you can put it together in less than a minute, and once its plugged in, the device is up and running. It's great for large spaces, too; it covers up to 750 square feet, so it's a great pick for both apartments and homes. While this air purifier is a bit more expensive than some of the others on this list, it's worth the investment for anyone who suffers from allergies and wants a sleek, silent air purifier to keep their home clean.

Price at time of publish: $849

Filters: HEPA | Coverage Area: 750 square feet | Noise Level: 23.72 dB - 52.97 dB | Added Features: Odor-eliminating technology

What Our Editors Say

"I love this air purifier for two main reasons. First, it has an incredibly simple setup that anyone can figure out, which is hard to find in home devices like air purifiers. Second, it has a sleek design with a large, bright display to tell you what the quality of the air is like in your home at any given moment, which makes it easy to stay on top of your health." — Christina Oehler, Verywell Health editor

Best for Small Rooms: LEVOIT Air Purifier

LEVOIT Air Purifier

Courtesy of Amazon

Pros
  • Compact size

  • Includes night light

  • Quiet motor

Cons
  • Doesn't indicate air quality and auto-adjust

This Levoit unit is compact but powerful, small enough to fit on a counter or nightstand, and efficient enough to circulate the air around a 129-square-foot room four times in one hour.

Just because it’s petite doesn’t mean it doesn’t pack a punch: this purifier cleans just as well as Levoit’s larger units, removing more than 99% of household allergens like dust, mold, dander, and smoke. It has a HEPA filter and is ozone-free, making it safe for use with asthma sufferers.

Because smaller units like this are often used in bedrooms, we like that Levoit has outfitted this purifier with a night light option and an ultra-quiet motor so it will help—not hinder—your beauty sleep.

Price at time of publish: $90

Filters: HEPA, Activated carbon | Coverage Area: 129 square feet | Noise Level: 25 dB | Added Features: Night light

Best with Humidifier: Boneco Air Washer W200 Humidifier & Purifier

 BONECO - Air Washer W200 Humidifier & Purifier

Courtesy of Amazon

Pros
  • Dishwasher-safe

  • Can add essential oils

  • Daytime and nighttime modes

Cons
  • No HEPA filtration

BONECO Air Washer is a powerhouse unit that evaporates water into vapor, adding moisture to the air, then uses that water as a filter to naturally clean the air in your living space. The Air Washer can clean up to 540 square feet and is designed to eliminate large particles, so while it may not filter out things like pesky odors, it’s suitable for dust and pollen.

On the technical side, the BONECO unit has both daytime and nighttime operating modes for maximum efficiency, dishwasher-safe parts for regular cleaning, and even a diffuser port for adding your favorite essential oils to really freshen your space. And we like that there are no filters to change or replace.

Price at time of publish: $253

Filters: N/A | Coverage Area: 540 square feet | Noise Level: N/A | Added Features: Essential oil tray, day and night modes

Best Smart: Hathaspace HSP001 Smart True HEPA Air Purifier

Hathaspace

Amazon

Pros
  • Remote operated

  • Detects air quality and auto-adjusts

  • Display turns off for sleep mode

Cons
  • Can be loud

The Hathaspace Smart Air Purifier is not only operable with a remote, it actually has the computer brains to detect air quality and adjust itself accordingly. Using a smart sensor, this unit takes continuous readings of the air quality in the room it’s in. In normal mode, you can observe the data and change the settings on your purifier; in auto mode, though, the purifier will change its own fan speed as needed based on the air quality readings. 

The Hathaspace purifier features a five-step filtration system (including an ionizer and a HEPA filter) powerful enough to remove up to 99.97 percent of allergens, trap dust, pet hair, and dander, and eliminate annoying odors. It can cover up to 700 square feet so it's powerful enough for large spaces and we like that the display lights turn off so it won't disrupt your sleep when running at night.

Price at time of publish: $230

Filters: Cold catalyst, Activated carbon, HEPA | Coverage Area: 700 square feet | Noise Level: 21 dB – 43 dB | Added Features: Remote operated

Best for Pet Allergies: Germ Guardian True HEPA Filter Air Purifier with UV Light Sanitizer

Germ Guardian True HEPA Filter Air Purifier with UV Light Sanitizer

Courtesy of Amazon

Pros
  • UV-C light kills bacteria

  • Fast purifying

Cons
  • Replacement filters are expensive

For pet owners, an air purifier like the Germ Guardian is a great way to cut back on the amount of pet hair and dander floating around in the air and landing all over the floors and furniture. The hardworking filtration system traps both large and small particles, like dirt, hair, dander, and dust, while also eliminating common pet odors. Its UV-C light kills airborne bacteria and viruses, meaning not only does it reduce the amount of germs in your home thanks to Fido’s romp in the mud, but it also keeps your home healthier during cold and flu season.

What’s more, we like that the unit has been tested for energy efficiency and against the clean air delivery rate (CADR) system, receiving high marks in both metrics. Not only does it clean the air well, but it also does it quickly, reducing the amount of time you’ll need to keep it running for relief.

Price at time of publish: $96

Filters: UV-C light, HEPA, Charcoal | Coverage Area: 153 square feet | Noise Level: 55 dB | Added Features: Filter change indicator light, Sleep mode

Final Verdict

Levoit is well-known for highly-rated and functional air purifiers; you get a lot of bang for your buck with the standard Levoit PUR131 unit we chose as best overall for its 97% filtration ability along with included features like sleep mode, auto mode and a timer function. If you’re looking for an affordable, quality purifier, we recommend the RENPHO Air Purifier for its efficient, four-stage filtration process.

How We Rated Air Purifiers for Allergies

4.8 to 5 stars: These are the best air purifiers for allergies we reviewed. We recommend them without reservation.

4.5 to 4.7 stars: These air purifiers for allergies are excellent—they might have minor flaws, but we still recommend them.

4.0 to 4.5 stars: We think these are great air purifiers for allergies, but others are better.

3.5 to 3.9 stars: These air purifiers for allergies are just average.

3.4 and below: We don't recommend air purifiers for allergies with this rating; you won't find any on our list.

How We Selected Air Purifiers for Allergies

Quality air purifiers clean and deodorize the air in your living and work spaces to help keep you healthy. This can be accomplished with different types of filters and odor-eliminating features. We selected the top air purifiers for allergies for our list by looking for trusted brands with top-rated products. We researched product details, read customer reviews, and checked with an allergist about what to look for.

We chose air purifiers based on the type of filtration they offer and what particles they filter, the square footage they cover, and special features such as automatic mode settings, remote control operation, and automatic air quality detection.

What to Look for in Air Purifiers for Allergies

HEPA Filtration

HEPA stands for high-efficiency particulate air, and Dr. Dass says that purifiers with HEPA filters have been the most extensively studied—and the only kind proven to filter particles out as small as 0.3 micrograms. That makes them one of the best tools in combating the effects of indoor allergens. 

Size

When we’re talking about size for air purifiers, we mean the square footage the device can cover and clean the air around you. If your device only covers a small space within a large room, it's not doing the job you need it to in order to remove allergens. Air purifiers have a clean air delivery rating (CADR), which indicates how efficient the device is at cleaning the air. “The AHAM (Association of Home Appliance) says ‘that as a rule of thumb, the CADR of your air cleaner should be equal to at least two-thirds of the room’s area,’” says John McKeon, MD, CEO of Allergy Standards Limited speaking on behalf of the asthma and allergy friendly Certification Program for the AAFA. 

UV Ionization

Some air purifiers are electrically-charged, or ionized, with UV technology to further clean and sanitize the air. This is a feature that some people benefit from, but others—like those with asthma—should avoid these types of purifiers, says Dr. Dass: “They have been shown to create an ozone [which] can actually trigger or exacerbate your asthma symptoms.” 

Frequently Asked Questions

  • Where is the best place to put an air purifier?

    Air purifiers can be helpful to people who suffer from allergies because the device is capable of removing allergens and other debris from the environment. Since these machines can be expensive, it’s important to place the device in the room most used by the user. “Portable air cleaners are best for the rooms you spend the most time in like your bedroom or home office,” says Melanie Carver, the chief mission officer of the Asthma and Allergy Foundation of America (AAFA). Room size should be considered when selecting the machine and where you place it, because purifiers can only clean a specific radius. “Air cleaners have ratings that show the volume of air they can clean,” Carver says. “The device needs to accommodate the size of your room.”

  • Which one is better for allergies: a humidifier or an air purifier?

    Air purifiers and humidifiers serve different purposes when addressing allergies. While air purifiers help remove allergens, dust, and other particles from the air, humidifiers provide moisture into the air while eradicating some of the larger particles from the environment. Carver cautions against using humidifiers all the time, though, because the added moisture could actually make one’s allergies worse. “Too much moisture can lead to mold growth and more dust mites, both of which trigger asthma and allergy symptoms,” Carver says, adding that mold and dust mites thrive in environments with humidity above 50 percent. “Mold spores can get in your nose and cause allergy symptoms. Spores can also get in your lungs and trigger asthma,” she says. Humidifiers are only recommended to keep humidity between 30 to 50 percent. Otherwise, Carver says some people might need a dehumidifier if they live in a humid environment, because “if the air is too humid, air purifiers won’t work properly.” 

  • Which plants purify air the best?

    Indoor plants are capable of improving the oxygenation in the room and removing some pollutants from the air. But Carver warns that added greenery won’t make a substantial difference to the air quality in a room unless it’s “filled with plants”. This doesn’t mean that someone shouldn’t add greenery to their space. Carver says it's important to do one’s research on the plants, because some collect more dust or require moist potting soil, which can lead to mold. “You can also focus on greening the outdoor environment just outside your home,” Carver says. Some top allergy friendly plants include the bamboo palm and the dracaena, both of which can help purify the air and capture some allergens. 

  • Is it ok to leave an air purifier on overnight?

    Experts recommend leaving a portable air purifier on overnight in order to create an environment that’s free of most allergens and other irritants. In fact, people notice a difference in their air quality more if the air purifier is left running for extended periods of time compared to turning it off every few hours. There is concern about leaving an electric device like an air purifier running all night without paying attention to it, but these machines were actually created to be constantly running. “Be sure to follow the manufacturer’s recommendations on where to place your air cleaning device, and keep it free of clutter in front and behind the appliance,” Carver recommends. 

Why Trust Verywell Health?

Sarah Bradley has been writing health content since 2017—everything from product roundups and illness FAQs to nutrition explainers and the dish on diet trends. She knows how important it is to receive trustworthy and expert-approved advice about over-the-counter products that manage everyday health conditions, from GI issues and allergies to chronic headaches and joint pain.

Additional reporting to this story by Danielle Zoellner

As a seasoned health writer, Danielle Zoellner knows the importance of finding just the right product to fit your medical needs. Throughout her career, Danielle has interviewed a variety of experts in the medical and health fields while reviewing dozens of products. Her experience and knowledge in the field work together to help readers like yourself find the best products for your daily life.

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  1. Best independently tested and certified air purifiers. NBC News. https://www.nbcnews.com/select/shopping/best-air-purifiers-ncna1294453