Levoit Vital 100S Review: Compact & Mighty Air Purifier

The best small air purifier. It has plenty of features, uses a three-stage filtration technology, and performs extraordinary in all tests.

Our Verdict





Operating cost


Value for money


Ease of use




The Levoit Vital 100S is one of the best small air purifiers I have tested. It’s a great choice for small bedrooms, kid’s rooms, offices, or any similar place that is under 219 sq. ft. (20 m²).

It has excellent build quality, plenty of advanced features, highly efficient filtration technology, and performed extraordinarily well in all tests. It not only made outstanding results in my regular performance tests but also showed all the benefits of the pellet-based carbon filter and has successfully neutralized bad odors from my kitchen.

With a motor of just 35W, this is such an impressive device with amazing performance and low energy consumption.

I would rank this air purifier alongside the legendary Levoit Core 300S and the Blueair 411 Auto, two of the best air purifiers for small rooms I tested.

Overall, the Levoit Vital 100S is my top recommendation for purchase. However, please consider its coverage and specifications carefully. If you need a device for a larger room, opt for its big brother, the Vital 200S.

What we really like?

  • It uses three-stage filtration technology, including a washable pre-filter, a True HEPA filter, and an activated carbon filter.

  • Based on its performance, the Vital 100S is one of the best small air purifiers I have tested. In a 194 sq. ft. room, it improved the air quality by about 95% in just 60 minutes, which is an impressive result.

  • Low power consumption, a washable pre-filter, affordable price, and long-lasting filters make this air purifier inexpensive to maintain annually.

  • The VeSync smart app provides everything you need to fully control your Vital 100S air purifier: automation, advanced reporting, remote control, smart notifications, and much more.

  • Advanced features include an air quality sensor, air quality indicator, auto mode, and smart app compatibility.

  • It’s ideal for bedrooms, offices, kid’s rooms, small living rooms, or similar small places.

What could be better?

  • I believe Levoit could put a bit more powerful motor in this model, which would result in larger room coverage.

  • It uses an infrared air quality sensor, which may be inferior compared to some other Levoit air purifiers that use laser air quality sensors.


Manufacturer Levoit
Model Vital 100S
Dimensions (inches / cm) 12.8 x 6.4 x 16.1 inches (32.5 x 16.3 x 41 cm)
Weight (pounds / kg) 7 lb (3.2 kg)
Filtration Technology Washable Pre-filter, True HEPA Filter, and Activated Carbon Filter
Filter Life 9-12 months
Coverage (4.8 ACH) 219 sq. ft. (20 m²)
Number of Fan Speeds 5 – Sleep Mode, Low Mode, Medium Mode, High Mode, and Turbo Mode
Noise Level (low – high) 40.5 – 65.4 dBA
Efficiency Test 95% in a 194 sq. ft. room
Power Consumption 35W
Warranty 2-year
User Manual PDF

Full Review

I have confirmed several times, particularly in my latest articles where I mention Levoit air purifiers, that the Vital series is my new favorite. The Levoit Vital 100S and 200S are the best Levoit air purifiers I tested, and I’ve tested almost all of them.

Levoit Vital 100S Air Purifier - Review
Levoit Vital 100S on a small desk. Photo: Airpurifierfirst.com / Milan Antonic

The Vital 200S has earned its place in many guides on my website due to its exceptional performance, great build quality, numerous features, and affordable price. But what if I tell you that the Levoit Vital 100S is almost the same air purifier, but just smaller, with a smaller CADR and room coverage?

This compact model has become my top choice for small rooms, offices, or tables. It doesn’t take up much space, has shown great performance in tests, and has many smart features.

If I still haven’t convinced you of how great this small air purifier is, please sit comfortably and read my full, in-depth review of the Levoit Vital 100S, which includes all the test data, evaluations, and opinions.

Also, don’t hesitate to ask any questions in the comment section located at the bottom of the article.

Setup & Installation

Some air purifiers require complicated preparations before their first use, but that’s not the case with the Levoit Vital 100S. However, you must do a few steps before starting it for the first time.

First and foremost, you need to prepare the filter by opening the front cover, pulling the filter out, removing the plastic wrap around it, and then placing everything back as it was. And that’s all; your air purifier is now ready to start.

Levoit Vital 100S Air Purifier - A slot for the AC adapter
A slot for the AC adapter. Photo: Airpurifierfirst.com / Milan Antonic

The next step is to unpack the AC adapter, attach it to the device, plug it in, and turn it on. Please remember not to block the air inlets or outlets, as doing so may damage the motor. I recommend moving the device away from walls or other objects to ensure proper airflow.

When using the device, ensure the front and rear sides are at least 15 inches (38 cm) away from walls and other objects. You can place it near a wall only if the wall faces the device’s backside.


The Levoit Vital 100S is rectangular in shape, featuring a black base and white body. On the top, there is a black control panel with buttons and LED indicators arranged on it.

The build and plastic quality are excellent; everything is in its place, and you can immediately feel the high-quality plastic just by touching it.

Levoit Vital 100S Air Purifier - Placed on the office desk
Levoit Vital 100S – Placed on the office desk. Photo: Airpurifierfirst.com / Milan Antonic

It is available in white or black colors, but I highly prefer the white one as it adapts much more easily to almost any environment and doesn’t appear as conspicuous as the black model.

While it doesn’t have dedicated carrying slots, it features a U-shaped air inlet that is long and deep enough to insert your fingers and use it as a makeshift carrying slot, which definitely eases moving this air purifier from room to room.

Overall, this is a stylish and modern air purifier that will undoubtedly fit into almost any home.

Control Panel

The control panel is located on the top of the device and consists of controls and LED indicators. The control buttons are arranged in a line, touch-sensitive, and easy to use.

There, you can find buttons for power, sleep mode, fan speed, auto mode, display lock, timer, and display off, along with indicators for these functions as well as the filter reset indicator, Wi-Fi indicator, and an air quality indicator.

Levoit Vital 100S Air Purifier - A control panel on the top
A control panel on the top. Photo: Airpurifierfirst.com / Milan Antonic

I don’t have much to say about these controls, and frankly, I can’t remember the last time I used the physical controls on this air purifier. The VeSync smart app is more than enough for the full use of the Vital 100S.

When the air purifier is in standby mode, turned off, or unplugged, it will remember previous settings for fan speed, sleep mode, auto mode, pet mode, and the in-app display and light detection settings.


The Levoit Vital 100S is a rectangular air purifier with openings on the front for drawing air in and grilles on the top for the air outlet.

Levoit Vital 100S Air Purifier - Fan grilles on the top
Fan grilles on the top. Photo: Airpurifierfirst.com / Milan Antonic

In general, Levoit air purifiers feature two different airflow principles, or better to say, two shapes that directly influence the airflow: cylindrical and rectangular. While I used to prefer cylindrical air purifiers, in recent years, I have developed a strong preference for rectangular ones and tend to use them more often.

Size & Dimensions

The Levoit Vital 100S is a compact and portable air purifier that can easily fit even in smaller rooms where you may not have much free space.

Levoit Vital 100S Air Purifier - Slots for moving a device
Slots for moving a device. Photo: Airpurifierfirst.com / Milan Antonic

Its dimensions are 12.8 x 6.4 x 16.1 inches (32.5 x 16.3 x 41 cm), and it weighs 7 lbs (3.4 kg).

What’s in the box?

By purchasing this device, you will get the Levoit Vital 100S, a washable pre-filter (pre-installed), a True HEPA and activated carbon filter combo (pre-installed), a user manual, a quick start guide, and an AC power adapter.

Features Overview

Levoit always amazes me with the innovations and improvements integrated into every new air purifier they release.

The same is true for the Vital 100S model, which, despite its compact size, isn’t larger than a PC unit and is equipped with plenty of smart features that make using your air purifier straightforward.

Air Quality Sensor & Indicator

The Levoit Vital 100S features the AirSight™ Infrared Dust Sensor, which measures particles in the air in real time. Depending on the current air quality, it triggers specific actions in the device.

Levoit Vital 100S Air Purifier - Air quality sensor
Air quality sensor is placed on the side. Photo: Airpurifierfirst.com / Milan Antonic

The air quality indicator changes color based on the current air quality data received from the sensor. For reference, use the table below, where I have described the air quality indicator colors and their connection with the current air quality.

ColorAir Quality
BlueVery Good

Having an air quality sensor is definitely a feature that moves the Vital 100S to the next level and makes it one of the best options in the class. 

My only concern regarding the sensor is its accuracy, which is slightly lower than that of sensors in more expensive Levoit air purifiers, such as the Levoit Core 400S and Core 600S. These models use a laser particle sensor instead of an infrared one.

In addition to this sensor, the Vital 100S also includes a light detection sensor that measures the current light levels in your room. If the room is dark, the air purifier automatically dims all control panel indicators. If it’s in auto or pet mode, it won’t use high and turbo speeds to minimize motor noise.

The air quality sensor works even when the air purifier is in standby mode (turned off). It continuously monitors air quality and makes the data always available through the VeSync app.

Auto Mode

When I started reviewing air purifiers, the auto mode was a feature I consistently highlighted as innovative and advanced. However, in today’s era of smart devices, I believe it’s essential for every air purifier to include this functionality, at least at a basic level.

Auto mode allows an air purifier to adjust its fan speed according to the current air quality. But, it’s important to note that when in auto mode, the air purifier won’t activate the turbo fan speed.

This means that the Levoit Vital 100S air quality sensor constantly sends data to the device, which then switches the fan speed based on the current air quality. In the table below, you can see how the fan speed changes based on the current air quality. 

ColorAuto Mode Fan Speed
BlueSleep Mode

If auto mode doesn’t work properly and doesn’t switch the speeds as it should to, it could be due to the dirty air quality sensor, so cleaning it using a cotton swab may be a great idea.

The VeSync smart app offers access to additional auto modes, including a quiet auto mode and an efficient auto mode.

Sleep Mode

When in sleep mode, the air purifier will switch to a fan speed that is even lower than the one in low mode.

This means you will barely hear your air purifier working, making this an ideal feature if you plan to use it in a bedroom.

The sleep mode also turns off the display after 6 seconds if no other buttons are pressed.

Filter Reset Indicator

The filter reset indicator is a must-have feature. Simply, this indicator will light in red when it’s time to replace the filter.

Levoit Vital 100S Air Purifier - An elegant and modern air purifier
It’s an elegant and modern air purifier. Photo: Airpurifierfirst.com / Milan Antonic

It’s good to know that instead of using a sensor to measure the filter’s dirtiness, this system algorithmically calculates the usage of your air purifier, including the fan speed at which it has been working. Based on this data, it determines when it is time to replace the filter.

You will also get a notification on your smartphone when it’s time to replace the filter.


The timer is a feature that lets you set a specific time for your device to turn itself off automatically.

You can set a timer through the control panel for 2, 4, or 8 hours, after which the air purifier will automatically shut off. For more advanced settings, you can use the VeSync app to effortlessly set the timer anywhere from 1 to 24 hours.

Display Off

Pressing the display off button will turn off all the indicators and lights on the control panel, except for the filter reset indicator, but only if it’s activated (if it lights in red).

Display Lock

The display lock is a feature that allows you to lock the controls on your air purifier, preventing any settings from being accidentally changed.

Interestingly, this feature can be activated through the VeSync smart app even when the device is turned off. Once set, there is no way to deactivate it through the control panel. This provides a great way to maintain full control over your air purifier.


Levoit offers a standard two-year warranty for all its air purifiers.

The only action required after purchasing the device is to register it on Levoit’s website. This step is necessary to activate and extend the warranty to the full two years.

Room Coverage & CADR

CADR (Clean Air Delivery Rate) is, alongside filtration technology, one of the most important specifications to consider when purchasing an air purifier.

I placed all air purifiers from the Levoit Vital series side-by-side
I placed all air purifiers from the Levoit Vital series side-by-side. Photo: Airpurifierfirst.com / Milan Antonic

The Levoit Vital 100S has a CADR of 141 CFM / 240 m³/h, indicating its suitability for rooms up to 219 sq. ft. (20 m²). It will clean the air approximately 4.8 times within an hour in the recommended room sizes.

An ACH (Air Changes per Hour) rate of 4.8 is considered an industry standard. Therefore, don’t be misled by marketing gimmicks from some brands claiming their air purifiers can cover areas 10 times larger without disclosing the real ACH information. 

While the Levoit Vital 100S can indeed cycle air once in an 1100 sq. ft. room, it’s insufficient for significantly improving air quality in such a large space. For optimal results, you would need a device capable of cleaning the air at least 4.8 times an hour in your specific room.

Filtration Technology

The Levoit Vital 100S uses three-stage filtration technology, including a pre-filter, a True HEPA filter, and an activated carbon filter.

What initially caught my attention was the filter size, which is larger than expected for such a small air purifier. To be clear, this is a huge plus. 

Levoit Vital 100S Air Purifier - Replacement filter
Levoit Vital 100S Air Purifier – Replacement filter. Photo: Airpurifierfirst.com / Milan Antonic

Levoit has also innovated with its pre-filter, which is now permanent, washable, and easy to clean. This enhancement changed the maintenance and performance of the Vital 100S to an entirely new level.

Additionally, I would like to warn you to be careful when purchasing replacement filters for your air purifier. Although the Vital 100S was recently released, a wide selection of third-party replacement filters is already available. I can’t vouch for their quality or efficiency compared to the genuine ones, which is why I generally don’t recommend getting cheaper third-party filters over the original ones.

Levoit Vital 100S-RF Air Purifier - Replacement Filter

Levoit Vital 100S-RF Replacement Filter

Always buy genuine filters for the best performance. As soon as the filter reset indicator is on, you are ready to change filters. Do it as quickly as possible.

Check Filter Price On Amazon
Never add essential oils to your air purifier’s filters, as this can damage the filter and may even cause it to produce unpleasant odors over time.


The pre-filter is the first stage of filtration on this air purifier. Levoit has upgraded its functionality by making this filtration layer washable, reusable, and still highly effective.

Levoit Vital 100S Air Purifier - A washable pre-filter
A washable pre-filter. Photo: Airpurifierfirst.com / Milan Antonic

Although I have seen similar pre-filters on devices such as the Coway AP-1512HH and the Winix 5500-2, I must say that Levoit positively surprised me, and I really like this improvement. 

The primary function of this filter is to capture large particles such as lint, dust, fibers, hair, and pet fur. This makes it particularly ideal for pet-friendly environments, especially because it’s washable and easy to clean.

Furthermore, the pre-filter helps to protect and extend the lifespan of the True HEPA filter by trapping these large particles before they can reach the HEPA layer.

For optimal performance, clean the pre-filter at least every 2-4 weeks. It can be washed with water or cleaned using a vacuum cleaner.

True HEPA Filter

This is the primary filtration stage of the Levoit Vital 100S air purifier. The True HEPA filter captures 99.97% of airborne particles as small as 0.3 microns in size, including dust, pollen, mold spores, allergens, and other particulates.

Levoit Vital 100S Air Purifier - A True HEPA filter
A True HEPA filter. Photo: Airpurifierfirst.com / Milan Antonic

I highly believe the high quality of the True HEPA filter is the main reason why the Vital 100S achieved such remarkable results in performance tests.

Activated Carbon Filter

The final layer of defense is the activated carbon filter. This pellet-based carbon filter helps neutralize bad odors, smoke, volatile organic compounds (VOCs), and other unpleasant smells.

Levoit Vital 100S Air Purifier - A pellet-based activated carbon filter
A pellet-based activated carbon filter. Photo: Airpurifierfirst.com / Milan Antonic

It’s not the case that such a small air purifier has such an amount of carbon pellets inside, which is a big plus for Levoit. Also, I’m more often seeing carbon filters that are simple fibrous filters coated with carbon than high-quality pellet-based carbon filters, which is another confirmation of the excellent filtration technology behind the Vital 100S air purifier.

Noise Test

The Levoit Vital 100S has five different fan speeds, making it easy to adapt to almost every user’s needs. I tested its noise level at each speed using a specialized noise measurement tool that uses the dBA scale.

Levoit Vital 100S Air Purifier - Noise test
Noise test. Photo: Airpurifierfirst.com / Milan Antonic

In sleep mode, this compact air purifier produces only 40.5 dBA, ranking it among the quietest air purifiers I tested and making it an excellent choice for bedroom use. While it remains quiet at the other speeds, it’s slightly louder at the maximum speed, where it produces 65.4 dBA.

Refer to the table below for noise production at the other speeds.

Speed Value (dBA)
Sleep Mode 40.5 dBA
Low 42.7 dBA
Medium 51.6 dBA
High 58.7 dBA
Turbo 65.4 dBA

What I really like about this model is its bearable noise, which isn’t as annoying as the noise of some other air purifiers I tested. For instance, the Blueair 411, though not much louder at maximum speed, produces an odd noise at the maximum speed, which is quite unpleasant. In contrast, the noise produced by the Vital 100S at maximum speed is significantly more tolerable and not annoying at all.

Performance Tests

An air purifier is a device designed to remove or capture pollutants from the air. As such, the most crucial attribute of such a device is its efficiency, which I evaluate through performance tests.

Levoit Vital 100S Air Purifier - Performance test
Performance tests. Photo: Airpurifierfirst.com / Milan Antonic

I used this air purifier in my home for some time, evaluating its performance in the kitchen and in a living room where people smoked to form an objective opinion on its effectiveness.

In addition to these real-world tests, I conducted two controlled tests in predefined rooms, a method I’ve used to measure the performance of every air purifier I’ve reviewed.

The Levoit Vital 100S just additionally confirmed its good performance and high efficiency in these two tests, which you can find below.

194 sq. ft. Room Test

In the first test, I placed the Levoit Vital 100S in a 194 sq. ft. room, which closely matches the recommended room size.

# Starting Baseline After 60min
PM 2.5 106.7 6.5
PM 10 149.4 9.1
Particles 154835 9515
AQI 146 8

The air purifier worked at maximum speed for 60 minutes. During this time, it improved the air quality by an impressive 95%, making it 1% more efficient than its largest competitor, the Levoit Core 300S.

320 sq. ft. Room Test

In the second test, performed in a 320 sq. ft. room, the Vital 100S again demonstrated outstanding performance. It improved the air quality by 94% in just 60 minutes while operating at maximum speed.

# Starting Baseline After 60min
PM 2.5 107.6 6.4
PM 10 150.7 9
Particles 156126 9415
AQI 140 9

This result is impressive, mainly because the room size for this test significantly exceeds the recommended room size for this device, which is 219 sq. ft. (20 m²).

Operating Costs

With a motor of just 35W, the Levoit Vital 100S isn’t a heavy power consumer. It uses 30.3W at maximum speed and only 3.2W in sleep mode, which is less than a light bulb.

Levoit Vital 100S Air Purifier - A motor
A motor. Photo: Airpurifierfirst.com / Milan Antonic

Putting this into a calculation, I can say that the Vital 100S isn’t a huge power consumer. If used at maximum speed 24 hours a day for one month, your electrical bill would increase by about $2.65. This cost is reasonable and comparable to other air purifiers in its class, such as the Medify MA-15 or the Levoit Core 200S.

In addition to power usage, there’s also the cost of replacement filters. Given the fact that the pre-filter is permanent and that you only need to replace the main filter once per year, we can easily conclude that this isn’t a huge cost. 

Speed Power Usage (W)
Standby 1.5W
Sleep Mode 3.2W
Low Mode 6.5W
Medium Mode 10.5W
High Mode 17.6W
Turbo Mode 30.3W

Overall, the Levoit Vital 100S is a cheap device for maintenance, characterized by low power consumption and affordable, long-lasting filters.

FAQ on Levoit Vital 100S

Does the Levoit Vital 100S produce ozone?

No, it doesn’t. The Levoit Vital 100S doesn’t use an ionizer or UV-C light, nor any filtration technology that could produce ozone as a byproduct. Additionally, it is CARB-certified, confirming its safety for use.

How often should you change the Vital 100S filter?

The pre-filter is permanent and doesn’t require replacement. The True HEPA and activated carbon filter combo should be replaced approximately every 9-12 months, depending on use. The device will notify you when it is time to replace the old filter.

Can you wash the Vital 100S filters?

Only the pre-filter is washable and permanent. The True HEPA and activated carbon combo filter can’t be washed and should be replaced periodically, typically once a year.

What’s the best room to use the Levoit Vital 100S in?

The Levoit Vital 100S is a great option for any room within its recommended size range. However, it is particularly well-suited for bedrooms, offices, children’s rooms, and small living rooms.

What’s the warranty for this air purifier?

Levoit provides a two-year warranty for the Vital 100S model.

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