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8 Best Rated Smart Air Purifiers Great for COVID-19 Prevention – Reviews & Comparison


Models Considered


Hours of Research


Experts Interviewed


Consumer Reviews Analyzed

T he air in our house carries all sorts of particles, including dust, pollen, and microorganisms. The air outdoors carries them too, but, as space is open, their density is more reduced. Furthermore, in homes with pets, the situation is aggravated by hair, dander, and odors.

The negative effects of air pollution are no joking matter, and if there’s little that we can do about the issue outside of our homes, we have a higher degree of control when it comes to indoor air quality. According to experts from the US Environmental Protection Agency, your best solution to combat air pollution indoors is through ventilation and removal or poor air quality sources.

Air cleaning systems, namely air purifiers, are the go-to, hands down. Look into purifiers that use HEPA filters since these have the highest efficiency when it comes to contaminant removal, dealing with particles down to 0.3 microns with a minimum proficiency rate of 99.97%. If you are dealing with foul odors too, make sure the product you pick also integrates an activated carbon filter since its main purpose is removing odor-causing particles and chemicals from the air.

So, the answer stands in an air purification system, but what should you choose? While classic-style, simplistic units do the job more than decently, the apparition of smart air purifiers like the products we will review and rate in the following has been a massive game changer. What differentiates these systems stands in the functions and features they are accompanied by and that add not only to their effectiveness but to their ease of use.

These devices come with top-notch technology and can connect to Wi-Fi to transmit data on your phone. They allow you to select fan speed, activate modes, or check the level of pollution in real-time. Most of them are compatible with Alexa, Google Assistant, or Siri. Moreover, they come with strong filtering systems and advanced filtering technologies to cover as many problems as possible.

Are you rather looking for a complex system instead? Then check out the best air purifier and humidifier combo models so that you benefit from clean air while upholding proper moisture conditions indoors.

Top 8 Smart Air Purifiers Compared

Room Coverage
Filtration System
Filtration Efficiency
CADR Rating
Air Changes per Hour

Best Overall
750 – 1,500 sq. ft.
F7 pre-filter, H13 HEPA filter, activated charcoal and alumina gas filter
390 / 290 / 315
2 – 4
AI & AQI monitor; Aeris iPhone and Android app; Child lock; Sleep mode; Smart mode; Filter replacement indicator
775 sq. ft.
HepaSilent technology
500 / 500 / 640
Filter replacement indicator; Alexa compatibility; Wi-Fi connectivity; Timer

Best for Allergies
500 – 1,200 sq. ft.
HEPA filter
Dyson Link smartphone app; Voice control via Amazon Echo; Air Multiplier technology; Filter replacement indicator; Timer; Auto mode; Night-time mode; Triple function – cooling fan, heater, air purifier

Best for Pets
1,560 sq. ft.
Max2 filter
2 – 4
Smart mode; Timer; Air pollution sensors; Smart mode; Filter replacement indicator; Amazon Alexa enabled; Sleep mode; Eco mode

Editor’s Choice
600 sq. ft.
PECO technology
Over 99%
Filter replacement indicator; 360-degree air intake; iPhone and Android app
310 sq. ft.
Fine pre-filter, HEPA filter, activated carbon filter
200 / 200 / 220
Filter replacement indicator; Timer; Auto mode; 360-degree clean air delivery; 70-degree rotation; Smartphone app

Best for Smoke
360 – 900 sq. ft.
3-stage HEPA
Filter replacement indicator; Timer; AirSight technology; Smart auto mode
167 sq. ft.
4-stage HEPA + UV light
108 / 114 / 127
Timer; Air quality sensor; Filter replacement indicator; Smartphone app; Voice control

Save money on upkeep and get yourself a qualitative product for air filtration by opting for a filterless air purifier.

1. Aeris Aair 3-in-1 Pro

Check Price at Amazon

  • Room Coverage: 750 – 1,500 sq. ft.
  • Filtering System: F7 pre-filter, H13 HEPA filter, activated charcoal and alumina gas filter
  • Filtering Efficiency: 99.95% of air pollutants down to 0.1 microns
  • WiFi Compatibility:
  • Works with Alexa:
  • CADR: Smoke 390 CFM/ Dust 290 CFM/ Pollen 315 CFM
  • Noise Level: 35 – 67 dB
  • Energy Consumption: 30 – 170 watts
  • Fan Speed Settings: 6
  • Filter Life: 12 months
  • Air Quality Sensor:
  • Air Changes per Hour: 2 – 4
  • Timer:
  • Filter Replacement Indicator:
  • Energy Star Certification:
  • Casters:
  • Warranty: 2 years

The 2019 Reddot award winner, the Aeris purifier is the champion when it comes to air filter systems with smart features and functions. The Swiss-made product is a mix of breath-taking aesthetics that work with any décor, and effectiveness when it comes to fixing poor air quality. Due to the size area it can handle, a subject we will immediately cover, it works for businesses, conference rooms, and residential use.

Performance Aspects that Matter

Recommended for: Asthma and allergy sufferers, general air quality, homes with pets, odor elimination, reduction of VOCs.

  • Vast area coverage: The standard rating for this model is 1,500 sq. ft., the only entry in our top that comes close to it being the Coway Airmega 400S that has a larger coverage of 1,560 sq. ft. If you opt to place it in a space this large, like the basement, for example, it will produce 2 air changes per hour – one every 30 minutes. Ideally, however, you should use it in a room measuring 750 square feet since it will produce 4 air changes within the hour, one every 15 minutes to be precise.
  • Unparalleled air purification efficiency: Just like our runner-up, the Blueair Classic 605, it handles removing particles down to 0.1 microns in size. Its pollutant reduction rate is 99.95%, so you can breathe easily knowing the air you inhale is almost completely free of polluting particles.
  • Uses efficient filtration media: The H13 HEPA filter sits at the core of this purifier’s hard-to-top effectiveness in air pollution reduction. Aside from this filter, it uses other two media, namely an F7 pre-filter that captures the larger airborne particles, and activated charcoal and alumina gas filter that removes odors and chemicals.
  • Clean air in the whole room: It features 360-degree clean air dispensing. Since it comprises vertical air intake and outflow design, it pulls in air from all directions simultaneously, cleans it using the internal filters, and ejects clean air again in all directions at the same time.
  • Keeps quiet: Regardless of the speed level you pick, what you will notice is that the unit will uphold a quiet operation throughout. Depending on the exact setting you choose, the purifier will produce from 35 to 67 decibels.
  • 100% safe: Since it doesn’t produce any ozone or other by-products, this air purifier is safe for the baby’s room too. Sleep with it on all night long, without worrying that you inhale any health-threatening particles because it doesn’t emit any.
Features and Functions that Set It Apart
  • The filter media it features has an anti-microbial coating. What this coating does is deactivate the viruses and bacteria trapped so that the air is sterilized and safe to inhale even by infants.
  • The companion app is available for iOS and Android alike. By installing it, you can use your phone to change settings and choose modes, create the schedule as you like, and more. Best of all, since your phone is your remote, you can control the unit from wherever you are in the world. This same perk of remote control via the smartphone is provided by other air cleaning systems too, including Dyson Pure Hot + Cool HP02, Molekule Air, LG PuriCare 360, and Germ Guardian CDAP5500B.
  • Features air quality sensors that constantly monitor air quality conditions and provide reports regarding it so that you are always aware of your surroundings.

    If you are interested, you can separately acquire an air quality monitor to keep track of air pollution levels in other rooms, not just the one you keep the Aeris purifier in.

  • Use the Smart mode to keep air quality at its highest without moving a finger. When used in this mode, the unit uses the readings from the air quality sensors to change fan speeds automatically and uphold clean air indoors.
  • Filter status indicator shows when replacement is due. After you substitute the filter media, select filter reset so that the purifier knows new filters have been introduced.
Design and Durability

While modern looking, the design is pretty basic. It works with any décor due to the clean lines and impeccable look granted by the white plastic housing. It’s available in 3 different color options, namely Graphite, Peach, and Stack White. It doesn’t take up a whole lot of space – measures 23.6 inches in height, 14.6 inches in width, and 15.2 inches in depth.

Relocating it is a one-person job since it only weighs 35 pounds. It might lack caster wheels, but this is a minor inconvenience. Filter replacement is as simple as it gets since it features a lift-out filter box. To top it all off, it is backed against manufacturing defects for 2 years from the moment of purchase. As you can see, even the company trusts that this qualitative product won’t disappoint with time.

Aeris Aair 3-in-1 Pro Performance Ratings – Tester’s Feedback
  • Allergen removal: Rating – 10/10
  • Odor removal: Rating – 10/10
  • Bacteria removal: Rating – 10/10
  • Air purification speed: Rating – 10/10
  • Smart features: Rating – 10/10
  • Ease of use: Rating – 10/10

*For the first three tests, those regarding air quality improvement, we used a monitor to compare stats before and after running the Aeris Aair 3-in-1 Pro. Evidently, when it came to odor reduction, we used our olfactory senses in the process too. We also played around with all the features and functions of this air purifier, even went a bit deeper to see how difficult air filter replacement is, all so that we can accurately rate the unit based on all aspects of importance for you, the user.

The Aeris learns your behavior over time, adjusting settings according to what it has learned from your history. After a week of tests and trials, we noticed that it adjusted the running speed to what we previously chose in specific time intervals. That’s why we recommend that you only dabble with the settings for a couple of weeks since the air purifier will learn what you prefer on its own, not requiring your attention from that point on. We spent a bit more time on testing this particular product as opposed to other air cleaning systems, but it was worth the extra effort. It’s very quiet, which is a plus if you plan on using it in the bedroom or office. It reduces air pollution with a speed that few other air purifiers can, so you won’t be a victim of inhaling harmful particles while you sit in the comfort of your home. Moreover, it excels when it comes to odors, allergen, and bacteria reduction, guaranteeing that air purity will be at an all-time high once you start using this device.

Lilian Davies

  • Filter media features an anti-microbial coating that handles deactivating viruses and bacteria
  • Can remove particles down to 0.1 microns in size
  • The vertical air intake and outflow ensure the 360-degree spreading of the clean air
  • Control the settings from wherever you are using the proprietary smartphone app
  • Provides indoor and outdoor air quality readings in real-time



With a built-in AI and AQI monitor, and allowing remote control from anywhere in the world via the phone app, the Aair is the definition of a smart air purifier. It even covers large areas, which recommends it for residential use, business use, and conference rooms. Moreover, it does something few other filters can do – neutralize viruses and germs to sanitize the air you breathe.

2. Blueair Classic 605

Check Price at Amazon

  • Room Coverage: 775 sq. ft.
  • Filtering System: HepaSilent technology
  • Filtering Efficiency: 99.97% of air airborne pollutants down to 0.1 microns
  • WiFi Compatibility: compatible with 802.11 b/g/n router on 2.4GHz Wi-Fi Network band. Network security; open, WEP, WPA, & WPA2
  • Works with Alexa:
  • CADR: Smoke 500 CFM/Dust 500 CFM /Pollen 640 CFM
  • Noise Level: 32 – 62 dB
  • Energy Consumption: 15 – 100 watts
  • Fan Speed Settings: 3
  • Filter Life: 6 months
  • Air Quality Sensor:
  • Air Changes per Hour: 5
  • Timer:
  • Filter Replacement Indicator:
  • Energy Star Certification:
  • Casters:
  • Warranty: 1-year

This is a fantastic device that has conquered the customers through its sleek design and high-end features. It is huge and incorporates all the smart functions you could think about, so it is up for some serious work. It is expensive as well, but when you look at its coverage capabilities or CADR ratings, it’s impossible not to understand that it is worth every penny. Apart from that, it is fairly easy to deal with its size, as it comes with casters for easy transportation.

Outstanding Clean Air Delivery Rate

Most air purifiers are efficient in fighting air pollutants, but the question is how fast they can do it. For an allergy sufferer every moment counts and the longer it takes for the device to circulate the air the higher the chance of them getting watery eyes and a runny nose becomes. In this case, a unit that can provide a high CADR is the solution, and this model surely surpasses all:

  • Dust – 500 CFM
  • Pollen – 640 CFM
  • Smoke – 500 CFM

The HEPA Silent technology is more performant than a simple HEPA filter, as it can neutralize 99.97 particles that are bigger than 0.1 microns, while classic HEPA can only deal with particles down to 0.3 microns. However, this filtering system doesn’t incorporate an activated carbon filter, and you will need to pay extra on a DualProtection filter if you want to get rid of odors and smoke.

Tired of having your home smell like an ashtray because of tobacco smoke? Then get yourself a specialized air purifier for smoke and clear those unpleasant smells and nasty chemicals from the air.

Advanced Control

The digital panel is placed on the top of the unit and offers access to all the functions and indicator lights, unlike other units that have reduced the number of buttons once they added a WiFi capability. Thus, even if the internet isn’t working you will get access to a wide array of controls and parameters:

  • Timer – Allows you to set the runtime and reduce energy consumption
  • Night Mode – Lowers fan speed and reduces noise
  • Speed adjustment – 3 speed options
  • Filter replacement indicator – Will activate when the filter needs to be changed, at about 6 months from the last replacement

It needs a steady 2.4 GHz connection to pair with Alexa and allow for voice control. However, it lacks an auto mode, which is a shame as all its competitors include it. But it is energy efficient – 15 and 100 watts – and can cover spaces measuring up to 700 square feet, which is truly a performance.

Whisper-Quiet Operation

Incredibly, it produces only 32 decibels at the lowest speed. At the highest speed it gets louder, but with its capacity, you won’t need to select it too often. Furthermore, as it comes with a Night mode, you can easily program it to keep it quiet while you recharge your batteries.

  • Energy Star certified
  • High CFM makes it suitable for polluted environments
  • Low noise level
  • Works with Alexa
  • Efficient filtering technology

  • Lacks an Auto mode
  • Only 1-year warranty


It is the best smart unit you gen get for your house at the moment. It has a strong CADR rating, multiple smart functions, and can cover extended areas with amazing efficiency. Although it is bulky, it is easy to move as it comes with casters. Plus, it is sleek and will fit in every home, no matter the decorative style.

3. Dyson Pure Hot + Cool HP02

Check Price at Amazon

  • Room Coverage: 500 – 1,200 sq. ft.
  • Filtering System: HEPA filter
  • Filtering Efficiency: 99.97 percent of allergens and pollutants as small as 0. 3 microns
  • WiFi Compatibility: 2.4GHz
  • Works with Alexa:
  • CADR: 423 CFM
  • Noise Level: 64 dB
  • Energy Consumption: 1,575 watts
  • Fan Speed Settings: 10
  • Filter Life: 12 months
  • Air Quality Sensor:
  • Air Changes per Hour: 2+
  • Timer:
  • Filter Replacement Indicator:
  • Energy Star Certification:
  • Casters:
  • Warranty: 2-year

A multifunctional device, it combines a fan and a high-end air purifier, perfect for cooling or heating the atmosphere while maintaining the air clean and crisp. Its vast usability makes it superior even to the Aeris Aair 3-in-1 Pro that only functions as an air cleaner, nothing more. It comes with a powerful fan that can cover rooms measuring 500 to 1,200 square feet where it can circulate the air at least 2 times in an hour. The filtering technology is quite innovative, with a glass HEPA filter and a second carbon activated layer.

It flaunts an efficiency of 99.97% in removing tiny particles with a diameter down to 0.3 microns, which is an excellent rate, achieved by all units that use HEPA filters. Nevertheless, the 423 CFM CADR rating isn’t as common, a distinction that makes it the best choice for fighting allergies. With such a high cleaning rate, the pollen, dust, or bacteria won’t have time to float freely around the room and cause sneezes and watery eyes.

Regarding power consumption, you must assume that this isn’t a simple air purifier, but a fan, so it is impossible to get the low rates offered by other units. The truth is that it draws a maximum of 1,575 watts and isn’t energy effective. But the airflow is strong, and you will be able to enjoy a cool atmosphere during the summer and a nice warmth during the winter. Plus, due to the Jet Focus control, the airflow can be directed towards a single direction so you can concentrate all the coolness/warmth on yourself.

The design is modern, with the air being drawn from the base of the unit with a 360-degree intake and being released through the top for maximum efficiency. At the base, you will find the digital panel, which is simple and elegant, as all the functions have been transferred to the app. Nevertheless, it allows you to turn on/off the unit, check WiFi strength, and the temperature in the room. On the other hand, once you connect it to the app, you will be able to monitor not only the temperature but humidity as well and get access to speed settings, which are no less than 10. Moreover, it features a pollution sensor, which works with the Auto mode to adjust speeds according to the quality of the air in the room. This means that when the level of pollution is high, the fan will work harder to reduce it.

The filter is easy to remove and can last for a full year, so you will cut a bit on filter replacement costs. You can set the timer to power it off after a certain time to reduce energy consumption or just run it at a slower speed, which will reduce the noise as well. At 64 decibels, it is rather noisy, so unless you are a white noise enthusiast, we wouldn’t recommend placing it in a bedroom. Still, you will be able to control it from your bed, as it is compatible with both Alexa and Siri.

The best way to prevent allergies is by cutting their source. Find more air purifiers for allergies and asthma in our top, which includes only high-rated models with excellent CADR ratings.

  • Heating and cooling function
  • Huge CADR rating
  • Works with Alexa and Siri
  • Highly customizable with up to 10 speed settings
  • Air quality monitoring function

  • High energy consumption
  • The app crashes frequently


Perfect for the summer and perfect for the winter, it offers a complete package. Both the fan and the purification functions are performant in large spaces and can be controlled from the distance through Alexa, Siri, or a phone app. It has a high consumption rate, but you must consider that you get 2 appliances in one. Plus, it comes with a good 2-year warranty that will save you of supplementary expenses in case a mishap shall occur.

4. Coway Airmega 400S

Check Price at Amazon

  • Room Coverage: 1,560 sq. ft.
  • Filtering System: Max2 Filter
  • Filtering Efficiency:up to 99.97% of particles 0.3 microns in the air; 99% of volatile organic compounds
  • WiFi Compatibility: 2.4GHz
  • Works with Alexa:
  • CADR: 350 CFM
  • Noise Level: 22 – 52 dB
  • Energy Consumption: 66 watts
  • Fan Speed Settings: 4
  • Filter Life: 12 months
  • Air Quality Sensor:
  • Air Changes per Hour: 2 – 4
  • Timer:
  • Filter Replacement Indicator:
  • Energy Star Certification:
  • Casters:
  • Warranty: 5-year

Coway’s smart Airmega is expensive, but also the best when it comes to handling large spaces or heavy pollution. Its special Max2 filter, which mixes a True HEPA and a carbon activated filter, has an efficiency of 90% at neutralizing volatile organic compounds, and up to 99.97% when it comes to small particles down to 0.3 microns. The performance is specific to any HEPA-based air purifier, but what makes it even more effective is the 350 CFM airflow, which can cover spaces as large as 1,560 square feet.

It is a great pick for homes with pets as it can circulate the air in the room for 2 to 4 times in an hour, thus maintaining the space free of floating hair, dander, or smells. It offers 4 fan settings, namely Low, Medium, High, and Turbo, but the noise level remains within decent values no matter what you select, with a range of 22 to 52 decibels.

Compared to Coway’s previous smart model, Airmega 300S, this one is larger and more robust. This means that the materials are better, and it is less prone to malfunctions. But it means it is heavier as well, and you will need some strength to lift it, especially as it doesn’t come with casters. With a 360-degree intake, it is better placed far from the wall so it can reach its maximum performance.

The fresh air is delivered through the top of the unit, where you will find the controls as well. As this is a smart device, the number of settings on the unit has been reduced to a power button and a filter light indicator. Nevertheless, you will be able to adjust fan speed, set a timer, or select the Auto mode from your phone. It is compatible with Alexa as well. You just need to ensure a strong 24 GHz WiFi connection.

With a maximum power consumption rate of 66 watts, we can place it somewhere in the middle, especially if we consider the area it can cover. This rate will generate a cost of approximately $24 per year, assuming that you are going to run it for 8 hours every day, which is pretty low. Apart from that, it comes with an Eco mode, which can drastically reduce energy consumption and a timer for runtime customization.

Just like in any Airmega model, the air quality monitoring function is included. Two nice circles on the front side will let you know at any moment how clean is the air you are breathing. But this is not all, as the function has been improved, and now you can keep an eye on the pollution level even when you aren’t in the room.

The special app provides real-time reports and allows for easy customization of the device. Besides all that, we should mention that it comes with an excellent 5-year warranty, which is offered by a manufacturer with over 30 years of experience in the industry, so you can rest assured that it will be promptly honored.

Classical air purifiers can be just as effective in fighting pet hair and odors. See our air purifier for pets comparison and discover more options for your home.

  • Suitable for large rooms
  • The powerful fan can generate up to 350 CFM
  • Long 12-month filter lifespan
  • Generous 5-year warranty
  • Compatible with Alexa

  • Bulky design
  • Issues with the Wi-Fi connection at times


It is an expensive unit, but one of the most powerful and reliable on the market. Although the technology isn’t innovative, it uses only high-quality filters that are top-notch in their class and features an excellent CADR, being able to cover large spaces and quickly remove allergens and odors in homes with pets.

5. Molekule Air

Check Price at Amazon

  • Room Coverage: 600 sq. ft.
  • Filtering System: Photo Electrochemical Oxidation (PECO) nanotechnology
  • Filtering Efficiency: destroys pollutants 1000x smaller than HEPA standard
  • WiFi Compatibility: 2.4GHz
  • Works with Alexa:
  • CADR: 88 CFM
  • Noise Level: 30 – 55 dB
  • Energy Consumption: 20 – 80 watts
  • Fan Speed Settings: 3
  • Filter Life: 6 months
  • Air Quality Sensor:
  • Air Changes per Hour: 4
  • Timer:
  • Filter Replacement Indicator:
  • Energy Star Certification: N/A
  • Casters:
  • Warranty: 2-year

It is innovative, not only through the smart technology but through the purification method, as it doesn’t use a HEPA filter, which is the standard among high-quality air purifiers, but the PECO method to kill bacteria and viruses in spaces measuring up to 600 sq. ft. The filtering system includes a pre-filter and the PECO filter. While the first is common to all models, the second is considered an innovation, so let’s take some time to explain how it works. PECO stands for Photo Electrochemical Oxidation and is an improvement of the Photo Catalytic Oxidation method which was largely used for purification before. Nevertheless, although performant, the previous technology had questionable results regarding its safety.

With this unit, Molekule guarantees that the process is completely safe. It is based on the reaction between the UV-C light and titanium dioxide, which generates hydroxyl radicals. The radicals are unstable, and when they come in contact with the airborne particles, they combine with them and destroy their structure. Thus, bacteria, germs, viruses, and even VOCs are neutralized. Furthermore, according to the manufacturer, it captures particles that are 1000 times smaller than the HEPA standard, so it is a great choice for allergy sufferers.

We have observed that it has an airflow of only 88 CFM, which is rather low compared with the power of other units, so for best results, you may want to use it in a smaller area than recommended, so it can circulate the air more often. The sound is noticeable at the highest speed, reaching 55 decibels, but you can reduce it to 30 decibels if you select the low speed. Regarding the design, we have only good things to say. With a beautiful cylindrical shape and aluminum housing, it will immediately blend in with any décor.

The design favors air intake and increases the purifying speed. On the top side, you will find a digital display that offers quick access to its functions, which unfortunately aren’t many. You can adjust fan speed and check the status of the filter, but you cannot set a timer. Furthermore, it can be controlled from the distance through an app, but not through vocal command, as it isn’t compatible with Alexa or Google Assistant. Plus, it lacks the Auto mode.

The power consumption rate can reach 80 watts at the highest speed, but you can reduce it to 20 watts if you select a lower setting. The filter requires to be replaced every 6 months, but the good news is that the unit arrives with a set that includes the PECO filter and 2 pre-filters. Moreover, the manufacturer can deliver the replacement filters to your address. You just need to place an order on their website. Besides that, you get a 2-year warranty, which becomes active at the date of purchase, so you will be covered against eventual manufacturing flows.

  • Innovative filtering technology
  • Efficient against germs and viruses
  • Beautiful design
  • Sleek touch screen
  • Great 2-year warranty

  • Lacks voice control
  • Low airflow


To summarize, it is an innovative option that has already been tested in real-world conditions and delivered great results. It can fight dangerous microorganisms without generating Ozone or radiations that require you to leave the room during the purification process. Moreover, it is beautifully designed and would make a nice addition to every home.

6. LG PuriCare 360

Check Price at Amazon

  • Room Coverage: 310 sq. ft.
  • Filtering System: Fine pre-filter, HEPA filter, activated carbon filter
  • Filtering Efficiency: 99.97% of air pollutants down to 0.3 microns
  • WiFi Compatibility: 2.4 GHz
  • Works with Alexa:
  • CADR: Smoke 200 CFM/ Dust 200 CFM/ Pollen 220 CFM
  • Noise Level: 25 dB
  • Energy Consumption: 16 – 60 watts
  • Fan Speed Settings: 4
  • Filter Life: 12 months
  • Air Quality Sensor:
  • Air Changes per Hour: 8
  • Timer:
  • Filter Replacement Indicator:
  • Energy Star Certification:
  • Casters:
  • Warranty: 1 year for parts and labor, 10 years for the motor

The way this LG air purifier looks makes you instantly think that it is packed with smart features, which is true. Due to the interesting design, it makes for an irresistible addition to any room, office, or space of any sort as long as it doesn’t exceed the recommended 310 square feet size. Otherwise, the unit will inevitably underperform since it doesn’t have the needed power to handle the volume of air in that space. Per hour, if you use it in the recommended size space, it will perform 8 air changes, so it passes the air through the cleaning stages often enough to keep even the most sensitive individuals feeling healthy. If you want higher coverage, the Coway Airmega 400S is the right option to go with since it’s suited for spaces of up to 1,560 square feet.

It flaunts 360-degree clean air delivery so that even the air at the level of an infant or toddler is free of impurities. It can rotate 70 degrees, ensures a more even distribution of clean air through the room. Using a multi-filter system composed of a fine pre-filter, a HEPA filter, and an activated carbon filter, it tackles a whole range of pollutants, including allergens, smoke, and odor-causing particles, to name a few. Its efficiency rate stands at 99.97%, so it leaves the air in the room clean. When it comes to the type of particles it can handle, since it doesn’t have issues with those measuring down to 0.3 microns, it’s basically able to get rid of most pollutants it encounters.

On the lowest of its 4 speeds, it produces only 25 decibels. Chances are that you will forget it’s turned on seeing how it’s absurdly silent. When filter change is due a gentle alarm turns on to notify you. It features Child lock, so the controls are deactivated and you can only change settings via the app. This way, you keep the kids from tampering with the purifier’s settings. Speaking of the app, it shows you the stats for different pollution issues, namely PM1.0, PM2.5, PM10, and odor. This keeps you aware of conditions at all times, and you can conveniently change the purifier’s settings without being at home. It is compatible with Amazon Alexa and Google Assistant, so you can use convenient voice commands to control the settings. Last but not least, a warranty is awarded for 10 years for the motor, and 1 year for parts and labor.

  • Traps allergens down to 0.3 microns with an efficiency rate of 99.97%
  • Child lock deactivates the controls, so kids won’t be able to tamper with the settings
  • Excels at capturing allergens, which makes it perfect for asthma and allergy sufferers
  • Features a 70-degree oscillation function that you can turn on or off as you like
  • Use the ThinQ app to turn the unit on/off, select the operating mode, create a schedule, and more

  • Replacement filters are expensive
  • Fairly large sized unit


It might be costly upfront and in terms of upkeep, but the LG PuriCare is worth every cent considering the hard-to-top performance in terms of air pollution reduction. The 360-degree clean air delivery ensures the whole room benefits from the same degree of attention, while the multi-filter system ensures no impurity can escape its operation. Add to these aspects the smart features and functions, and it’s easy to see why we praise it so much.


Check Price at Amazon

  • Room Coverage: 360 – 900 sq. ft.
  • Filtering System: 3-stage HEPA
  • Filtering Efficiency:99.97% of harmful germs, dust, pollen, pet dander, mold and other 0.3 micron
  • WiFi Compatibility: 2.4GHz
  • Works with Alexa:
  • CADR: 135 CFM
  • Noise Level: 27 dB
  • Energy Consumption: 40 watts
  • Fan Speed Settings: 3
  • Filter Life: 6 months
  • Air Quality Sensor:
  • Air Changes per Hour: 1+
  • Timer:
  • Filter Replacement Indicator:
  • Energy Star Certification:
  • Casters:
  • Warranty: 2-year

If you are familiar with the LEVOIT LV-PUR131, then you know what to expect from this model, as it is the smart variant on the previous. It is the first smart model produced by LEVOIT, and we must say they did a great job catching up with other brands that have released their smart devices earlier. They added a WiFi Chip and an antenna and thus allowed it to connect to a phone and pair with Alexa. However, the manufacturer didn’t consider it necessary to develop a special app, so you will be using it with VeSync, which is an application developed to ensure the connection between variate smart devices and phones.

It is efficient though and has nice graphics. Apart from that, we should mention that the air purifier can connect only to a steady 2.4 GHz network, so make sure you have it prepared if you want to use the function. The app will provide you access to fan speed control and pollution monitoring. Moreover, you will be able to set the unit to turn on and off at specific hours or set the Auto mode for automatic speed adjustment according to the quality of the air in the room.

On the other hand, for cases when the internet is down, it offers a sleek digital panel, which is placed on the top. A digital screen shows the timer settings and can be manually turned off by touching the key next to the power button. Another nice addition is the Sleep mode, which automatically reduces the fan speed and thus the noise, allowing you to rest over the night. Besides that, it is super quiet at all speeds, not only on the lowest, with a peak sound of only 27 decibels. Not to mention that it is one of the most energy-effective, whit a maximum energy consumption rate of only 40 watts.

Regarding filter configuration, it comes with 3 purification layers, designed to cover large rooms that can measure up to 900 square feet. In this case, it will take an hour to clean the air, which is rather long. The truth is that it functions at maximum capacity in a smaller room with a perimeter of 360 square feet, where it can perform a complete air change every 24 minutes. Plus, the 135 CFM CADR rating isn’t very high, so, despite what the manufacturer says, this is a device for a small space. Nevertheless, it compensates through the filtering technology, as it comes with a True HEPA filter and a huge honeycomb activated carbon filter, which have proven highly efficient in fighting not only allergens but smoke. You will need to replace them every 6 months, though, to maintain this performance, and, as in most cases, they aren’t cheap.

  • Sleek, user-friendly digital panel
  • VeSync app is easy to use and offers access to over 10 advanced features
  • Quiet operations
  • Excellent smoke purification for small rooms
  • Auto and Sleep modes
  • Energy Star approved

  • Although it is advertised for large rooms, it is performant only in small spaces
  • The filter might require replacement more often than advertised


It is backed by a great 2-year warranty, and the manufacturer offers friendly customer support. However, you will want to buy it for its filter combination that has proven efficient in fighting smoke and allergens. The app is easy to understand and allows you to schedule the purifier’s run time. Moreover, it is compatible with Alexa so voice command is available.

8. Germ Guardian CDAP5500B

Check Price at Amazon

  • Room Coverage: 167 sq. ft.
  • Filtering System: 4-stage HEPA + UV light
  • Filtering Efficiency: 99. 97 percent of allergens and pollutants as small as 0. 3 microns
  • WiFi Compatibility: 2.4GHz
  • Works with Alexa:
  • CADR: Smoke 108 CFM/Dust 114 CFM /Pollen 127 CFM
  • Noise Level: 29 – 40 dB
  • Energy Consumption: 60 watts
  • Fan Speed Settings: 5
  • Filter Life: 6-8 months
  • Air Quality Sensor:
  • Air Changes per Hour: 4
  • Timer:
  • Filter Replacement Indicator:
  • Energy Star Certification:
  • Casters:
  • Warranty: 5-year

Germa Guardian is probably the most popular brand in the air purifier industry. Their products are nicely built, with sleek lines and minimalist control panels, and include advanced filters that make them suitable for a wide array of problems. This model comes at an excellent price and features a 99. 97% filtering efficiency for pollutants that have a diameter smaller than 0.3 microns. It uses the power of a HEPA filter to remove dust, smoke, and allergens but comes with a UV lamp as well that can be activated to destroy germs, bacteria, and dangerous viruses like influenza, rhinovirus, or staph.

The titanium dioxide element is highly effective in fighting volatile organic compounds that have been associated with serious illnesses like cancer. Additionally, the device has been provided with an activated carbon layer that can neutralize persistent odors produced by cigar smoke, pets, or cooking. With a pre-filter placed in front of the HEPA, it stops the large particles from reaching the main filtering layer and thus increases its life span, which can reach up to 8 months.

It has been designed for small rooms measuring up to 167 square feet. The fan produces a great airflow, which is reflected by the CADR ratings, namely 127 CFM for pollen, 108 CFM for smoke, and 114 CFM for dust. It features 5 fan speeds and produces a low noise which can range from 29 to 40 decibels, so you can use it in a bedroom or a baby room during the night, as its sound is unnoticeable.

The controls are placed on the top side for quick manual control, but you can operate it from the distance, as it offers both WiFi and Bluetooth capabilities. Two indicators placed on the front side let you know if the WiFi/Bluetooth is activated. You can connect it to your phone through an app and start monitoring the quality of the air in the room.

It features a smart sensor for these measurements which works with the Auto mode to automatically adjust fan speed and quicken the purification process. The app allows you to activate the timer, the UV lamp, or power the unit on and off from the distance. Besides that, it works with Alexa and Google Assistant, so it is more convenient than you would have expected for the price.

In terms of power consumption, it can be considered energy-effective at only 60 watts. If we do the math and assume that you will use it 8 hours a day, every day of the year, the total cost will be around $22 per 365 days, which isn’t a lot. This is why it has been Energy Star approved, as it consumes considerably less than a conventional air purifier. Nevertheless, there are models in this top that have higher capacities and lower consumption, so if you are interested in cutting on costs, you should take a look at LEVOIT LV-PUR131S, which has a maximum power consumption of only 40 watts.

  • UV lamp provides excellent protection against viruses and bacteria
  • The low sound level makes it perfect for bedrooms
  • Wi-Fi and Bluetooth compatibility
  • Works with Alexa and Google Assistant
  • Auto mode and air quality indicator
  • Excellent 5-year warranty

  • Can cover only small rooms
  • Issues with the air quality sensor at times


It is the best fighter against germs and viruses. Not only that it offers a high level of purification through the cutting-edge HEPA filter and activated carbon layer, but it uses UV light to destroy microorganisms that can attack the immune system. Apart from that, although it is built of plastic, it has an elegant design, with a sleek control panel placed on top for easy access. Moreover, just utter ‘Alexa, turn on Germ Guardian.’ and it will immediately start fighting pollution.

Frequently Asked Questions

What is a smart air purifier?
What defines a smart air filtration system is the presence of the latest functions and features that make it more user-friendly and help amplify the efficiency of the air purification process. Some of these elements include Wi-Fi or Bluetooth connectivity, air quality sensors that track air pollution levels, apps that let you remotely control and monitor the purifier and pollution levels at home, and smart running modes that adjust the purification speed according to pollution levels, to name a few.

Are smart air purifiers worth it?
Since these models comprise the most modern features and functions available, all while upholding the same efficiency in terms of air purification as their classic counterparts, they are worth every cent. However, be prepared to spend a bit more on a smart air filtration system since these extra features and functions inevitably make the price tag bigger.

What is the best place to put it?
You should place the unit in an area with a lot of airflow. Do this so that the moving air helps polluting particles get into the filter system quicker and get trapped before clean air will be released back into the room.

Is the Dyson model good for asthma?
Yes, it’s our top recommendation for asthma and allergy sufferers. What makes it so effective against allergens is the HEPA filter it uses that traps particles down to 0.3 microns. Its high efficiency in pollution reduction doesn’t hurt either since it is rated at 99.97%, so chances of impurities lingering in the air after you turn it on are close to zero.

Do they use a lot of electricity?
With most models, this isn’t the case at all. You can generally run the air purifier 24/7 without worrying that the electric bills at the end of the month will be too much to handle.

Do air purifiers make the air dry?
No, these systems don’t impact air humidity levels in the slightest. There are, however, air purifier and humidifier combo models that can indeed make a difference in the sense that they raise moisture levels in the air.

Is an air purifier good for COVID-19 prevention?
While not 100% efficient on its own, a system that features HEPA media can indeed reduce the chances of anyone catching the coronavirus since it reduces airborne pollutants, including viruses.


As you have seen, these models offer excellent control over the quality of the air, and most work with Alexa. Our research implied the evaluation of over 80 products and tens of hours of work. We asked 3 experts to provide us with their pertinent opinions and considered them when ranking the units. Nevertheless, you are probably looking for something specific that can quickly handle your problems. The budget is an important factor as well, so go on and make your own ranking now. A second look at 5 of the most popular models in this top may be of real help.

Best Overall: Blueair Classic 605

It is strongly built and offers Swedish performance, so if you are looking for the most reliable air purifier, we recommend it. You can place it in a large room and let it do its job. Excellent results should be expected as the specifications describe huge CADR ratings and one of the most performant filtering technologies. It is bulky but easy to maneuver, as it comes with high-quality wheels. Plus, it can be controlled either from your phone or through voice commands as it is compatible with Alexa.

Editor’s Choice: Molekule Air

In terms of innovation, it surpasses all its competitors. PECO technology is an improvement both in terms of efficiency and safety. As it has an excellent filtering rate, it can be used in medium rooms to reduce germs. It features a beautiful design, which is practical as well, as it allows a 360-degree air intake, increasing the performance.

Best Smart Air Purifier for Pets: Coway Airmega 400S

All Coway units are known as reliable and powerful, and there’s no exception here. You will find a strong fan that can cover large rooms and fight dander, pet hair, and other tiny particles. Furthermore, as it comes with a carbon filter, you can rest assured that your house will smell fresh, no matter how many pets you decide to adopt.

Best Smart Air Purifier for Allergies: Dyson Pure Hot + Cool HP02

Designed to cover both air purification and seasonal cooling/heating, it includes one of the strongest fans and offers a huge CADR, being excellent for removing allergens in a short time. It has a contemporary design and uses a glass HEPA filter to tackle small particles with a diameter down to .3 microns. Moreover, it is more compact than the other models and comes in two shiny colors.

Best Smart Air Purifier for Smoke: LEVOIT LV-PUR131S

The honeycomb carbon activated filter combined with the True HEPA filter turns this model into a genuine smoke eater. It is quiet and energy-effective and pairs with Alexa for voice control. Nevertheless, you should consider that it works best in small spaces where it can circulate the air more than 2 times in an hour.

Lillian Davies
Lillian Davies
Lillian is a fresh college graduate who has lived in Tucson for most of her life, battling the torrid heat ever since she was a child. She is quite versed in the topic of thermal comfort and what solutions work to make conditions more bearable when the temperatures go haywire, which makes her knowledgeable in the topics she writes about here. Since she is a perfectionist, Lilian always takes time to polish her articles before release, which makes her an irreplaceable part of the team.
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