Levoit core 400s vs 600s : Making the right choice

Meet the Levoit Core 400S vs 600S, the two remarkable series from the levoit brand. With both air purifiers boasting a three-stage filtration system, a plethora of advanced features, and unparalleled performance within the air purifier market, these siblings offer an impressive array of similarities. Join us as we dissect their unique qualities and help you determine which one suits your needs best.


Control Panel

Levoit has prioritized user convenience in the design of their air purifiers, including the Core 400S and Core 600S. Both models share a similar control panel layout, ensuring familiarity across their product line. However, a slight distinction sets them apart: the Core 400S boasts an upgraded appearance, giving it a slight advantage. The silver color of the panel on the Core 600S can sometimes be distracting, making it a bit challenging to locate the desired buttons.

A notable feature present on both air purifiers is the display of PM2.5 particle levels on their control panels, enhancing user awareness. Furthermore, with the ability to connect these appliances to the Smart App, you gain effortless control and monitoring capabilities. By utilizing the app, you can conveniently access and manage all the features without the need for manual adjustments on the control panel. Levoit ensures that controlling your air purifier is as seamless as possible.

Auto Mode

As expected, both Levoit air purifiers, the Core 400S and Core 600S, come with an Auto Mode feature. This clever feature combines the AirSight Plus sensor with Auto Mode to optimize the performance of your air purifier based on real-time air quality and pollution levels.

You can activate Auto Mode either manually through the control panel or conveniently through the Smart app. Using the app allows you to be more precise in setting your air purifier’s preferences according to your specific needs.

Here’s where the Core 400S and Core 600S differ slightly. The Core 400S, when used with the VeSync App, offers the option to set the Auto mode to either silent or efficient mode. On the other hand, the Core 600S has an additional ECO mode.

You might be curious about the purpose of each of these modes, but I’ll let you discover that in the individual reviews, as they provide more detailed information.

One important thing to note is that you cannot combine Auto mode with Turbo mode, which is quite understandable, don’t you think?

Sleep Mode

Unlike some air purifiers that designate Sleep mode as their lowest fan speed, both the Core 400S and Core 600S have a dedicated Sleep mode that operates independently. The best part is that when set to Sleep mode, both appliances are impressively quiet, ensuring a peaceful environment for your bedroom.

If you plan to use an air purifier while you sleep, you’ll be pleased with these models. Not only do they operate silently, but they also have no indicator lights to disturb your sleep.

Light sensor

Having a light sensor feature has typically been a luxury found in select air purifiers I’ve tested, and the Levoit Core 600S is one of them. To utilize this feature, you need to enable it through the VeSync app. As the name suggests, this sensor is sensitive to light. When activated, it automatically assesses the ambient light in the room. If the room is completely dark, the sensor activates the display-off option and dims all other indicators on the device.

Once you turn the lights back on, the air purifier resumes its previous settings, ensuring a seamless transition and maintaining your preferred configuration.


Setting the Timer is a breeze. You can either use the button on the control panel to select your desired time within the 1-12 hour range, or take advantage of the VeSync smart app for even more flexibility. Through the app, you can adjust the Timer to span anywhere between 1 to 24 hours. This versatile option is available for both Levoit appliances, allowing you to tailor the operation of your air purifier according to your specific needs.

VeSync App: Control at Your Fingertips

The VeSync Smart app is compatible with both Android and iOS devices, offering convenient control options including voice commands through Amazon Alexa and Google Assistant. Connecting your Levoit Core 400S or Core 600S to the VeSync app is a significant advantage. This app goes beyond being a simple remote controller, providing a wealth of exclusive information not displayed on the control panel.

Filter Reset Indicator: Hassle-Free Maintenance

With the Filter reset indicator, you can say goodbye to worries about filter replacement. When it’s time to change the filter, this indicator will notify you. You can conveniently access this information either through the control panel or monitor it using the Smart app, which provides a detailed percentage value.

Lock Screen: Protect Your Air Purifier

Locking the display of your air purifier may seem unnecessary, but it can be a lifesaver in certain situations. Whether it’s a playful pet, a noisy friend, or a curious child, activating the lock screen feature safeguards your Core 400S or Core 600S from unwanted adjustments. Simply press and hold a button for three seconds to activate this option, effectively putting your air purifier in the “off-zone.” To deactivate the feature, repeat the same procedure.

Screen Off: Uninterrupted Sleep

The Screen Off option comes in handy when using your air purifier in the bedroom. By selecting this option, all indicators except the Filter Reset Indicator and essential lights on your device are dimmed, ensuring a disturbance-free sleep environment.

However, since both the Core 400S and Core 600S feature Sleep mode, you can opt to use that instead of the Screen Off option for convenient nighttime operation.

Airflow: Efficient Air Circulation

While belonging to the same air purifier family doesn’t necessarily mean identical shapes, Levoit has maintained a consistent filter shape and airflow design across the Core 400S and Core 600S models. The motors are located in the upper part of both appliances, while the bottom part houses the air inlets. In the Core 400S, the inlets are spread along the unit, while the Core 600S features inlets on all four sides. As the air passes through the filters, it is released through the upper grills of the purifier, ensuring effective air circulation.

Efficient Filtration Technology : Levoit core 400s vs 600s

Levoit core 400s vs 600s

Take a look at the Levoit Core 400S and Core 600S air purifiers, and you’ll notice their similar shapes, with the Core 400S having a slightly more rounded appearance. Inside these units, you’ll find cylindrical filters positioned at the bottom.

Both air purifiers feature a powerful 3-in-1 filtration system. This advanced technology includes a Pre-filter, a True HEPA filter, and an Activated carbon filter. Together, these filters work diligently to capture various airborne particles, allergens, and odors, ensuring cleaner and fresher air in your space.

An essential aspect to highlight is that both the Core 400S and Core 600S are ozone-free. This means they are environmentally friendly, providing effective air purification without releasing harmful ozone gases into the atmosphere.


The pre-filter in the Levoit Core 400S and Core 600S plays a crucial role in capturing larger particles like dust, lint, pet hair, and dander. By trapping these larger pollutants, the pre-filter helps protect the True HEPA filter and prolong its lifespan. Although the pre-filter should not be washed, it’s important to keep it clean. You can easily maintain it by vacuuming or wiping it with a damp cloth every two to four weeks, or more frequently if needed.

True HEPA Filter

The True HEPA filter is a standout feature in both the Core 400S and Core 600S air purifiers. With its ability to remove a minimum of 99.97% of airborne particles as small as 0.3 microns, including fine dust, smoke particles, pollen, and pet dander, this filter ensures highly effective air purification. It is a key component in achieving excellent air quality and is a hallmark of top-rated air purifiers.

Activated Carbon Filter

An activated carbon filter is essential for achieving odor-free air. Whether it’s lingering smoke from cigarettes or cooking odors that bother you, this filter will help tackle the problem. It is also effective in addressing pet odors. Both the Core 400S and Core 600S feature Levoit’s exclusive ARC Formula™, a customized and effective formula for neutralizing cooking and pet odors. This formula helps prevent oversaturation of the activated carbon filter, ensuring long-lasting odor elimination.

Performance Tests 

Levoit states that the Core 400S is capable of covering rooms up to 403 square feet, while its sibling, the Core 600S, offers an even better coverage of up to 635 square feet. As expected, these room coverage capacities align with the relative sizes of the two appliances. To validate this information, I conducted three separate tests in rooms and areas of varying sizes.

Air Quality Improvement In 560 sq. ft. Room

Levoit Core 400s
Levoit Core 600s

320 sq. ft. Room Test

For the smaller room size, I focused the test on the Core 400S since it aligns better with the room’s dimensions. It was no surprise to witness a remarkable 96% improvement in air quality. The Levoit Core 400S lived up to its promises and delivered impressive results.

560 sq. ft. Room Test

In this larger room, I pitted both air purifiers against each other to gauge their performance. As expected, the Core 600S outperformed its counterpart, achieving a 96% improvement in air quality. However, the Core 400S still impressed with a respectable 91% improvement, considering its 38W motor power.

730 sq. ft. Room Test

To truly challenge the capabilities of the Core 600S, I tested it in a room spanning 730 sq. ft. The results were highly satisfying, with a commendable 93% improvement in air quality.

Both air purifiers not only demonstrated their efficiency but also upheld the reputable standards of the manufacturer. Each one performed to the best of its abilities based on its specifications. With their impressive results, I consider it a tie without any hesitation.

Noise Tests

Both the Levoit Core 400S and Core 600S feature the same number and types of fan speeds, including three regular speeds, Sleep mode, and Turbo mode. This versatility allows you to adjust the device according to your preferences at any given moment.

Starting with the Sleep mode, the Core 400S takes the lead as it operates at a noticeably lower noise level of 42.1 dBA. In comparison, the Core 600S generates 43.9 dBA, which, although bearable, could be quieter for a mode intended for peaceful sleep.

On the other hand, when operating at the highest speed, the Core 600S produced an overwhelming noise level of 68.5 dBA. In contrast, the Core 400S reached a more manageable 59.9 dBA. It is worth noting that the top speed typically corresponds to the highest airflow and thus generates more noise.

Considering the noise levels during different modes and speeds, it is evident that the Core 400S offers a quieter experience, particularly in Sleep mode. However, the Core 600S may be noisier when operating at its maximum speed.

ProductNoise Range (dBA)
Levoit Core 400S42.1 – 59.9 dBA
Levoit Core 600S43.9 – 68.5 dBA

Operation Costs: Affordable and Efficient

When it comes to product pricing, there is a clear distinction between the Levoit Core 400S and Core 600S, with the Core 400S having a lower initial cost. Considering the real-time filter replacement, which typically occurs once a year, the Core 400S will prove to be more cost-effective in the long run.

In terms of operating costs, the expenses primarily depend on the power consumption of each air purifier. For instance, if you were to run the Core 400S, equipped with a 38W motor, at its highest speed level for 24 hours a day throughout a month, you can expect a bill of around $3. On the other hand, with the Core 600S, which has a 49W motor, the estimated bill would be approximately $4.20 for the same usage period.

Overall, both the Core 400S and Core 600S are affordable home appliances. However, the Core 400S proves to be the more economical choice due to its noticeable power consumption, especially as the speed levels increase.

conclusion : Levoit core 400s vs core 600s

After careful consideration and thorough evaluation, choosing between the Levoit Core 400S and Core 600S has been a challenging task. Both air purifiers have delivered exceptional performances and excelled in various aspects.

However, there can only be one winner.

In my opinion, the Levoit Core 400S emerges as the better buying option. It offers a slightly more affordable solution for both initial purchase and maintenance costs. Additionally, it operates at a slightly quieter noise level in Sleep and Turbo modes. If you are seeking an air purifier for regular daily use in spaces like offices, bedrooms, or living rooms, the Core 400S would be an excellent choice.

On the other hand, the Core 600S is more suitable for larger rooms that require a more powerful device, such as the Core 600S.

If you have any questions or comments about these two air purifiers, please feel free to share them in the comment box below.

About Air purifier light sensor

A light sensor in an air purifier is typically used to detect the level of ambient light in the room where the purifier is located. This sensor can help the air purifier adjust its operations based on the light conditions, contributing to energy efficiency and user convenience. Here’s how it works:

Meaning: The presence of a light sensor in an air purifier means the device can automatically adjust its operations based on the room’s light conditions. This feature enhances the user’s convenience by reducing the need for manual adjustments and can also contribute to energy savings.

Working: The light sensor continuously monitors the light levels in the room. When the room gets dark, indicating it’s night or the room is not in use, the sensor sends a signal to the air purifier’s control system.

Use: Upon receiving the signal from the light sensor, the air purifier may switch to a different mode. For example, many air purifiers have a sleep mode or night mode, which operates more quietly to avoid disturbing people who might be sleeping in the room. Some air purifiers may also dim or turn off their control panel lights to reduce light pollution in a dark room.


  1. What are the main differences between the Levoit Core 400S and Core 600S?
    • The main differences between the two models could be in terms of their size, air purification capacity, noise level, power consumption, and additional features.
  2. Which model is more energy-efficient, the Levoit Core 400S or Core 600S?
    • Both models are designed with energy efficiency in mind, but the exact energy consumption can vary based on the usage settings and conditions.
  3. Do both the Levoit Core 400S and Core 600S come with a HEPA filter?
    • Yes, both models come equipped with a True HEPA filter that can capture 99.97% of airborne particles as small as 0.3 microns.
  4. Can I control both the Levoit Core 400S and Core 600S with a smartphone app?
    • Yes, both models are compatible with the Levoit app, allowing you to control your air purifier from anywhere.
  5. Which model is more suitable for larger rooms, the Levoit Core 400S or Core 600S?
    • The suitability for larger rooms would depend on the air purification capacity of each model, which can be determined by their Clean Air Delivery Rate (CADR).
  6. Do both models have a sleep mode for quiet operation at night?
    • Yes, both models feature a sleep mode that reduces the fan speed for quieter operation.
  7. Can the filters in both models be replaced, and how often should they be replaced?
    • Yes, the filters in both models can and should be replaced regularly to maintain optimal performance. The exact frequency can depend on the air quality and usage, but generally, it’s recommended to replace the filters every 9-12 months.
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The author is an Air purifier expert with overall knowledge of air and ionizers.