Top 10 Best Air Purifiers in 2020 (Final UPDATE)

This is the ultimate review to find out what are the best air purifiers to buy for your home or your office.

Yes, you’re in the right place!

Let’s not waste countless hours searching through any other websites just to find the top rated air purifiers that fit your specific needs. Because in Breathe Quality:

  • We do give honest reviews (both pros and cons) and a base comparison for all the air purifiers so anyone will guarantee to have the wisest choices.
  • We do not (and we never) exaggerate one product just to let you click the links and buy that product blindly.
  • The list of best air purifiers is updated regularly. We need at least 2 weeks of continuous running to guarantee the best performance of one air purifier. If one new air purifier is released, we will keep updating our list. You will never find an outdated air purifier here.

On this page, you’ll find everything you need to quickly make the right decision on which air purifier to get in 2020. Our best air purifier 2020 list has updated dramatically thanks to our work of testing more than 100 new air purifiers in the last year, for a total of 300+ air purifier reviews in our labs. If you’re considering buying a new air purifier, keep in mind that our list is the most up-to-date one to serve you.

Update: This is the UPDATE on 05/07/2020, to help you select the best air purifier in 2020. We add the new Blueair Classic 680i, which shook up our rankings with some rare Smart features to be found in high-range.

In Breathe Quality, we’re constantly updating our posts, to make sure you’re buying the best air purifier on the market. We believe that you don’t need to wait for the next update, because we‘ve tested every aspect of each air purifier in this best air purifiers list – that way we can make very clear recommendations of each air purifier’s strengths and who they would be perfect partners for.

Picking up one of these top-tier devices is an expensive investment, as some of these air purifier prices start at $500, so you’ll want to take your decision seriously. But don’t worry: we’re here to guide you through the ins and outs of each…along with our professional opinion about where they rank compared to each other. Believing that air purifiers are for everyone, we will give you the best air purifiers in all price ranges. To know the exact price of one air purifier, just hit the Check price button.

Our idea of the best air purifier has a top-notch air purifying performance, yet is economical and safe to use. Most devices are certified and tested strictly by many governmental organizations like the Energy Star (under U.S EPA), AHAM (Association of Home Appliance Manufacturers) or/and CARB (California Air Resources Board). You won’t find weak and unsafe air purifiers with high cost to use on this list.

We know that not everyone has time to find, research, check reviews and ratings of air purifiers from a huge ton of websites. Therefore, this page aims at helping you, yes you, find the right air purifier for your needs in a quick and efficient way. We have read many other reviews in the whole Internet and rather find them outdated (some were written 2 years ago), or just sorted the most expensive or most popular air purifiers in top for the maximum benefits. Well, we never do it.

We promise, our wish is nothing but your healthy life!

Other helpful lists of best air purifiers you should read:

We hope this list of the top rated best air purifiers in 2020 is exactly what you’re looking for and that it not only saves you time trying to find the right device but also helps you get the most value for your money! Thank you!

Base Comparison Table of Top 10 Best Air Purifiers in 2020

This Comparison Table of best air purifiers will help you have a quick overview of our list of Top 10 Best Air Purifiers in 2020. The factors for comparison in this table are the air filter types of this air purifier, we also give the most concerned factors as the room coverage, and the filter replacement of this air purifier for you.

Remember that you should check the review for each air purifier. We will share all the knowledge about the pros and cons of them, also with other products from the same air purifier’s manufacturers. So even if you can’t find your favorite air purifier products in this table, please look up for the review of the same brand’s product. There you will find your favorite best air purifier in 2020 for sure.

ImageNameFilter TypeRoom Coverage (sq ft)Annual Filter ReplacementCheck ReviewCheck Price
best air purifiersRabbit Air MinusA2Advanced BioGS HEPA, Ionizer, Carbon Filter815Rabbit Air FilterRead More
Top 10 Best Air Purifiers in 2020 (Final UPDATE)Levoit Core 300True HEPA Filter, Carbon Filter215Levoit Core 300-RF FilterRead More
Top 10 Best Air Purifiers in 2020 (Final UPDATE)Coway AP-1512HHTrue HEPA Filter, Ionizer, Carbon Filter360Coway AP-1512HH FilterRead More
Top 10 Best Air Purifiers in 2020 (Final UPDATE)Honeywell HPA300True HEPA Filter, Carbon Filter465Honeywell HRF-R3 FilterRead More
Top 10 Best Air Purifiers in 2020 (Final UPDATE)Winix AM90True HEPA Filter, Carbon Filter, PlasmaWave360Winix FilterRead More
Top 10 Best Air Purifiers in 2020 (Final UPDATE)GermGuardian AC9200WCATrue HEPA Filter, UV Light Filter, Carbon Filter335GermGuardian FilterRead More
Top 10 Best Air Purifiers in 2020 (Final UPDATE)AIRMEGA 400True HEPA Filter, Carbon Filter1560AIRMEGA Max2 FilterRead More
Top 10 Best Air Purifiers in 2020 (Final UPDATE)Blueair Classic 680iParticle/SmokeStop filter (HEPA Filter + Carbon Filter)775Blueair FilterRead More
Top 10 Best Air Purifiers in 2020 (Final UPDATE)Alen BreatheSmart 75iTrue HEPA Filter, Ionizer, Carbon Filter1300Alen True HEPA FilterRead More
best air purifierIQAir GC MultiGasTrue HEPA Filter, Carbon Filter1125IQAir HyperHEPA H11 FilterRead More

Top 10 Best Air Purifiers in 2020

1) Rabbit Air MinusA2 – Our 2020 Winner

 Previously in our list:   Rabbit Air MinusA2.

Sitting at the top of Rabbit Air’s current air purifier lineup, the powerful Rabbit Air MinusA2 is the Best Air Purifier in 2020 for most people. It packs everything you would want for an air purifier, while asking a much cheaper price than most other high-end air purifiers.

Let’s see why we consider it the best air purifier system for everyone in 2020.

Rabbit Air is a leader in the U.S air purifier market, currently ranked in the Inc. 5000 magazine as one of the fastest-growing privately held companies in the U.S. The Rabbit Air MinusA2 is their signature air purifier, showing top-notch performance that we mostly see in the high-range segment. This air purifier has vaulted past other competition to become the best air purifier, thanks to the perfect 6-stage purification & deodorization system to make the cleanest, freshest air possible in the world.

  1. Pre-filter – The polluted air must pass through a pre-filter, there it will capture all large particles, along with dust mites and some of pet hair.
  2. Medium Filter – Traps large pollen, pet dander, mold and dust particles that is small enough to bypass the Pre-filter.
  3. Advanced BioGS HEPA Filter – It is a True HEPA Filter that captures 99.97% of all allergens, virus particles, pollen, mold and fungi particles down to 0.3 microns. Rabbit Air advances their air filter process, therefore prolong optimal filter efficiency and filter life of their HEPA filter.
  4. Customized Filter – Double the protection with a variety of customized filters for specific needs like Germ Defense, Pet Allergy, Odor Remover, or Toxin Absorber.
  5. Activated Carbon Filter – Eliminates odors, smokes and chemical vapors.
  6. Ion Generator – The last line of defense is an ionizer to capture even the tiniest particles of pollutant and trap them into other filters. Can be switched on/off.
best air purifier

The ultimate Rabbit Air MinusA2 is standout with 5 different mechanical air filters and one ionizer, which, just going by the specs, is second to none. You should know that common air purifiers only have 2 to 3 mechanical air filters, and even the high-end air purifiers stick with the traditional 3-layer air purification system. In addition, the bottom line is the high quality of each filter in this MinusA2.

Rabbit Air MinusA2 makes use of double the pre-filtration, and both the first pre-filter and Medium filter are able to reduce most common pollutant objects in your home. Plus, the pre-filter is washable, and it can last permanently to serve you.

This double pre-filtration is also part of the exclusive Advanced BioGS technology of Rabbit Air, as it leaves only the ultra-fine particles for the True HEPA filter to trap. Unlike a typical HEPA filter, the Advanced BioGS HEPA filter is coated with an anti-bacterial treatment, to prevent the growth of biological particles like mold spores, viruses and bacteria on the filter. Therefore, it prolongs optimal filter efficiency, so you only need to change the MinusA2’s HEPA filter one every 2 years.

Expert tip: Why do you need a True HEPA filter instead of normal HEPA filter? When do you need to replace it? Find your answer in this article.

To further enhance the air purifying’s efficiency, Rabbit Air MinusA2 has a Customized filter, allowing the users to tailor the air purifier for their personal needs. Each filter (Germ Defense, Pet Allergy, Odor Remover, or Toxin Absorber) is specially engineered to trap and reduce different types of germs, chemicals, odors and allergens. Together with the Activated Carbon filter, made of high-grade granular activated carbon, the Rabbit Air MinusA2 can effectively reduce all types of smoke, chemicals, common household odors and Volatile Organic Compounds (VOCs).

Even with the extra ionizer turning on, we have recorded that the amount of ozone is about 0.002 ppm, which is 25 times less than the 0.05 ppm maximum ozone safety standards set by the California Air Resource Board, so MinusA2 will never irritate asthma and respiratory issues. However, if you don’t like this function, you can easily turn it off with a simple button.

We place the Rabbit Air MinusA2 highest in our best air purifier 2020 list, simply because it offers the best overall mix of features for the money. You can control this air purifier anywhere in your home, thanks to the Wi-Fi capabilities, available on both smartphone’s app and Alexa voice commands. Rabbit Air MinusA2 has both dust and odor sensors, to assure the best air quality anytime, anywhere.

Together with the low annual filter replacement, Rabbit Air MinusA2 is Energy Star rated, with the lowest annual energy cost for its fan power. So to say, you will get a smart long-term investment for using the Rabbit Air MinusA2.

best air purifier

The only downside is, with so many mechanical filters, Rabbit Air MinusA2 just delivers a low CADR rating to protect the fan’s motor. However, with the cutting edge Brushless DC motor, this air purifier is able to keep up with even huge space from 700 to 815 square feet. It is impressively quiet, too, so you can run it even while sleeping.

Here is the pros/cons of Rabbit Air MinusA2:


  • Top-notch performance
  • Advanced air filtration process
  • Smart, stylish design
  • High-end smart features
  • Long-term investment with low cost
  • Ultra quiet operation
  • 5-year warranty

  • Low CADR rating for the price

Review: Rabbit Air MinusA2 Review.

If you don’t have the extra cash to go for the Rabbit Air MinusA2, the Rabbit Air BioGS 2.0 is another powerful air purifier with the BioGS HEPA filter, cutting down to only 4-stage air filtration and a smaller room coverage of 500 square feet. This air purifier doesn’t have the Wi-Fi capability feature, either.

best air purifier

Review: Rabbit Air BioGS 2.0 Review.

Related post: Best air purifiers for baby.

2) Levoit Core 300 – Best Portable Air Purifier under $100

 Previously in our list:   Levoit Core 300.

Fun fact: The Levoit Core 300 quickly becomes the Amazon’s Choice, and beats its own brother – Levoit Vista 200 to be our new best air purifier for under $100.

If you want to get the best budget air purifier that’s trusted by everyone, you are looking right at Levoit. As the most up-to-date air purifier in 2020, the Levoit Core 300 is also the only Levoit’s device strictly tested and certified by the Energy Star, AHAM and CARB to be efficient and safe to use up until now.

Winning Reddot Award and many other world-renowned awards for design, the Levoit Core 300 is the best budget portable air purifier with a powerful air cleaning system.

  1. Pre-filter – This nylon preliminary filter is able to capture large particles of pollutants. You need to vacuum this filter regularly because it is only effective for a short time.
  2. True HEPA Filter – A True HEPA Filter can reduce 99.97% down to 0.3 microns dust mites allergens, virus particles, pollen, bacteria particles. Can be customized:
    • Pet Allergy – For anyone with extreme allergies with pets. Levoit also makes a special version of Levoit Core 300 for this feature: the Levoit Core P350.
    • Toxin Absorber – For areas with high level of smoke, VOCs, or chemicals.
    • Mold & Bacteria – For moisture-heavy environments.
  3. Activated Carbon Filter – It is great at eliminating odors and smoke in your home.
best air purifier

There are loads of things to love about the Levoit Core 300. It has the best True HEPA filter we’ve ever used and costs considerably less than some of its competitors. This original HEPA filter, just like the high-end Rabbit Air MinusA2, can be customized to fit your personal needs. If you have serious problems with allergies and asthma, you shouldn’t skip this air purifier. Its True HEPA filter meets the strict standards to remove 99.97% of dust, smoke, odor, mold spores, pet dander and particles as small as 0.3 microns.

Levoit Core 300 has triple the fan power of old LV-H132, with the CADR rating of 135 cfm in general, rather than the 50 cfm you’ll find on most air purifiers, making air cleaning feel so much faster. It can cover a large space of 215 square feet, verified by the AHAM.

To stay in the competition, Levoit quickly adds the missing Timer and other basic settings to this Levoit Core 300. The best part? As a portable air purifier, the Levoit Core 300 is super quiet. You can also select the Nightlight function to create a perfect bedroom environment for your good night.

Here is the pros/cons of Levoit Core 300:


  • Customized, high-quality HEPA filter
  • Impressive fan power
  • Clean and compact design
  • Great quiet operation

Review: Levoit Core 300 Review.

Related post: Best air purifiers for bedroom.

If you want to look for an even cheaper air purifier from this company, both the Levoit Vista 200 and Levoit LV-H132 are available to get, and they all have smaller size than the Core 300. Of course, you will sacrifice the efficiency for the more affordable option, and you can’t customize the filter to deal with specific airborne pollutants.

Levoit is also ready to target the higher price range with the Levoit LV-PUR131 and Levoit LV-H133. These air purifiers introduce some high-end smart features that you couldn’t get for only under $200 in an ordinary air purifier, while being incredibly competitive with a recent drop in price. Both air purifiers offer the desired Smart Sensor, that we can’t have in a budget option like Levoit Core 300.


1, Levoit LV-H133 Review.

2, Levoit LV-PUR131 Review.

3, Levoit Vista 200 Review.

4, Levoit LV-H132 Review.

3) Coway AP-1512HH – Best for Performance and Value

 Previously in our list:   Coway AP-1512HH.

Coway is holding the No.1 position on the South Korea air purifier market in 2020, and this is one of the best air purifier companies in the world, beating Samsung right in the domestic market for air purifiers alone. The most favorite Coway AP-1512HH is the top pick selected by a lot of reputable reviewers for its amazing performance and high value for the money.

So, why is Coway Mighty Air Purifier AP-1512HH so highly rated in almost all reviewer websites?

Mainly due to this important 4-stage air filtration:

  1. Pre-filter – A washable pre-filter will help you capture the large particles of contaminants, from pet hair, human hair and mold.
  2. Activated Carbon Filter – This filter works its best to deodorize and trap harmful gas to keep your place fresh and odor-free.
  3. True HEPA Filter – The high-performance composite True HEPA Filter that captures 99.97% down to 0.3 microns allergens, virus particles, pollen, mold and fungi particles.
  4. Ionizer – Vital ionize can trap even the tiniest airborne particles and send it back to other filters. Can be switched on/off.
best air purifier

Coway AP-1512HH‘s performance is of a very high standard, going head-to-head with even any air purifiers in the $300-$400 range, such as Oransi Max or Rabbit Air BioGS 2.0. It could handle everything we threw at it, while keeping a low cost that is recommended for anyone on a tight budget.

The unique selling point of this Coway AP-1512HH is the impressive Eco Mode, to shut down the fan when it detects no air pollution, which is perfect for saving energy. As an Energy Star rated air purifier, the Coway AP-1512HH is meant for long-term investment, with both low annual filter and energy costs.

It has a Smart Sensor, to automatically adjust the airflow speed based on the air quality status. The room coverage of this air purifier is impressive with 360 square feet, based on 4 air changes per hour rating. With such power, it is reasonable why the Coway AP-1512HH has won a lot of certificates and awards, including the British Allergy Foundation Seal of Approval.

One of the few things we didn’t take much of a shine to is the display light on the top, as it is too bright and can’t be turned off. If you are sensitive to light when sleeping, perhaps you need to cover the top light.

Here is the pros/cons of Coway AP-1512HH:


  • Amazing performance rating
  • Super low cost for maintenance
  • Compact size and lightweight
  • Great fan power
  • 3-year warranty

  • The top light can’t be turned off

Review: Coway AP-1512HH Review.

Related post: Best air purifiers for dust.

You can also look for the Coway AP-1216L, which is the tower air purifier of this Korean manufacturer, which shares basically the same technology with the Coway AP-1512HH, but with a few cuts in additional features and actual performance rating. Still, if you only want a tower air purifier with a small base, the Coway AP-1216L is good to go for.

In addition, if you want to taste the high-end features of Coway AIRMEGA lineup, you should search for the Coway AP-1512HHS. It adds the Wi-Fi capability to the Coway AP-1512HH for just an extra cash.


1, Coway AP-1512HHS Review.

2, Coway AP-1216L Review.

4) Honeywell True HEPA Allergen Remover HPA300 – High Performance Rating

 Previously in our list:   Honeywell HPA300.

Honeywell is not just an air purifier brand. In fact, this Fortune-100 company invents and manufactures technologies for a lot of world’s challenges like energy, security, productivity and so on.

Honeywell HPA300 is a powerful air purifier to get in the low-range budget. There’s no doubt about that, this air purifier is certified by the Energy Star and California Air Resources Board (CARB) to be very efficient.

  1. Pre-filter – The pre-filter has Activated Carbon filter in it. This will both help adsorb VOCs, gases, odors and traps larger particles.
  2. True HEPA Filter – The powerful True HEPA filter can capture up to 99.97% of as small as 0.3 microns pollutant particles like pet dander, mold, viruses, bacteria and pollen.
best air purifier

A special mention that Honeywell is using the best True HEPA filter technology in the world. With only one layer of True HEPA filter, Honeywell HPA300 is still on par with Coway AP-1512HH in terms of power. As we can see below, this True HEPA filter is capable of capturing the 0.005 microns viruses.

best air purifier

To reduce the size of this air purifier, Honeywell has combined both the pre-filter and activated carbon filter. However, this pre-filter needs to be replaced after 3 months. This is a big minus to Honeywell HPA300 because of the high filter replacement cost.

While standing in the low-range segment, Honeywell HPA300 utilizes a very high fan power, as well as fantastic CADR and ACH ratings that even surpass any mid-range air purifiers. As a result, this machine can handle a very large area up to 465 square feet, verified by the Association of Home Appliance Manufacturers (AHAM).

This air purifier is clearly for anyone who just wants pure performance of air cleaning, but doesn’t cost a fortune like any Austin Air or AllerAir devices. That’s why Honeywell HPA300 lacks the important Smart Sensor, and you need to manually control this air purifier.

Our verdict is Honeywell HPA300 is still one of the best air purifiers we’ve put through its paces to date, earning even good reviews praising its build and performance versus cost.

Here is the pros/cons of Honeywell HPA300:


  • High performance rating True HEPA Filter
  • Unmatched fan power for the price
  • Large room coverage
  • 5-year warranty

  • Lacks of Smart Features
  • Noisy

Review: Honeywell HPA300 Review.

Related post: Best air purifiers for allergies.

The Honeywell HPA300 is capable and powerful, but if you only need an air purifier for a smaller room, Honeywell provides a variety of selections for air purifiers, being the smallest Honeywell HPA100 (with 155 square feet) or the medium Honeywell HPA200 (with 310 square feet).

Basically, all Honeywell’s products share the same technology, only with the difference in the size and the room coverage. So before purchasing any Honeywell’s products, please check your room’s area again. If you want the smart features, you should look for the Honeywell HPA250B or the Honeywell HPA8350B.


1, Honeywell HPA8350B Review.

2, Honeywell HPA250B Review.

3, Honeywell HPA200 Review.

4, Honeywell HPA100 Review.

5) Winix AM90 – The Best Budget Smart Air Purifier

 Previously in our list:   Winix AM90.

For the Winix, this is a must-look brand when looking for an air purifier in your home. With more than 15 years experience in the U.S market, the Korean-based brand is the ultimate solution for any kinds of pet allergies, packing with the high-end tech for a surprisingly low price. Of all the Winix air purifiers on the market at the moment, the Winix AM90 is the most affordable smart air purifier you can get right now.

Being certified by the Energy Star, AHAM and CARB for its great performance, the Winix AM90 delivers the exclusive air filtration system made only by the South Korean company.

  1. Pre-filter – The polluted air must pass through a built-in pre-filter. This pre-filter will help capture the large objects of contaminants, such as pet hair and even some kinds of pet dander and skin.
  2. Activated Carbon Filter – The air filter can adsorb household odors from cooking, pets, and smoke and reduce VOCs.
  3. True HEPA filter – The True HEPA Filter that captures 99.97% of as small as 0.3 microns allergens, virus particles, pollen, mold and fungi particles.
  4. Winix PlasmaWave – The exclusive Winix technology to safely destroy the pollutants. Can be switched on/off.
best air purifier

Winix AM90 features the unique technology of Winix – PlasmaWave, to produce both positive and negative ions (in plasma state). Then it will generate the Hydroxyls to neutralize any kinds of airborne pollutants such as viruses, bacteria, germs, odors, and chemical gases (VOCs). This technology can basically kill even the tiniest biological particles, as small as 0.1 microns.

The combination of both True HEPA Filter and PlasmaWave technology is the reason why this Winix AM90 is so powerful against most toxic contaminants. Moreover, not like the ionizer filter, the PlasmaWave won’t irritate asthma and respiratory issues. That’s why PlasmaWave is considered the safest technology to combat with the smallest bacteria.

Mix these air filtration systems all together and throw in a high fan power, and you come out with an air purifier that can cover 360 square feet without any problem. The Winix AM90 is verified by the AHAM, and it matches the performance with both Coway AP-1512HH and Honeywell HPA300 in the same price range.

But the headline act is the Smart features, which is the reason to buy the Winix AM90 over other air purifiers. You can control this air purifier via Wi-Fi, both by your smartphone and Alexa’s voice commands. Also, you will have a Smart Sensor, to adjust the fan speed accordingly to the environment’s need.

Here is the pros/cons of Winix AM90:


  • Fantastic performance rating
  • Unique PlasmaWave technology can safely kill viruses
  • Available Smart features on a budget
  • Impressively quiet

  • Possible problem with Wi-Fi connection

Review: Winix AM90 Review.

Related post: Best air purifiers for pets.

You can both find the Winix 5300-2 and Winix 5500-2 with more appealing price, but you should know that these air purifiers don’t have an advanced pre-filter like the Winix AM90, so the ability of trapping odors and chemicals is a bit lower.

The new Winix C545 is available, and with many smart features like the Winix AM90, it could be a good alternative. However, it seems the air purifier isn’t from the official dealer of Winix America, so the Winix AM90 is still a safer option, because it is shipped and sold by Amazon.

Or if you are not a fan of the Wi-Fi Enabled air purifiers, you can look for the Winix HR900, which is our best air purifier for pets in 2020. This air purifier has a specialized pre-filter for pet hair and dander, but it costs a bit more than Winix AM90, while doesn’t have the wireless internet capabilities.


1, Winix 5300-2 Review.

2, Winix 5500-2 Review.

3, Winix C545 Review.

4, Winix HR900 Review.

6) GermGuardian AC9200WCA – Best UV Light for Killing Viruses and Bacteria

 Previously in our list:   GermGuardian AC9200WCA.

As an U.S brand for manufacturing only high-quality air purifiers, the Guardian Technologies is making a lot of good to great air purifiers using UV-C light filtration technology, which is able to render the mold spores, viruses and bacteria useless. Among many devices, the GermGuardian AC9200WCA is the most powerful flagship, with many certifications of the Energy Star, AHAM and CARB for high performance, energy efficiency and safety.

  1. Pre-filter – A normal pre-filter screen that can capture large dust particles and pet hair, mostly to help extend the True HEPA filter life.
  2. True HEPA filter – GermGuardian AC9200WCA uses True HEPA filter to filter up to 99.97% of as small as 0.3 microns particles like household dust, pet dander, mold spores and plant pollen.
  3. Activated Carbon Filter – The Activated granular carbon filter reduces odors from pets, smoking, cooking along with harmful VOCs emitted from a variety of household products and chemicals.
  4. UV-C Light – The latest GermGuardian UV-C light bulb to kill germs without the use of chemicals and produces no ozone or chemical sprays. It can also kill airborne bacteria, viruses and mold spores.
best air purifiers

If you are facing problems with the viruses, bacteria and mold spores – which are the biological contaminant particles, traditionally, we’d be pointing you towards an air purifier with UV-C light filter. The UV-C light, which is harmless to us, can work with titanium dioxide and disrupt the core DNA of the germs and viruses, and destroy them totally.

GermGuardian AC9200WCA doesn’t only have this UV-C bulb to be efficient, the device also features the high-quality and superb True HEPA filter and Activated Carbon filter. Its jaw-droppingly good performance is associated with a high CADR-rating fan power, verified by the AHAM. Through many rigorous tests, we can confirm the fan power of this GermGuardian AC9200WCA is even better than the Rabbit Air BioGS 2.0.

Certain aspects of the device can’t compete with some of the other high-ranking air purifiers in our best air purifier 2020 guide, such as the lack of Smart Sensor, or out-and-out brand desirability.

Here is the pros/cons of GermGuardian AC9200WCA:


  • Great performance rating
  • Powerful air filtration process
  • Amazing power against viruses and mold spores
  • High CADR-rating fan power
  • 5-year warranty

  • No Smart Sensor
  • A bit more expensive

Review: GermGuardian AC9200WCA Review.

Related post: Best air purifiers for mold.

The Guardian Technologies is the leader in low-range budget air purifiers. For the price, the GermGuardian AC4825GermGuardian AC4300, and GermGuardian AC5250PT are the top choices to pick. All of these air purifiers are tower devices, with nearly the same power and performance. To tell the difference, we recommend you to check their reviews on Breathe Quality.

If you are looking for the best alternative to the GermGuardian AC9200WCA, perhaps the GermGuardian AC5900WCA is the most suitable option. It is also verified by the AHAM, with a bit lower performance and smaller room coverage than the flagship, but it is also cheaper.


1, GermGuardian AC5250PT Review.

2, GermGuardian AC5900WCA Review.

3, GermGuardian AC4825 Review.

4, GermGuardian AC4300BPTCA Review.

7) AIRMEGA 400 – Best Bang for the Buck

 Previously in our list:   Oransi EJ120.

AIRMEGA is the lineup of Coway‘s most expensive air purifiers, and the big perk is that it comes a with high-end Max2 air filter that does improve the performance while emitting no ozone. The AIRMEGA 400S is by far the flagship of Coway, but the standard AIRMEGA 400 backs almost all the same top-end features into a lower price tag. Let’s take a first look at the powerful air filtration system of this AIRMEGA 400:

  1. Pre-filter – A powerful washable pre-filter is available to help you capture large objects of contaminants. Remember to dry the pre-filter in the shade before re-installing it.
  2. Max2 filter – A combination of both Activated Carbon Filter and True HEPA filter, this filter can both capture up to 99.97% of airborne particles 0.3 microns. It also reduces more than 99 percent of Volatile Organic Compounds and reduces fumes such as NH3 and CH3CHO.
best air purifier

AIRMEGA 400 inherits the patented high-quality True HEPA filter from Coway, and forms it into an all-in-one Max2 filter for simple installation. Coway removes the ionizer completely, to guarantee an ozone-free air purifier, which is also certified by the California Air Resources Board (CARB).

The AIRMEGA 400 is a great air purifier itself, and it isn’t shadowed by its Wi-Fi siblings, thanks to the poor attempts at making application by Coway. We recommend you to buy the non-Wi-Fi version for a much lower price, while maintaining the high-end specs.

This air purifier is suggested to be used in an up to 1560 square feet by the manufacturers, and yes, AIRMEGA 400 has a truly high fan power with CADR rating of 340 Dust/ 350 Smoke/ 400 Pollen (cfm). Moreover, it is certified by the Energy Star, so you can run the device 24/7 without worrying about the electricity bill.

Though it doesn’t have the Wi-Fi connection feature, AIRMEGA 400 still has a Smart Sensor to help you just set it and forget it. The sensor can give feedback on the air quality indicator, as well as adjust the fan automatically to match the environment’s needs.

Here is the pros/cons of AIRMEGA 400:


  • Top-notch performance rating
  • Well-built with highest quality materials
  • Remarkable Technology and Fan Power
  • Impressive quiet
  • 3-year warranty

  • High cost filter replacement

Review: AIRMEGA 400 Review.

Related post: Best large room air purifiers.

The AIRMEGA lineup of Coway has only air purifiers for mid-range to high-range, and they all run with high fan power. The AIRMEGA 400 can cover 1560 square feet, while the AIRMEGA 300 drops to only 1256 square feet. Luckily, their price points all drop down at the moment, so you can get the top-class flagships much easier.

Review: AIRMEGA 300 Review.

8) Blueair Classic 680i – A bit more for Ultra Performance

 Previously in our list:   Blueair Classic 605.

If you are still reading, you have already aimed at mid-range to high-range air purifiers. Beside the high-quality air filter, the air purifier is nothing but a powerful fan to suck in the air from your whole room. The more powerful the fan is, the more expensive your device will be.

Blueair is a powerhouse in the air purifier industry, marking 20 years in this market. It is not a surprise if you have heard the well-known name of Blueair. Right now, the Blueair device that impresses us the most is the Blueair Classic 680i. Let’s look at the powerful air filtration of this machine, which is completely safe for being complied with CARB’s standard.

  1. Particle/DualProtection filter – You can choose from the Particle Filter with the power to capture 99.97% of pollutants such as pollen, dust, pet dander, mold spores, viruses and bacteria down to 0.1 microns. Otherwise, you can pay more for DualProtection Filter, which is most likely the combination of True HEPA filter and Activated Carbon filter.
best air purifier 2020

It is the trend that high-range air purifiers come with only one alone air filter, to help the users install quicker and easier. By combining both mechanical and electrostatic filtration, the Blueair Classic 680i has high efficiency against even as small as 0.1 microns airborne particles. Moreover, with the DualProtection air filter, made of high-porosity coconut carbon, Blueair Classic 680i can adsorb most of the common gaseous pollutants like Volatile Organic Compounds (VOCs), traffic exhaust, smog, odors, and smoke.

The Blueair Classic 680i features the Smart Sensor, which was lacked in the previous Classic 605. Still, this air purifier is the flagship of the well-known Classic series in the Blueair family. It is certified by AHAM to clean a room of 700 square feet with very high fan power: 400 Dust/ 450 Smoke/ 450 Pollen (cfm). As high fan power as the Blueair Classic 680i is, it is energy efficient with a certification of Energy Star. Believe us, this air purifier has a much better performance/energy rating than any members in the Blueair family.

Blueair not only focuses on the performance of their air purifiers, but also improves the Smart features for their modern machines. Blueair Classic 680i makes use of a perfect Wi-Fi enabled connection. By downloading the Blueair Friend app and connecting it to the Classic 680i, you can control this air purifier using an Android or iOS smartphone. Moreover, Blueair Classic 680i is compatible with Alexa.

If you want to put a stop to your allergies and asthma symptoms, this is one of the best deals you could get.

Here is the pros/cons of Blueair Classic 680i:


  • World class performance rating
  • Wi-Fi Enabled Connectivity feature
  • New Smart Sensor
  • Peak technology to reduce the noise level and maximize the air flow
  • 5-year warranty

  • DualProtection filter gives off odors

Review: Blueair Classic 680i Review.

In the Blueair Classic family, we will have air purifiers from all ranges of room coverage. The Blueair Classic 280i can cover only 280 square feet, while the Blueair Classic 480i is able to clean any room within 434 square feet. If you don’t need a giant air purifier for extra-large rooms, you should select these air purifiers instead of the Blueair Classic 680i.

Also, we are happy to show you the Blueair Sense+, an eye-catching expression of modern style. With the well-known technology of Blueair, you will have a Blueair Classic in a more modern design but smaller room coverage (only 186 square feet).


1, Blueair Classic 480i Review.

2, Blueair Classic 280i Review.

3, Blueair Sense+ Review.

4, Blueair Classic 605 Review.

9) Alen BreatheSmart 75i – Best for Customer Service

 Previously in our list:   Alen BreatheSmart 75i.

As the upgraded version of last year’s best air purifier – the Alen BreatheSmart, the Alen BreatheSmart 75i is the best flagship of the Alen company, also earned the Consumer Digest’s Best Buy. Finally, we have a True HEPA air purifier from this brand, which is backed up by the lifetime warranty policy.

Fun facts: AlenCorp is the only company offering a lifetime warranty. Their motto is “put the customers first”.

Let’s see the 3-stage air cleaning system to meet your needs in the Alen BreatheSmart 75i:

  1. Pre-filter – A washable pre-filter to help capture the large objects of pollutants like dust, pet hair and pollen.
  2. True HEPA Filter – There are 4 types of True HEPA filter for you to choose from:
    • Pure – The standard True HEPA filter of Alen BreatheSmart 75i, which is able to capture 99.97% of as small as 0.3 microns pollutant particles such as dust, dust mites and pollen.
    • Fresh – The next level HEPA filter will improve the first Pure, with the addition of Activated Carbon filter, to deal with the household odors and chemicals. This air filter is necessary for people who are sensitive to VOCs.
    • Pet – Without the Activated Carbon filter, the Pet air filter uses the Alen’s patented Molecular Conversion Powder to ensure heavy pet odors are destroyed at a molecular level.
    • Heavy Odor – Alen BreatheSmart 75i changed the Molecular Conversion Powder in the Pet air filter to make the new Heavy Odor filter, which can remove the household odors from smelly kids/teenagers, kitchen garbage, and other everyday activities.
  3. Ionizer – The ionizer is used to improve the efficiency of this Alen BreatheSmart 75i. Can be switched on/off.
best air purifier

The Alen BreatheSmart 75i is the first time the brand’s True HEPA air purifier was seen as a real rival to the Rabbit Air MinusA2. With 4 different types of True HEPA filter, Alen BreatheSmart 75i is ready to deal with any types of pollutant particles.

It has better fan power than every predecessor sharing its brand, with a large room coverage of 1300 square feet. However, with the WhisperMax technology, Alen BreatheSmart 75i is undoubtedly quiet. This air purifier also generates soothing pink noise – a frequency proven to help you sleep 25% better. A great air purifier for the bedroom, right?

The device is still an absolute looker with 15 panel color options including of white, oak, brushed bronze and stainless, black, rosewood, natural maple and more to match your personal style.

Finally, we will have the high-end features in this air purifier, such as the Smart Sensor with an LED light indicator. It adjusts BreatheSmart 75i’s cleaning power to achieve the best air quality while saving energy and maximizing filter life. That’s why the air purifier also achieves an Energy Star rating.

The fact of the matter is, it doesn’t get much better than the predecessors anymore, because you can get the True HEPA filter for any Alen air purifiers at the moment.

Here is the pros/cons of Alen BreatheSmart 75i:


  • Customized color options
  • Great Air filtration process, with True HEPA filter
  • Well-built with highest quality materials
  • WhisperMax technology – better silence
  • Lifetime warranty

  • High-range cost

Review: Alen BreatheSmart 75i Review.

Related post: Best air purifiers for office.

It is fair to say with around $700, Alen BreatheSmart 75i is the flagship of AlenCorp. Now with the upgraded True HEPA filter of this brand, it is worth a look at its predecessors. The Alen BreatheSmart FIT50 and Alen BreatheSmart are the most capable products, which can cover large rooms from 900 to 1100 square feet, respectively.

For a smaller room, you can choose between the Alen BreatheSmart 45i or the Alen BreatheSmart FLEX. With their lifetime warranty, the customers could believe that their investment will be long-term.


1, Alen BreatheSmart Review.

2, Alen BreatheSmart FIT50 Review.

3, Alen BreatheSmart 45i Review.

4, Alen BreatheSmart FLEX Review.

10) IQAir GC MultiGas – High-range representative

 Previously in our list:   IQAir GC MultiGas.

In this high-range segment, only the bulky machines which can cover a large area have a chance to compete in. IQAir is that giant, with the foundation to be 50 years ago, and one active partner of the American Lung Association.

Let’s look at the product IQAir proudly claim to be the #1 Air purifier for smoke, odors and MCS – IQAir GC MultiGas. This air purifier features four stages of superior filtration as below:

  1. HyperHEPA filter – The first stage of filtration features a powerful pre-filter, which can capture 99% of particles down to 0.3 microns, and 95% of particles as small as 0.003 microns.
  2. Cartridge-based activated carbon filter – Made with the highest quality ABS plastics, this filter can remove VOCs and odors effectively.
  3. Cartridge-based chemisorption – This stage destroys harmful chemicals, such as formaldehyde, by an oxidation process inside a chemically active alumina pellet.
  4. Post-filter sleeve – A post-filter sleeve wraps each gas cartridge to prevent media dust from being released.
best air purifier

Instead of trying to prolong the lifetime of True HEPA filter with a pre-filter, IQAir GC MultiGas implement the HyperHEPA technology to increase the particulate loading capacity by 13%. As a result, your air filter will run for a good one year.

Next, their two cartridge-based adsorptions are responsible for destroying any harmful chemicals in smoke. This process is backed up with an unique 3D UltraSeal no-leakage design to prevent air from escaping back into the room without being drawn through the GC MultiGas filters.

The bottom line is the most powerful, energy efficient New Edition fan. With an astonishing high CADR rating of 300 cfm and up to 776 cfm, IQAir GC MultiGas is a powerhouse in the area of 1125 square feet. Moreover, the new fan design reduces the sound pressure, making this air purifier as quiet as possible.

As a high-end machine, IQAir GC MultiGas also has many smart features like Automated Start, intelligent filter life monitor, Advanced timer and Advanced fan speed selection. This air purifier can be controlled via a remote controller. However, the IQAir GC MultiGas doesn’t have a built-in sensor, so you can’t use the Auto Mode for this air purifier.

For the performance rating of IQAir GC MultiGas, there is no better test than how the IQAir president – Frank Hammes had stepped in a chamber full of smoke within 10 minutes. We don’t dare to test it at home, and we warn you not to try this.

Here is the pros/cons of IQAir GC MultiGas:


  • Perfect performance rating
  • Well-built with highest quality materials
  • Remarkable Technology and Fan Power
  • Extra large room coverage: 1125 square feet
  • Impressive quiet
  • Low power consumption
  • 5-year warranty

  • High-range cost
  • No Smart Sensor

Review: IQAir GC MultiGas Review.

Related post: Best air purifiers for smoke.

If you are a non-smoker, perhaps you should look for the IQAir HealthPro Plus. It is claimed to be #1 air purifier for allergies and asthma. Instead of using an ABS cartridge to adsorb the chemicals and VOCs like GC MultiGas, IQAir HealthPro Plus purifies the air with a normal 3-layer filtration system. The difference is HealthPro Plus is using the next level of HyperHEPA filter (H12/13) to capture 99.97% down to 0.3 microns, and 99.5% of 0.003 microns particles.

Meanwhile, IQAir Atem is one of the best personal air purifiers. This air purifier is small enough to fit in your carry-on, and has perfect size for your work space. If you are convinced by the high-range devices of IQAir, you should check the price right now.


1, IQAir HealthPro Plus Review.

2, IQAir Atem Review.

3, IQAir HealthPro Compact Review.

Buying Guide for Best Air Purifier in 2020

Above is a complete list of the top 10 air purifiers in 2020 that are the most outsell on the market. This guarantees that no matter which one you choose in this top 10, you’ll enjoy a really great long-term investment for your health. If you are still uncertain of why you should have an air purifier, you should have known Air pollution is dangerously high for almost half of the US. Yes, we are not as safe as you think.

Now, you should have read our complete best air purifier’s buying guide to better prepare before giving decisions. You’ll see, we’ve done everything to make sure you don’t make any mistakes.

We hope that this list of the best air purifiers has been a valuable guide for you to help you make a good buying decision.

Here is a buying guide for you to choose the right air purifier:

Choosing the right filter types

The classic Air purifier comes with a HEPA filter. Some may have other filters for specific needs, here are the terminology and definitions:

Pre-filter – An essential feature of air purifiers that use a HEPA style filter. The pre-filter captures large dust and pet dander to help prolong the lifetime of the main filter. Most pre-filters are washable and reusable and last a lifetime.

True HEPA Filter – This is the highest standard air filter you can get for a best air purifier. In order to carry this label, the filter must meet strict regulations set by the United States Department of Energy (DOE) and capture at least 99.97% of particles as small as 0.3 microns. A true HEPA filter needs to be replaced after 6 months to 1 year, and you should use a suitable replacement for your air purifiers.

Activated Carbon (or Charcoal) Filter – This filter can adsorb odorous particles and gases. That’s why it can remove the smells produced by smoke, pets, cooking, chemicals, etc.

Ionic Filter (or Ionizer) – This filter emits negative ions to charge small particles like dust, pollen and bacteria and collect them into a plate.

UV-C Light – The Ultra Violet light destroy bacteria and virus by sterilizing them. The UV-C Light (UV Light type C) is harmless to humans.

Advanced BioGS HEPA Filter – A technology from Rabbit Air, to help prolong the life of the main True HEPA filter.

Permanent HEPA Filter – A technology from Hamilton Beach, to make their HEPA-type filter be cleaned by vacuum, therefore you don’t need to replace their HEPA filter.

HEPA-type Filter – This filter is a lower quality version of a True HEPA filter and doesn’t meet the standards set in place by the U.S. DOE mentioned above.

Choosing the right size air purifier

It is highly recommended to check your air purifier’s size and room capability. The size of an air purifier is varied, and if you do not have room for your new air purifier, it would be a disaster.

Room capability, or how well your air purifier can cover is also a crucial factor. You know, air purifier is not an one size fit all machine. Most air purifier is designed for a small room of 100 to 400 square feet. For a larger room, you will need an additional air purifier or larger coverage one. Otherwise your air purifier will not meet your demands, and cost you much more energy than normal.

Knowing some terminology in air purifier

ACH stands for “Air Changes Per Hour”

The ACH rating, stands for Air Changes per Hour, tells you how many times the device can exchange the air within a room with clean, fresh air every hour. For example, 4X means the device cleans air four times per hour.

Common ACH ratings in best air purifier you’ll see are 4x, 5x, 6x, etc

Remember that the advertised ACH for air purifier is normally when you use the maximum fan speed.

CADR stands for “Clean Air Delivery Rate”

Developed by the Association of Home Appliance Manufacturers (AHAM), CADR, stands for Clean Air Delivery Rate, tells exactly how well an air purifier can clean the air within a particular size room.

For example, an air purifier with a CADR like this: dust/500 cfm, pollen/640 cfm, and smoke/500 cfm (or 500 Dust/500 Smoke/640 Pollen) will normally have a coverage from 700 to 800 square feet.

Knowing your problems and how air purifier fix them

1, To help with your allergies

Each year, about 2000 people are diagnosed with nasal cavity in the United States. Airborne allergens wreak havoc on the immune system and cause many unpleasant symptoms like eye irritation, coughing, sneezing, painful headaches and more.

True HEPA filter air purifiers are the best one for you. Find the best ones in Best air purifier for allergies list.

2, To reduce asthma

One again, you should aim at True HEPA Filter. If you have any problems with ion, stop using your Ionizer filter immediately. Find the best ones in Best air purifier for asthma list.

3, To prevent dust

For better air purifier’s filter life, you should use the one with pre-filter. Air purifier with a HEPA filter will help prevent dust as much as possible. Find the best ones in Best air purifier for dust list.

4, To trap pet hair and dander

All of HEPA air purifiers (especially True HEPA ones) can capture pet hair and dander with no difficulty. Find the best ones in Best air purifier for pets list.

5, To remove smoke and odors

You must look for an Activated Carbon filter (or Charcoal filter) to help remove all the smokes and smells. Find the best ones in Best air purifier for smoke list.

6, To protect your babies in nursery

Babies are born with an immature immune system and have underdeveloped defense mechanisms. However, they breathe in double the amount of air (and polluted air) more than any adults. If one parent has allergies to airborne contaminants, there’s a 25% chance that a child will also be allergic. That’s why you need to find the best ones in Best air purifier for baby List to protect your precious little one.

We hope you have found your best air purifier right now. Thank you for reading.

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