These smart air purifier reviews walk through five models one at a time, using only what each listing states. We looked at sensors, filter stages, weight, noise and coverage on matching bases.
See also our best smart air purifier and best budget smart air purifier guides. Every pick comes from the makers’ specifications on each Amazon listing, not our own testing, and our Editorial Policy explains how we work. Replace filters on the schedule each maker lists and keep the air intake clear.
Our Top 3 Picks From These Smart Air Purifier Reviews
LG PuriCare 360 smart air purifier with micro particle sensor
- Micro particle sensor reads down to PM1.0
- Lists 429 sq ft at 4.8 air changes per hour
- Color LED indicator on top runs from red to green
Levoit Vital 100S smart air purifier with Pet Mode
- Pet Mode and a U-shaped inlet aimed at airborne pet fur
- Light detection dims the display automatically in the dark
- Pairs with Alexa and Google Assistant
Coway Airmega 400S smart air purifier with Eco Mode
- Covers a listed 3,120 sq ft in 60 minutes
- Indoor and outdoor air readings in the IoCare app
- Eco Mode pauses the fan once air stays clean for 30 minutes
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Smart Air Purifier Specs Side by Side
| # | Product | Key Features | |
|---|---|---|---|
| 1 |  LG PuriCare 360 smart air purifier with micro particle sensor |
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| 2 |  Levoit Vital 100S smart air purifier with Pet Mode |
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| 3 |  Coway Airmega 400S smart air purifier with Eco Mode |
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| 4 |  Winix 9800 smart air purifier with PlasmaWave and True HEPA |
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| 5 |  Dyson Hushjet Compact smart air purifier with MyDyson app |
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1. LG PuriCare 360 smart air purifier with micro particle sensor
Best Overall
- Micro particle sensor reads down to PM1.0
- Lists 429 sq ft at 4.8 air changes per hour
- Color LED indicator on top runs from red to green
- Lists 23 dB at its quietest
- Weighs 14.9 pounds, more than Dyson Hushjet at 6.9 and Levoit Vital 100S at 8.6
- Weight: 14.9 lb
- Coverage: 429 sq ft at 4.8 ACH
- Low Noise: 23 dB
On paper, the PuriCare 360 combines a removable pre-filter, an activated carbon filter and a NanoFiber True HEPA filter. LG lists an average capture of 99.97% for 0.3 micron particles.
Coverage reaches 2,059 sq ft at one air change per hour, or 429 sq ft at 4.8. The body measures 12.4 by 12.4 by 20.1 inches.
Who the LG PuriCare 360 suits
It suits shoppers who want a fine particle sensor and a simple color readout.
Who should pass on the LG PuriCare 360
Skip it if you want voice control, since Levoit Vital 100S lists Alexa and Google Assistant.
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2. Levoit Vital 100S smart air purifier with Pet Mode
Best for Pet Owners
- Pet Mode and a U-shaped inlet aimed at airborne pet fur
- Light detection dims the display automatically in the dark
- Pairs with Alexa and Google Assistant
- Optional Toxin Absorber and Smoke Remover replacement filters
- Levoit says off-brand replacement filters may be unreliable and could damage it
- Weight: 8.6 lb
- Coverage: 1,073 sq ft per hour
- Size: 12.64 x 6.3 x 16.02 in
In rooms up to 222 sq ft, Levoit lists 4.8 air changes per hour. Areas up to 1,073 sq ft get one air change per hour.
Schedules let you set start and end times for a fan speed or for Pet, Auto or Sleep Mode. Sleep Mode brings the fan down to a listed 25 dB.
Who the Levoit Vital 100S suits
It suits pet households that want timed modes and both voice assistants.
Who should pass on the Levoit Vital 100S
Skip it if you want the longest filter life, since Dyson Hushjet lists a filter that lasts up to five years.
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3. Coway Airmega 400S smart air purifier with Eco Mode
Best for Whole-Home Coverage
- Covers a listed 3,120 sq ft in 60 minutes
- Indoor and outdoor air readings in the IoCare app
- Eco Mode pauses the fan once air stays clean for 30 minutes
- Lists 22 dB, the lowest noise figure in this group
- Weighs 24.7 pounds, the heaviest of these five
- Lists Alexa for voice, while Levoit Vital 100S also lists Google Assistant
- Weight: 24.7 lb
- Coverage: 3,120 sq ft in 60 min
- Low Noise: 22 dB
The HyperCaptive system stacks a pre-filter, an active carbon filter and a HEPA filter. Coway lists 99.97% reduction of 0.3 micron particles, plus reduced VOCs and odor.
Smart Mode raises or lowers fan speed with room air quality. Alexa support includes Dash Replenishment, and the unit lists ETL certification.
Who the Coway Airmega 400S suits
It suits whole-home use where one unit covers a large open area.
Who should pass on the Coway Airmega 400S
Skip it if you move the purifier between rooms, since Dyson Hushjet weighs 6.9 pounds.
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4. Winix 9800 smart air purifier with PlasmaWave and True HEPA
Most Filter Stages
- Four stages with a washable pre-filter, carbon, True HEPA and PlasmaWave
- Dual smart sensors drive Auto Mode in real time
- Sleep Mode starts on its own when the room goes dark
- LED indicator shows real-time room air quality
- Measures 16.5 inches wide, wider than the other four picks
- Weight: 19 lb
- Low Noise: 26.2 dB
- Size: 11.8 x 16.5 x 23.2 in
Winix lists a washable fine mesh pre-filter, an activated carbon filter, a True HEPA filter and PlasmaWave air cleaning. The True HEPA filter is listed to capture 99.99% of airborne particles.
The Winix Smart App connects over Wi-Fi for control and monitoring from anywhere. The slowest fan speed is listed at 26.2 dB, and the listing names Amazon Alexa control.
Who the Winix 9800 suits
It suits living rooms where you want automatic sleep switching and four filter stages.
Who should pass on the Winix 9800
Skip it if floor space is tight, since Dyson Hushjet measures 9.06 by 9.06 inches at the base.
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5. Dyson Hushjet Compact smart air purifier with MyDyson app
Best Long-Life Filter
- Dyson lists up to five years of life for the electrostatic filter
- Schedules and personalized air quality reports in the MyDyson app
- Fully sealed design, according to Dyson
- Weighs 6.9 pounds, the lightest of these five
- Lists 203 sq ft at 4.8 air changes per hour, below LG PuriCare 360 at 429 and Levoit Vital 100S at 222
- Weight: 6.9 lb
- Coverage: 203 sq ft at 4.8 ACH
- Size: 9.06 x 9.06 x 18.5 in
Dyson’s 360 degree electrostatic filter is listed to capture 99.97% of pollutants as small as 0.3 microns. A 360 degree activated carbon filter targets pet and cooking odors and gases such as NO2.
In Auto mode, it purifies when it senses a drop in air quality. Dyson says its nozzle shape cuts noise and turbulence.
Who the Dyson Hushjet suits
It suits small bedrooms and offices where you want rare filter changes.
Who should pass on the Dyson Hushjet
Skip it if you need to cover a large room, since Coway Airmega 400S lists 3,120 sq ft in 60 minutes.
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How to Choose the Best Smart Air Purifier for Your Home
- Read coverage on the same basis. At 4.8 air changes per hour, LG PuriCare 360 lists 429 sq ft, Levoit Vital 100S 222 and Dyson Hushjet 203.
- Check filter upkeep. Dyson Hushjet lists a filter life of up to five years, while Levoit Vital 100S has a pre-filter you rinse with water.
- Count the stages. Winix 9800 lists 4, LG PuriCare 360, Levoit Vital 100S and Coway Airmega 400S list 3, and Dyson Hushjet uses 2 filters.
- Weigh portability. Dyson Hushjet weighs 6.9 pounds and Levoit Vital 100S 8.6, while Coway Airmega 400S weighs 24.7.
- Look at night features. Winix 9800 switches to Sleep Mode in the dark, and Levoit Vital 100S dims its display with light detection.
Frequently Asked Questions
Are these smart air purifier reviews based on testing?
No. Each model summary comes from the maker’s specifications on its Amazon listing, not hands-on use.
Which model has the lowest listed noise level?
Coway Airmega 400S lists 22 dB. LG PuriCare 360 lists 23 dB and Levoit Vital 100S 25 dB.
Which models work with Google Assistant?
Levoit Vital 100S lists Alexa and Google Assistant. Coway Airmega 400S and Winix 9800 list Alexa.
Which pick lists the most coverage per hour?
Coway Airmega 400S lists 3,120 sq ft in 60 minutes. LG PuriCare 360 follows with 2,059 sq ft at one air change per hour.
Our Verdict
Our smart air purifier reviews pick is the LG PuriCare 360 for its PM1.0 sensor and color air quality readout. Choose Levoit Vital 100S for Pet Mode and Coway Airmega 400S for 3,120 sq ft in 60 minutes.
Best Overall: LG PuriCare 360 smart air purifier with micro particle sensor Check Latest Price
Best for Pet Owners: Levoit Vital 100S smart air purifier with Pet Mode Check Latest Price
Best for Whole-Home Coverage: Coway Airmega 400S smart air purifier with Eco Mode Check Latest Price
Match each replacement filter to the model number on the listing before ordering.
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