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Levoit 300S vs 400S: Which is Better For the Clean Air?

Have you faced the dilemma of choosing between the Levoit 300S vs 400S air purifiers? Look no further! I understand the challenges you’re encountering, and I am here to provide you with an in-depth comparison between these two models.

My goal is to help you make an informed decision and select the appliance that best suits your needs. Let’s dive into the details and discover which one emerges as the ultimate winner!

Quick Comparison

Before a detailed rundown, here are the key features of the Levoit 300S and 400S air purifiers that set them apart:

  • Firstly, the recommended coverage difference is what separates the both of them. With 219 sq ft. for the 300S, the 400S on the other hand provides coverage of 403 sq ft.
  • Secondly, the power consumption of the 400S is 38 W with that of 26 W for the 300S.
  • Thirdly, there’s a difference in the size of the two devices with 400S being the bigger and bulkier design.

But, that’s not all. Continue reading to learn about their detailed specs and see how both of these Levoit devices compare to each other in 9 different parameters. Let’s begin!

Comparison Chart

The table listed below has all the essential details:






Smart True HEPA Air Purifier

Smart True HEPA Air Purifier




Effective Range:

219 ft2 / 20 m2

403 ft2 / 37 m2


8.7 x 8.7 x 14.2 in /

22 x 22 x 36 cm

10.8 x 10.8 x 20.5 in /

27.4 x 27.4 x 52 cm


5.95 lb / 2.7 kg

14.12 lb / 6.4 kg

Noise Level:




141 CFM / 240 m³/h

260 CFM / 442 m³/h

Standby Power:



Smart Controls:

Via VeSync app, Amazon Alexa or Google Assistant™

Via VeSync app, Amazon Alexa or Google Assistant™

Filtration System:

Pre-Filter, H13 True HEPA Filter, High-Efficiency Activated Carbon Filter with HEPASmart™ Technology

Pre-Filter, H13 True HEPA Filter, High-Efficiency Activated Carbon Filter with HEPASmart™ Technology and ARC Formula™

Air Quality Sensor:

AirSight™ Plus Technology with PM2.5 Display and Air Quality Indicator Rings

AirSight™ Plus Technology with PM2.5 Display and Air Quality Indicator Rings

VortexAir™ Technology:

Increases indoor air circulation and filtration efficiency

Increases indoor air circulation and filtration efficiency


Now let’s go over the pros and cons of the purifiers.

A Quick Look at the Good and the Bad of the 300S

Levoit 300S
100,878 Reviews
Levoit 300S

Let’s compare the advantages and disadvantages of the 300S:


  • Equipped with H-13 True HEPA filter and 3-stage technology to tackle airborne particles.
  • Whisper-quiet operation due to QieutKEAP technology with noise levels as low as 24 decibels.
  • VeSync App effortlessly allows it to control it from anywhere.
  • Allows you to create custom schedules to need your preferences.
  • Energy-efficient design with Energy Star certification.


  • Provides lesser coverage than the 400S.

A Quick Look at the Good and the Bad of the 400S

Levoit 400S
17,503 Reviews
Levoit 400S

Now that I have discussed the former model, let’s look at the benefits and drawbacks of the second unit:


  • Provides better coverage of 403 sq ft. ideal for medium to large rooms.
  • Wi-Fi connectivity allows remote control via a smartphone app.
  • Real-time air quality monitoring with PM 2.5 display sensor.
  • Gets rid of any smells with the powerful ARC formula.


  • The design is a bit bulkier.

Now, let’s explore the key differences between the Levoit Core 300S and Core 400S air purifiers to help you make an informed decision.

1. An Insight Into Filtration System

Both the Levoit Core 300S and Core 400S utilize a comprehensive 3-stage filtration system to ensure the air you breathe is free from harmful particles:

levoit 300s vs 400s filtration

  • Stage 1: Pre-Filter: This initial filter effectively captures larger contaminants like dust, hair, and pet fur.
  • Stage 2: HEPA Filter: The second stage employs an H13 True HEPA filter capable of clearing impurities and allergens as small as 0.003 microns, including pollen and pet dander.
  • Stage 3: Activated Carbon Filter: In the final stage, a layer of activated charcoal removes VOCs, chemicals, cooking smells, pet odors, and fumes.

Winner: I will call it a draw as both purifiers share the same trait when it comes to filters.

2. A Comparison of Coverage Area & Efficiency

In terms of the coverage area of the former model;

  • The 300S has an effective range of 219 sq ft.
  • It is designed for smaller rooms.
  • The Core 300S models deliver CADR ratings of 240 m³/h (141 CFM).
levoit 300s vs 400s

On the other hand, the 400S :

  • Boasts a higher range of 403 sq ft.
  • It can handle bigger and more open floor plans.
  • The 400S has a better rating of 442 m³/h (260 CFM).

With the inclusion of VortexAir Technology, the cleaned air is evenly distributed throughout the designated room. While the 300S purifier can also be used in larger rooms, the air purification process may take slightly longer.

Winner: The 400S takes the lead by giving a higher coverage for purification. The 400S also excels in removing smoke, dust, and pollen, with a CADR rating of 260 CFM.

3. Working Noise Of Both Purifiers

Both the Levoit Core 300s and Core 400S models feature whisper-quiet technology, ensuring a peaceful environment.

  • Both of the both have the same noise level at the lowest setting of 24 decibels.
  • When on the highest fan speed setting: The 400S has a higher sound of 52 decibels as compared to 48 decibels of its counterpart.
levoit 300s vs 400s noise level

Winner: The 300S has a lower noise level and is a winner in this category.

4. How Both Purifiers Differ in Power Consumption

Both the Levoit Core 300S and Core 400S models are Energy Star certified, ensuring energy-efficient operation.

  • However, the Core 300S consumes lower power, with a rating of 26 W compared to the Core 400S, which has a power rating of 38 W.
  • This makes the Core 300S both eco-friendly and cost-effective, helping you keep your electricity bills in check.

Winner: The 300S is the better choice among the two when it comes to saving your energy bills, but on the downside, you will need to compromise on the efficiency the 400S has to offer.

5. A Comparison of the Features

The table listed below highlights all the important features:




Smart Controls:

QuietKEAP™ Technology:

VortexAir™ Technology:

Ozone Free:

1–24 Hour Timer:

For 1-12 hours

Check Filter Indicator:

3-Stage Filtration:

Sleep Mode:

Air Quality Indicator Rings:

Wi-Fi Indicator:

Now, let’s explore the core features in detail:

Sensors & Display:

The Levoit Core 300S and 400S offer advanced sensors and an intuitive indicator display system.

  • With the AirSight Plus technology, they allow continuous monitoring of air quality in real time, providing updates and changes in intake.
  • The color-indicating ring offers a quick way to assess and check air quality, enabling you to adjust settings for optimal air purification.
  • Additionally, synchronization with the VeSync App provides detailed insights into PM 2.5 particles.
levoit 300s vs 400s sensors

Connectivity & Compatibility:

Both of the models offer smart connectivity. The Core 300S and 400S support Wi-Fi connectivity and compatibility with the VeSync App.

  • This offers enhanced convenience and control, allowing you to manage the air purifier remotely from anywhere using your smartphone.
  • You can create personalized schedules and even control the device using voice commands through Alexa or Google Home, making both of the options very user-friendly.

Winner: I call it a draw as the connectivity and the smart features of the cleaners are the same for both of the units.

For more information on the Levoit Core 300S, watch this informative video

6. A Comparison of Appearance: Size and Design

When I notice the outer appearance, here is how they compare;

  • The 300S is much lighter and smaller weighing 5.95 pounds, given that it was built for smaller rooms.
  • The 400S is bigger and more heavier that weighs 14 pounds as it needs to cater to bigger rooms than the 300S.

Winner: The 300S is a lighter, portable, and movable option among the two and takes the lead. But you need to realize the purpose for which both of them were built.

To see how the 400S perform on each of the tests, watch this video:

7. Warranty and Certifications

The Levoit Core 300S and 400S come with a comprehensive 2-year warranty. This provides you with peace of mind, knowing that Levoit stands behind the quality and reliability of its product.

In the unlikely event of any manufacturing defects or malfunctions during the warranty period, Levoit will repair or replace the unit free of charge.

levoit 300s vs 400s certification

Let’s explore the certifications obtained by both the Levoit Core 300S and Core 400S models.

  • CARB Certification: Both the Core 300S and Core 400S have achieved CARB certification, indicating their compliance with stringent regulations for reducing indoor air pollutants.
  • Energy Star Certification: They proudly hold the Energy Star certification, which recognizes their energy-saving capabilities without compromising performance.
  • ETL Certification: The ETL certification, signifies that these air purifiers meet the safety standards established by Intertek, a leading global testing and certification organization.
  • FCC Certification: The Federal Communications Commission (FCC) certification is another noteworthy achievement for the Core 300S and Core 400S air purifiers.

Winner: As all of the Levoit Core S series have the same certifications and warranty, I call it a draw.

Final Decision: So Which One to Choose?

After a thorough comparison, it is clear that both the Levoit Core 300S and Core 400S air purifiers offer reliable air cleaning capabilities. However, the Core 400S emerges as the superior choice due to its additional features and enhanced functionality.

The Core 400S excels in the following aspects:

  • It has a higher CADR rating of 260 CFM which means it can easily cater to all kinds of pollutants you need to get rid of.
  • It provides better and greater coverage of 403 sq ft which means you can rest easy knowing that your house will be effectively cleaned.
  • It comes with an ARC formula that effectively neutralizes odors and smells.

However, if you need a purifier that consumes less energy and is a more portable option then 300S is the way to go.

Read our other popular posts:

Levoit Core 200S vs Core 300: Which Is the Winner

Levoit 400s Review: Upsides, Downsides, and Key Features

Levoit 600S Review: Is It Worth It In 2023 Revealed!

Levoit 400s vs 600s: Best Choice Between the Two Revealed


How long does a Levoit 400S filter last?

The Levoit 400S filter lasts for up to 12 months.

Does the Levoit 400S come with a filter?

Yes, the Levoit 400S comes with a filter. The product offers 3 stages HEPA filtration system including a pre-filter, HEPA filter, and an activated carbon filter.

Does Levoit 400S produce ozone?

Yes, the Levoit 400S does not produce ozone.

Does Levoit 300S remove mold?

Yes, the Levoit 300S removes mold.


The two air purifiers offer incredible smart features, amazing purification capabilities, and user-friendly app design. Both of them are the forefront products providing you with clean air. But before purchasing look at how they compare on power consumption, cleaning power, and coverage.

If you prioritize convenience, low cost, and portability, the Levoit Core 300S is the clear winner for small rooms. As it is more energy efficient and can be easily maneuvered.

Levoit Core 300S True HEPA Air Purifier
100,878 Reviews
Levoit Core 300S True HEPA Air Purifier

Compact and light model that cleans up to 219 sq ft. of space. Comes with a H-13 filter, smart controls, and a patented whisper sleep mode to reduce noise.

For those prioritizing better and more cleaning capabilities, I would suggest going for the 400S model. This offers greater coverage with a better CADR rating.

Levoit Core 400S True HEPA Air Purifier
17,503 Reviews
Levoit Core 400S True HEPA Air Purifier

Comes with an ARC Formula to neutralize odors and smells up to 403 sq ft on auto mode. QuietKEAP tech for you to enjoy low noise and clean air. Equipped with Voice Control and PM 2.5 display laser dust sensor to remove airborne particles detected.