Best air purifiers 2022: Top picks from Levoit, Dyson and more (2023)

By Lou Mudge

Contributions from

Joanne Lewsley

published

These are the best air purifiers we’ve tested to protect your home from dust, mold and pollutants

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The best air purifiers can transform the quality of your indoor air, protecting you from harmful particles, dust, mold, and even certain respiratory viruses. They can also be a game changer for those who suffer from asthma or lung problems, and in our increasingly polluted environment, air purifiers can protect our respiratory health and help us breathe better. But which models are best suited to your needs and preferences? We’ve rounded up the best options in our tried and tested guide to the best air purifier.

Without a doubt, air purifiers keep getting more technologically advanced. According to Ernesta Jones, from the Environmental Protection Agency (opens in new tab), “some portable air cleaners can filter the small particles of greatest health concern – those that are smaller than 2.5 microns in diameter”. There are also air cleaners that can filter both particles and gasses.

Many brands have started equipping their appliances with high quality HEPA filters, which are able to remove at least 99.97% of allergens down to 0.3 microns in size. This is smaller than most indoor air pollutants.

These filters can be particularly beneficial for people with asthma. In a 2004 study of 937 children with atopic asthma, those who used a HEPA filter had significantly fewer asthma symptoms during the 12-month study period, compared with those who did not. There were also demonstrably lower levels of allergens such as house dust mite and cockroach allergen detected on the bedroom floor in the treatment group, and these lower allergen levels correlated with clinical improvements in asthma.

Modern air purifiers may also be equipped with an ionizer, UV sterilization, and a host of other filters. They may also come with a range of additional features, such as an in-built humidifier or essential oil trays.

At Live Science, our team has spent countless hours testing the best air purifiers to come up with a list of recommended models. As well as price, we’ve considered ease-of-use, design, functionality, and of course, performance. Scroll down to discover our round-up of the best models you can buy — or skip to our FAQ section, to read through advice from doctors and environmental protection agency members on the benefits of air purifiers. If you’re looking specifically for an air purifier for allergies, we’ve put together another handy guide to help you choose.

Experts

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Environmental Protection Agency

We spoke with members of the Environmental Protection Agency to confirm the latest research and findings on air purifiers.

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Dr. Ross Perry

Dr Ross Perry qualified at Guy’s & St Thomas’ Hospital Medical School in 1994. He is now the medical director of Cosmedics Skin Clinics. For this piece, he offers advice on potential pollutants in the home and the efficacy of air purifiers.

Best air purifiers in our tests

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1. Levoit Core 400S

This is the best air purifier we've tested

Specifications

Energy star certified: No

Height: 20.5 inches

(Video) Best Air Purifiers 2022 - 72 Purifiers Objectively Reviewed

Diameter: 10.8 inches

Weight: 11lbs

Reasons to buy

+

Affordably priced

+

PM2.5/timer display

+

Easy to set up and use

Reasons to avoid

-

The app can be unreliable

The Levoit 400S performed best to remove airborne particles in our at-home testing, capturing at least 99.5% and up to 100% or particles during testing.

Its sleek and stylish cylinder shape with a neutral colorway makes it an easy addition to any room, whatever the décor, while a color-coded display gives users a great visual on air quality at any given moment.

What the users say

The Levoit 400S scores an impressive 5 stars out of 5 on Amazon, with 85% of reviews giving it the full 5 stars. Negative reviews cite problems with the VeSync app and a lack of sturdiness in design. Positive reviews praise the purifier’s accuracy in tracking 2.5 microns and its ability to manage and remove unpleasant odors, dust and pet dander. Customers particularly like the look of the Levoit 400S, although some say it feels a little big. They also appreciate how quietly the purifier runs on its lower settings.

The air purifier is light and features indented handles at either side, making it easy to move from room-to-room.

A companion app that users can download gives useful data on air quality and allows users to schedule and time the air purifier to fit round a busy family schedule. Unfortunately, for all its great functionality, the VeSync app wasn’t always reliable. During the course of our testing, we had to uninstall and reinstall the app twice when it crashed. The quietest setting on the Levoit 400S is barely discernible, while the most powerful setting still clocks in at just 52 decibels.

Stylish, quietly powerful, and with an intuitive, easy-to-use Smart interface, the Levoit 400S is our top pick of air purifiers. It could be the ideal appliance for you if you’re looking for an effective air purifier that’s big on performance but doesn’t blow the budget.

  • Read our full Levoit 400S review (opens in new tab)

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2. Coway AP 1512 HH

Our favorite budget air purifier

Specifications

Energy star certified: Yes

Height: 18 inches

Diameter: 10 inches

Weight: 12.5lbs

Reasons to buy

+

Space saving design for bedrooms

+

Energy-saving eco mode

+

Four-stage filtration system

Reasons to avoid

-

Small design unsuitable for entire home

-

Replacement filters aren't cheap

-

Noisy at highest setting

The Coway AP 1512 is known as a standout air purifier due to its excellent value and high-quality performance.It may not be as stylish as other air purifiers in our round-up, but our testing found it to do a remarkable job of removing particles in just 30 minutes.

What the users say

The Coway AP 1512 HH Air Purifier has an impressive 4.7 star rating out of five on Amazon, and with reviewers praising its quiet running, affordable replacement filters and its economical performance, it’s fair to say that this is a total winner with users. Negative reviews said that the included instructions did not quite go far enough in instructing users how to set up and use their air purifier. Positive reviews were sold by how lightweight and easy to maneuver the air purifier was, as well as the design which was easy to integrate into their home.

For an initial cost of under $300, this air purifier can offer you a four-stage filtration system, a HEPA filter and coverage of up to 361 square feet. The air purifier itself is packaged in a neat, sleek design and available in two different colors, black and white.

This air purifier excels when it comes to dust and eradicating odors, with a pre-filter and odorization filter for reducing contaminants in the air. It’s also inconspicuous when it comes to noise, making it a suitable addition to any bedroom when paired when its smaller size.

The Coway-AP-1512HH air Purifier also benefits from a built-in particle sensor. That means that you can get an idea of the air quality in your home from the color coding system on the top of the device. It’ll show a blue light when the air is clean, purple to flag pollution and red for high pollution. Another clever feature of the Coway AP- 1512HH is the sensors that can adjust the fan speed to keep the air clean, so that you don’t have to mess with the settings.

We particularly liked the Eco mode on the Coway AP-512HH which worked well to power down the air purifier when air pollution was low, saving energy and money. Our tester also found the auto mode worked well to toggle between fan settings depending on indoor air quality.

The Coway AP-1512HH is an air purifier suited to small spaces of rooms up to 361 square feet, making it suitable for smaller spaces and bedrooms. If you need something for a larger room, then you might want to look elsewhere while bearing in mind that this is a fantastic choice for smaller spaces.

  • Read our full Coway AP-1512HH review

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3. Dyson Purifier Cool

A stylish air purifier with excellent smart features and cooling capabilities

(Video) Top 5 - Best Air Purifiers (2022)

Specifications

Energy star certified: Yes

Height: 41 inches

Length: 4.72 inches

Width: 8.7 inches

Weight: 11lbs

Reasons to buy

+

Sleek, stylish design

+

Powerful air purifying capability

+

Connectivity and smart features

Reasons to avoid

-

Expensive outlay

-

Can get noisy at elevated levels

The Dyson Purifier Cool is one of the most stylish air purifiers on the market. Its unusual design marks it out as a talking point in any room, while simple but genius extras, such as a magnetic remote control, take it a step up from your average air purifier.

What the users say

The Dyson Purifier Cool scores an average of 4.2 out of five stars on Home Depot. Negative reviews cite problems with the sensors’ baseline readings, poor fan quality, and noisiness when in use. Positive reviews praise the purifier’s ability to improve the symptoms of allergy sufferers, as well as removing unpleasant odors. Customers particularly like the integration with smart devices, the auto setting and the purifier’s stylish design, with one user commenting, ‘It looks like a piece of art’.

The purifier also doubles up as a fan in hotter weather, although this isn’t as powerful as some users would like. Users can activate, schedule and monitor their purifier via the Dyson app, allowing them to set fan speed, timers and check air quality whether they’re home or away.

A clever LCD display flicks between icons that show air quality data in real time, while an auto-mode senses air particles and adjusts fan settings to suit.

We burned a series of matches to test how well the purifier captures particles. At a level 6 setting, we found that the purifier removed 98% of particles smaller than 0.3 microns, 72% of particles smaller than 2.5 microns and 73% of particles measuring smaller than 10 microns. At a level 10 setting, we found that the purifier captured 95% of particles smaller than 0.3 microns, 96% of particles smaller than 2.5 microns, and almost 100% of particles measuring smaller than 10 microns.

Based on these limited tests, our results weren’t consistent enough to support Dyson’s claim that it can remove 99.95% of particles. However, it still performed well, often capturing more than 95% of monitored particles when used at its highest setting for at least 30 minutes.

The Dyson Purifier Cool’s high price tag may be too expensive to suit everyone’s budget, but its stylish, sleek design and smart, connected functionality is impressive.

  • Read our full Dyson Purifier Cool review (opens in new tab)

4. Blue Pure 211+

One of the most powerful air purifiers we tested - perfect for larger spaces

Specifications

Energy star certified: Yes

Height: 21 inches

Depth: 13 inches

Width: 13 inches

Weight: 15.5lbs

Reasons to buy

+

Low energy consumption

+

Powerful air purifying capability

+

360-degree air intake

+

Ideal for larger rooms or offices

Reasons to avoid

-

No smart features

-

Bulky, heavy unit

The Blue Pure 221 is designed to cover areas of up to 600 square feet, making it an excellent choice for homes with larger rooms or office spaces. With three power settings operated with a one-touch button, simplicity is the key for this purifier.

What the users say

The Blue Pure 221 scores an impressive 4.8 out of five stars on Home Depot, with hundreds of five-star reviews from satisfied customers. Positive reviews praise the purifier’s performance, saying it helps them sleep better, feel less congested, and enjoy cleaner air quality in their home. Many users love the unit’s design and are happy with how quiet it can run. Negative reviews cite problems with performance, the expense of replacing filters, and some complain that the higher settings are too noisy.

Our at-home tests found the Blue Pure 221 to be consistently better than all the other air purifiers we tested. Despite its lack of Smart technology, it out-performed purifiers at almost double the price.

We burned a series of matches to test how well the purifier absorbed particles. At a level 2 setting, we found that the purifier absorbed 99.7% of particles smaller than 0.3 microns, 99.5% of particles smaller than 2.5 microns, and 100% of particles measuring smaller than 10 microns. At a level 3 setting, we found that the purifier absorbed 99.9% of particles smaller than 0.3 microns, 99.6% of particles smaller than 2.5 microns, and 100% of particles measuring smaller than 10 microns

(Video) Best Air Purifiers 2022: Top 10

Some users may be put off by the unit’s weight and bulk. But it’s still a stylish machine that’s thoughtfully designed. Plus, its customizable fabric pre–filters make it easy to pair the unit with any home’s color scheme.

Our verdict? A dependable workhorse of an air purifier that puts performance above presentation. Plus, we like the fact that it’s energy star certified and cheap to run.

  • Read our full Blue Pure 221 review (opens in new tab)

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5. Levoit H132

A great air purifier if you're on a very tight budget

Specifications

Energy star certified: No

Height: 12.6 inches

Diameter: 20 inches

Weight: 6.5 lbs

Reasons to buy

+

Affordable

+

Quiet fan, even at fastest speed

+

Easy to set up and use

Reasons to avoid

-

Can't program the unit

-

Didn’t perform as well as expected in tests

Small enough for any desktop or shelf, the Levoit H132’s compact size and low price makes it the ideal air purifier for someone looking to try their first air purifier at home. If you have a small apartment, or you simply want to use an air purifier in one room only, then this might be the product for you.

What the users say

The Levoit H132 scores an impressive 4.7 out of five stars on Home Depot. Negative reviews are few and far between, with one customer finding problems with the motor whining after a few weeks. Most reviews are positive, with users praising the purifier as convenient and highly efficient at reducing the symptoms of allergies. Customers particularly like how quiet the purifier runs, even at the highest setting. Users say the purifier worked so well to improve indoor air quality that they bought a second one for another room.

The Levoit H132 might lack the wow–factor of more stylish purifiers. However, what it lacks in style, it certainly delivers in sheer affordability. Available for under $100, this is definitely one of the best air purifiers for those on a budget.

While this particular air purifier might lack the HEPA filter that gives premium air purifiers their mark of quality, it does come with an in-built dimmable nightlight, making it an ideal air purifier for a nursery or child’s bedroom. While it’s not possible to pre-program the unit, a memory function means that previous fan settings are logged before it powers down.

Unfortunately, the Levoit H132 didn’t quite live up to expectations when it came to testing how well it absorbed particles, consistently falling some way below the 99.97% expected from a device with an H13 HEPA filter. However, running the purifier for longer periods may yield better results.

The Levoit H132 may not have all the bells and whistles of a smart air purifier, but its affordability and compact size makes it the ideal entry-level indoor air purifier that performs well in small to medium-sized rooms.

  • Read our full Levoit H132 review (opens in new tab)

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6. KOIOS EPI810

This portable air purifier is a convenient option for travel

Reasons to buy

+

Works straight out of the box

+

Small enough to travel with

+

Built-in night light

Reasons to avoid

-

Noisy on highest setting

-

Not the best performance

-

Expensive replacement filters

Light and compact, the KOIOS EPI810 is the smallest air purifier we’ve reviewed. It will sit comfortably on any office desk or shelf and its 2.5lb weight makes it light enough to take travelling.

What the users say

The Koios EPI810 has an impressive 4.5 stars out of five on Amazon.com. Users who gave it the full five stars praise the purifier’s performance as well as its conveniently compact size. Others rate its ability to neutralize unpleasant cooking odors and pet smells. Many reviewers have bought several purifiers to use in multiple rooms. Negative reviews point out that the purifier can be noisy at its highest setting, or that they have been unable to switch the night light setting off. Other criticize the quality of the unit as having a ‘cheap’ feel and say the replacement filters are too expensive, at almost half the price of the base unit.

(Video) Best Air Purifier For Pets In 2022 -Top 5 Picks

The purifier can operate from a mains socket or via USB, while a simple one-click button control makes it one of the easiest air purifiers to operate straight out of the box. A built-in night light makes it a good choice for a nursery or kids’ room.

Our at-home incense smoke test evaluated how well the purifier performed after burning five incense cones simultaneously and found mixed results. While the KOIOS EPI810 absorbed an impressive 99% of particles measuring 10 microns, it only absorbed 52% of particles smaller than 2.5 microns

While it doesn’t have the wow factor when it comes to design, or the sophistication of a smart, connected air purifier, the KOIOS EPI810 may work well if you want something easy to operate. However, a noisy higher setting and a lacklustre performance in our at-home tests may put some users off.

  • Read our full KOIOS EP1810 review (opens in new tab)

How do we test air purifiers on Live Science?

Every air purifier in this guide has been tested to the exact same standards, using the same processes. We created a series of tests to measure particles of different sizes, to see how each air purifier performs with certain types of impurities. We use a particle counter for all our testing, and our equipment is capable of measuring the smallest pollutants (0.3 microns) that can be removed from the air by a purifier.

We start by running an ambient air quality test, where we run the air purifier in multiple rooms in a home to see how it performs at the regular setting, and the highest possible setting (below 50 decibels). We make note of readings after 15 and 30 minutes to see the speed at which the machine removes particles from the air. We also measure the noise levels generated by the fan, to comment on how noticeable the purifier will be in an average home.

We then test different particle sizes using matches and incense to generate different types of smoke, taking measurements at regular intervals and on different speed settings.

Our testing also takes into account the size of the unit, the cost, ease of use, availability of additional parts, and the energy use on the lowest and highest settings. Finally, we check online user reviews to see what people think, and we test for any persistent problems or defects that we read about.

As per our testing policy, we fully disclose all our findings in our reviews.

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Are air purifiers worth it?

The best air purifiers are a great way to help improve the air space around you and your family. As well as protecting those with health issues from the multitude of air pollutants that gather indoors, those without specific concerns will have peace of mind that the right air purifier will make their environment cleaner.

The air purifiers that are most likely to give you the most benefit, for example those including a HEPA filter, tend to be at the higher end of budgets — generally into the hundreds of dollars. The size of the unit will also play a huge part in the cost — with the larger units that cover a larger area being greater in price.

If you have health concerns, or a recurring allergy, keeping pollutants out of your home with an air purifier is definitely worthwhile. Americans now spend roughly 90% of their time indoors, according to the Environmental Protection Agency (opens in new tab). It's here that potentially harmful air is able to build up, meaning there are up to five times higher levels of pollutants indoors, than outdoors. An air purifier can help reduce these levels significantly, though not entirely eradicate them, helping you and those around you breathe easier.

Do air purifiers work?

Depending on the type of allergy, and the trigger, air purifiers have also been found to help reduce the presence of particles in the air that cause allergic reactions, which can in turn cause asthma attacks. Dehumidifiers have also been shown to be helpful for asthma sufferers, during times of high humidity. In cases where your indoor space has little or poor ventilation, air purifiers can also come in useful, especially if you are looking to tackle smoke and the resulting odor.

It is still unclear whether air purifiers do anything to prevent the spread of COVID-19 indoors. The Center for Disease Control (CDC) advises that you should open doors and windows to keep a good flow of air moving indoors — weather permitting, of course. HEPA filters, found in some air purifiers, have been found to remove some viruses from the air.

“Portable air cleaners, also known as air purifiers or air sanitizers, are designed to filter the air in a single room or area, and they have the potential to improve the indoor air quality in that space,” said Ernesta Jones, from the Environmental Protection Agency.

Jones added thatHEPA filters (opens in new tab)can be particularly useful for those suffering from allergies or asthma. “Multiple studies with portable air cleaners that use a HEPA filter have found improvements in one or more allergy and/or asthma symptoms,” she said.

“Several studies suggest that using a portable air cleaner where people are spending time, such as in the bedroom while sleeping, may be more effective than leaving it in a central location, such as in the living room.”

Dr. Lee adds that the scientific evidence of research into childhood asthma also indicate that the best air purifiers can significantly help reduce potentially triggering particulate matter within the home.

"In one study, air purifiers were installed in eight houses, with children with childhood asthma. A control group was also studied which did not have an air purifier," she explains. "After 12 weeks, the treatment group showed a clinical improvement in asthma, with better night-time peak flows, whereas these had deteriorated in the control group. The concentration of particulate matter found in the treatment group had decreased by 43%, and this was significantly greater than the control group."

What causes indoor pollution?

"High temperatures and humidity can increase concentrations of some pollutants and be detrimental to health," Dr. Ross Perry, Medical Director of Cosmedics skin clinics, told Live Science.

"The most common pollutants are cigarette smoke or tobacco and cleaning products – harsh chemicals can give off fumes that irritate the nose, mouth, lungs and skin.

“Another source of indoor pollution is air fresheners and candles. These can reduce air quality and linger in the home. Paints, glue and craft products can also be problematic as can mold, pollen, pets, dust mites, wood burners and gas stoves."

Dr Lee adds that you need to be aware of the cleanliness and humidity levels of your environment if you want to keep indoor pollution levels low. "Reduce environmental triggers by hoovering regularly — twice a week or more — with a hoover with a HEPA filter," she recommends. "Use anti-allergy bedding and don’t smoke in the house or anywhere near the bedroom. Keep the humidity less than 50% as high humidity encourages house dust mites. Take your shoes off as soon as you come into the house to avoid treading allergens into the carpets and up the stairs."

What are HEPA filters?

You’ll notice most of the air purifiers for rooms that we tested have something called a high-efficiency particulate absorbing (HEPA) filter. These can remove 99.97 percent of air pollutants from 0.3 microns in size, which basically means they are really effective at getting rid of the majority of indoor air pollutants.

For context, most dust particles are about five microns in size, and pollen is a staggering 10-1,00 microns – all of which a HEPA filter is able to trap and remove.

Perry tells Live Science that while the most effective air cleaners can remove lots of different types of particles, you’ll never get 100 percent pure air.

He says: "The idea of an air purifier is that it’s designed to get rid of the impurities in your home and neutralize any nasties, such as dust, smells, pet dander, smoke, bacteria and viruses.

“Air purifiers work by having a fan that sucks the dirty air in the home into filters. These then remove any impurities before releasing the cleaned air back into the room. It's important to note, however, that it’s impossible to get rid of all particles, which can live on walls, carpets, bedding and hard surfaces.”

Air purifier benefits

For many of us, clean air can make our living space more comfortable. But for those who struggle with respiratory problems, such as allergies, asthma or COPD, the presence of harmful airborne particles can make their symptoms unbearable and directly endanger their health. Similarly, immunocompromised individuals may feel much safer knowing that their air purifier will trap microbes that can make them very sick.

As Perry points out, we may still need more large-scale studies to assess the exact effect of air purifiers on our health, but it’s hard to deny the fact that, for some, these devices may be indispensable.

“It makes sense that the cleaner the air, the easier it is for anyone with breathing problems and susceptible to allergies,” he says. “If you’re an asthma sufferer and want to purchase an at-home air purifier, then it’s a good idea to keep a diary to see if it does make a difference in symptoms. Remember though that an air purifier will not get rid of all impurities so asthma needs to be managed as prescribed by your doctor.”

“The same goes for people who suffer from allergies, the cleaner the air and being able to manage pollen and dust is going to help and will be dependent, of course, on the time of year when pollen count is higher.”

Best air purifiers 2022: Top picks from Levoit, Dyson and more (11)

Lou Mudge

Health Writer

Lou Mudge is a health writer based in Bath, United Kingdom for Future PLC. She holds an undergraduate degree in creative writing from Bath Spa University, and her work has appeared in Live Science, Tom's Guide, Fit & Well, Coach, T3, and Tech Radar, among others. She regularly writes about health and fitness-related topics such as air quality, gut health, diet and nutrition and the impacts these things have on our lives.

She has worked for the University of Bath on a chemistry research project and produced a short book in collaboration with the department of education at Bath Spa University.

(Video) Top 5 BEST Air Purifier to Buy Under $200 of [2022]

FAQs

Are Levoit air purifiers worth it? ›

If you need to clean the air in a space of around 200 square feet or less, the Levoit Core 300 (sometimes listed as the Levoit VortexAir) is a solid and inexpensive purifier. It was impressive in our tests, reducing particulates by more than 97% on its high setting in 30 minutes in a 135-square-foot New York office.

Who makes the best air purifier for home? ›

  • Blueair Classic 605. $829.99. $999.99. ...
  • Blueair Blue Pure 211+ $319.99. Target. ...
  • Honeywell HPA300 Air Purifier. $264.55. $429.95. ...
  • Blueair Protect 7470i. $599.99. $759.99. ...
  • Instant AP300 Air Purifier. $179.23. ...
  • Bissell air320 Max Smart WiFi Air Purifier. $339.99. ...
  • Germ Guardian AC4825 Air Purifier. $99.99. ...
  • Levoit LV-H132 Air Purifier. $89.98.
24 Aug 2022

Is there a better air purifier than Dyson? ›

Where Can I Get One? While they might not have the cooling or heating capabilities of Dyson's Hot + Cool air purifiers, the Molekule Air and Molekule Air Mini are unmatched when it comes to making the air you breathe cleaner.

Where is the best place to put an air purifier in the living room? ›

Place the Air Purifier Closest to the Source

If you happen to have a neighbor who smokes leading to some odors seeping into your home, place the air purifier near the vent or wall where the odor is most concentrated.

Is Levoit a good brand? ›

Levoit is the No. 1 brand when it comes to price performance. The best Levoit purifiers are just as capable of removing indoor air pollutants such as dust, pollen, smoke, mold, and so on, as the premium air purifiers.

What air purifier do allergists recommend? ›

For people with allergies, scientific studies have shown that air filtration reduces these airborne allergens and may provide some relief. Experts recommend two types of filtration: For a single room, look for an air cleaner with a HEPA (high-efficiency particulate air) filter.

Do doctors recommend air purifiers? ›

In addition to regular sanitizing, many doctors are now recommended air purifiers for work and home. In addition, a growing number of healthcare practices have bought air purifiers from us, and the results they experience have led to glowing recommendations.

Is there a downside to air purifiers? ›

What are the downsides of air purifiers? There aren't a lot of downsides to having an air purifier in your home aside from the financial investment. Many ionizers, especially older models, can generate ozone when they are operating, which is known to exacerbate asthma.

How many air purifiers do you need in a house? ›

If you have a 1,400 sq ft home, you need 2 of them for proper air purification. If you have a living space with a 12×12 bedroom, 15×10 kitchen, and 14×14 living room, a single air purifier might be enough. You can even move it around from room to room to increase indoor clean air circulation.

Is Blue air or Levoit better? ›

ft. Blueair 411 improved air quality by 95% in 1 hour. In the same period, Levoit Core 300 improved air quality by 93%. In the bigger room tests are identical, and you can see all the tests in detail in the table below.

Should I sleep with air purifier on? ›

Should I Sleep With an Air Purifier On? The short answer: yes. The Asthma and Allergy Foundation of America (AAFA) recommends an air purifier during bedtime to promote better breathing while you sleep.

What should I look for when buying an air purifier? ›

Look for an air purifier that's good at filtering out pollutants specific to your home or health needs (removing pet dander or cigarette smoke, for example). Compare CADR ratings, which show how quickly the air purifier can filter air. Choose a device that uses a HEPA filter, the gold standard for indoor air purifiers.

Can one air purifier clean the whole house? ›

Air purifiers can typically clean more than one room at once, though it will depend on the size of the rooms and the power of the purifier. You can always run the air purifier continuously at a low setting or move it around as needed.

Is Dyson purifier worth the money? ›

The variety of models can accommodate various room sizes, remove formaldehyde, and function as a heater or humidifier. They're especially useful to people who own a pet, have allergies, or live in a polluted area. Dyson air purifiers are expensive, but if they fall within your budget, they may be a worthy investment.

Which Dyson purifier is best? ›

Final Verdict For All Dyson Air Purifiers
  • Best Pure Hot Cool model: Dyson HP04. Powerful, Media HEPA, and exceptional air purifier in every sense.
  • Best Pure Cool model: Dyson TP04. ...
  • Best Pure Humidify Cool model: Dyson PH01. ...
  • Best Personal mode: Dyson Pure Cool Me.
26 Jul 2022

Do Dyson air purifiers use a lot of electricity? ›

Dyson air purifiers do not use a lot of electricity. Dyson air purifiers use 32% less electricity, on average, compared to other air purifiers. On average, Dyson air purifiers use 200.56 kWh of electricity per year, which is considerably lower than the average of 294.93 kWh.

Where should you not put an air purifier? ›

Avoid placing your air purifier in a corner or against the wall. That can block the air intake and reduce the rate at which the unit can take in and clean the air in the room. You should also make sure your air purifier is clear from upholstery, furniture, electronics or other objects that may impede airflow.

Can you leave Levoit air purifier on all the time? ›

Is it safe to leave an air purifier on all day? Yes, it's safe to leave your air purifier on all day. But, you need to make sure that you clean the filters about once a month. The filters trap heavy amounts of dust and allergens which can be harmful to sensitive groups if they're not cleaned consistently.

Should you run an air purifier with the windows open? ›

But here's the more interesting part: even with the windows open, it's still possible to significantly reduce indoor particulate by turning on an air purifier. Turning on the air purifier with the window open still reduced pollution levels by 60% within 20 minutes.

Is Levoit made in China? ›

Levoit Core 300 (Made in China)

By utilizing a H13 True HEPA filter, ultra-fine pre-filter, and a high-efficiency Activated Carbon filter too, this purifier will remove 99.97% of allergens, including dust, pollen, and pet hair, as well as tackling VOCs, smoke, and odors to boot.

Does Levoit air purifier remove dust? ›

LEVOIT Air Purifiers for Home, H13 True HEPA Filter for Smoke, Dust, Mold, and Pollen in Bedroom, Ozone Free, Filtration System Odor Eliminators for Office with Optional Night Light, 1 Pack, White.

Does Levoit air purifier get rid of smells? ›

The Levoit air purifier is also designed to eliminate musty or strong odors like, say, that delicious curry you made for dinner or the dog smell that hits you when you open the front door. You can thank its activated carbon filter, which absorbs the odors so you don't have to smell them.

Does sleeping with an air purifier help allergies? ›

Air purifiers remove particulates from the air. These cleaning devices reduce allergic symptoms and enhance sleep. By providing clean air in the sleep breathing zone, all participants reported improved quality of life and quality of rest.

Are there any air purifiers that actually work? ›

No purifier can capture all of the pollutants and particles that travel through a room, but depending on the type of filter used, they may capture many allergens and other unwanted substances. Many air purifiers feature HEPA filters that capture particles, including dust, pollen, and some mold spores.

Do air purifiers make air dry? ›

So the answer to does air purifier dry out the air is no. Air purifiers do not reduce indoor humidity, they can only improve indoor air quality. In the process of air purifier purifying the air and improving air quality, the humidity will not be affected.

What do hospitals use to purify the air? ›

In hospitals and healthcare facilities, HEPA filtration is a powerful weapon against the particulates and biological contaminants that can harm and kill. HEPA filters are key to maintaining pure air.

What do doctors say about air purifiers? ›

Another study found that indoor HEPA air filters improved respiratory health in those with asthma. However, doctors don't have any long-term data that points to air purifiers reducing strokes, heart attacks or death rates.

Do air purifiers help lungs? ›

The research shows that air purifiers can reduce or remove many of the contaminants known to exacerbate lung problems and respiratory illnesses. By running a high-quality air purifier, you can improve your indoor air quality while reaping significant health benefits.

What are the two disadvantages of HEPA filters? ›

While it can remove some airborne particulate, standard HEPA filters are not capable of removing some of the most airborne contaminants. While HEPA can remove large air particles such as animal dander, dust, pollen, and more, other common air pollution such as viruses, bacteria, and VOCs remain in the air.

How long does it take an air purifier to clean a room? ›

An air purifier can completely clean the air in the room in 30 minutes to 4 hours. This may seem like a wide range, but there are a lot of varying factors such as room size, ceiling height, CADR, pollution rates, and more.

Should you leave air purifier on all day? ›

Yes, you should run your air purifier 24/7 and you shouldn't turn it off anytime. In fact it's recommended to not switch off your air purifier at any time of the day or night, even when you're sleeping or not at home.

Is it better to have one large air purifier or several small? ›

Air circulation: If your room has poor air circulation, or is a complex shape (such as an L shape or a long thin shape) then you may benefit from multiple smaller air purifiers to improve ventilation. Two air purifiers placed at different locations in your room may help improve air circulation.

Do air purifiers have to be in the middle of the room? ›

Give your air purifier adequate ventilation

Given that ventilation is so important, you would think that placing your purifier right in the middle of your room would be best. However, this is not the case. Placing your purifier towards one side of the room is ideal due to the way particles diffuse in an area.

Should air purifier be in the middle of the room? ›

The best scenario is to be able to place your air purifier on top of a table or other surface near the center of the room, away from corners and obstructions. If that isn't possible, getting it into a relatively open part of the room should do the trick.

What is the difference between Levoit 300 and 400? ›

The only significant difference between the Core 300S and 400S are the size of the rooms they are designed for. With the 400S' ability to service larger rooms come a expected differences–larger dimensions, weight and as a slight uptick in fan noise when running on the highest fan setting.

Is Levoit medical grade? ›

That's right; the Levoit LV-H135 model comes with the medical-grade HEPA filter that can capture more than 99% of the smallest air pollutants that are tiny – down to 0.1 microns in size.

Which is better medify or Levoit? ›

Room Tests. In the first test, in a room of 194 sq. ft., Levoit Core 300 improved air quality by about 93% in 60 minutes, working at max speed, while Medify MA-25 improved air quality by about 94% in the same conditions. Undoubtedly, both devices made excellent results and, at the same time, justified their popularity.

How many hours a day should I keep my air purifier on? ›

So to recap, run your air purifier unit for at least 12 hours a day. This is a good rule of thumb. Again, it's okay if you don't stick to this schedule every day, but be aware that the more you run your air purifier the fresher and cleaner it will be all year long.

How much should I spend on an air purifier? ›

Expect to spend at least $200 on a portable unit. Top-rated models that purify large spaces may run up to $700. In addition, replacement filters cost $20 to $200 (a few models come with washable filters), and because experts recommend that you run purifiers 24/7, you'll have to factor in electricity.

What is the best air purifier on the market for the money? ›

Best Air Purifiers. CR's take: The Alen BreatheSmart 75i Pure proves to be top-notch at capturing and removing dust and smoke while running at both high and low levels, earning an Excellent score on both tests. Holding a conversation or getting work done while the unit runs should be easy enough.

Should I close the door when using air purifier? ›

Air purifiers are most effective when all the doors and windows are shut. This allows for the air purifier to clean the air in the room without interference from hallways or other rooms.

Can I put an air purifier on carpet? ›

To a small degree, yes they can. If air purifiers can filter out microscopic contaminants out of the air, that is less dust and pollutants that your carpet could be absorbing.

Are there any air purifiers that actually work? ›

No purifier can capture all of the pollutants and particles that travel through a room, but depending on the type of filter used, they may capture many allergens and other unwanted substances. Many air purifiers feature HEPA filters that capture particles, including dust, pollen, and some mold spores.

Is there a downside to air purifiers? ›

What are the downsides of air purifiers? There aren't a lot of downsides to having an air purifier in your home aside from the financial investment. Many ionizers, especially older models, can generate ozone when they are operating, which is known to exacerbate asthma.

Do doctors recommend air purifiers? ›

In addition to regular sanitizing, many doctors are now recommended air purifiers for work and home. In addition, a growing number of healthcare practices have bought air purifiers from us, and the results they experience have led to glowing recommendations.

Is it worth it to buy expensive air purifier? ›

Yes, in general, the more expensive air filters are more effective, but a single person with no pets and allergies might not need as much filtration as a family of five with three pets and a child with asthma. Also consider how long your air filter will last.

Do air purifiers use a lot of electricity? ›

Luckily, air purifiers don't use a whole lot of electricity. They have a maximum wattage of anywhere between 40W and 200W (even the biggest ones max out at 100W), and that's for the highest speed settings. You can easily run an air purifier on a lower 10-30 watt setting.

What should I look for when buying an air purifier? ›

7 Things to Consider Before Buying an Air Purifier
  • Outline Your Needs. ...
  • Choose the Right Filtration System. ...
  • Consider the ACH and CADR Ratings. ...
  • Check Cleaning Requirement and Maintenance Cost. ...
  • Consider Noise Level and Energy Consumption. ...
  • Smart Features. ...
  • Certifications and Warranty.
11 Mar 2022

Do you need an air purifier in every room? ›

You don't absolutely necessarily need an air purifier in every room. If you check out the list of the best air purifiers here, you can see that most of them can purifier the air in 500 sq ft or so. However, it is generally recommended to have an air purifier for each room.

What are the two disadvantages of HEPA filters? ›

While it can remove some airborne particulate, standard HEPA filters are not capable of removing some of the most airborne contaminants. While HEPA can remove large air particles such as animal dander, dust, pollen, and more, other common air pollution such as viruses, bacteria, and VOCs remain in the air.

What happens if you leave an air purifier on all day? ›

Is it safe to leave an air purifier on all day? Yes, it's safe to leave your air purifier on all day. But, you need to make sure that you clean the filters about once a month. The filters trap heavy amounts of dust and allergens which can be harmful to sensitive groups if they're not cleaned consistently.

How long does it take an air purifier to clean a room? ›

An air purifier can completely clean the air in the room in 30 minutes to 4 hours. This may seem like a wide range, but there are a lot of varying factors such as room size, ceiling height, CADR, pollution rates, and more.

What do hospitals use to purify the air? ›

In hospitals and healthcare facilities, HEPA filtration is a powerful weapon against the particulates and biological contaminants that can harm and kill. HEPA filters are key to maintaining pure air.

Where should I put my air purifier in my bedroom? ›

The best place to put an air purifier is somewhere in your breathing zone. The closer the unit is to your head, the shorter distance clean air has to travel before it reaches you. In the bedroom, this usually translates to putting the air purifier on a nightstand or small table close to the bed.

What do doctors say about air purifiers? ›

Another study found that indoor HEPA air filters improved respiratory health in those with asthma. However, doctors don't have any long-term data that points to air purifiers reducing strokes, heart attacks or death rates.

Do air purifiers increase electric bill? ›

Air purifiers increase electric bills by 3.2% (i.e. $3.69 per month), on average. The average US monthly electricity bill is $115, so an increase to $118.69 is not substantial. This increase, however, is based on the average cost to run the most energy efficient air purifiers.

How much does a decent air purifier cost? ›

That Clean Air Will Cost You
ModelPriceFilter Cost
Alen Breathsmart$600$104
Blueair Blue Pure 211+$300$140
GermGuardian AC5900WCA$185$175
Honeywell HPA300$250$127
1 more row
25 Oct 2019

How much does it cost to run an air purifier 24 hours a day? ›

Fortunately, air purifiers do not consume a huge amount of power. Most HEPA air purifiers utilize a low amount of energy - around 50-100 watts of energy every hour based on the airflow speed. So, even with a 24-hour operation, the monthly energy bill would amount to around $6-10 each month.

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