LEVOIT Core 400S Review | 46 Data compared

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  • Avg. price in UK: ~£230
  • Avg. price in US: ~$220
  • Max. CADR: 442 m³/h
  • Maximum room area: 37
  • Maximum noise level: 52 dB
  • HEPA filter: yes
  • Weight: 5.8 kg

LEVOIT Core 400S review. Compare 46 technical specifications and user reviews to see how this product ranks in the Air Purifiers category and whether it is worth buying.

8.0

Overall score

What it is: An overall evaluation of products in the Air Purifiers category, based on technical analysis and user reviews.

When it matters: When you need a quick reference for identifying the best products in the Air Purifiers category.

Score components:

80.0%

7.6

Technical Score

20.0%

9.6

User score

Excellent
7.6

Technical Score

What it is: An assessment of technical performance for products in the Air Purifiers category across these key areas: Performance, Features, Design.

When it matters: When you want to compare products in the Air Purifiers category by technical performance, specifications, and available features.

Score components:

50.0%

6.7

Performance

40.0%

8.9

Features

10.0%

6.6

Design

Very good
9.6

User score

What it is: A rating that combines user reviews with the total review volume for products in the Air Purifiers category.

When it matters: When you want to know how products in the Air Purifiers category perform in everyday use and how reliable owners find them over time.

Score components:

70.0%

9.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.9
(26)
United States
Amazon_logo.png
4.7
(16644)
Amazon_logo.png
4.9
(26)

(Reviews last updated: August 2026)

Exceptional
  • 6.1
    Bedroom use

    Score components:

    35.0%

    4.9

    Maximum noise level

    30.0%

    10

    Night mode

    20.0%

    3.1

    Maximum room area

    15.0%

    5.4

    Weight

  • 9.1
    Allergy relief

    Score components:

    35.0%

    10

    Max. CADR

    30.0%

    10

    HEPA filter

    20.0%

    5.5

    Number of filtration stages

    15.0%

    10

    Washable prefilter

  • 9.1
    Smoke removal

    Score components:

    35.0%

    10

    Activated carbon filter

    30.0%

    10

    Max. CADR

    20.0%

    5.5

    Number of filtration stages

    15.0%

    10

    Air quality indicator

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Best prices in UK

Best rankings

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Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Levoit Core 400S is a smart air purifier featuring a cylindrical 360-degree intake, a 3-stage filtration system combining a nylon pre-filter, an H13 True HEPA filter capturing 99.97% of particles down to 0.3 microns, and an ARC Formula activated carbon filter for odor control. It delivers a Clean Air Delivery Rate (CADR) of 244 CFM (414 m³/h), making it ideal for spaces up to 403 sq ft (37 m²), and utilizes an AirSight Plus laser dust sensor to display real-time PM2.5 counts and adjust its 5 fan speeds dynamically in auto mode. Main advantages include exceptional particle and smoke clearance speeds, an energy-efficient 38W maximum power draw, quiet operation down to 24 dB, and seamless remote scheduling via the VeSync app with Google Assistant and Alexa voice control. However, notable drawbacks include a slightly high-pitched humming noise at its maximum 52 dB speed, a bonded filter design that makes vacuuming the pre-filter cumbersome since the entire cylinder must be removed, and a lack of built-in carrying wheels or handles despite its bulkier 11-pound footprint.

Technical Specifications of air purifier LEVOIT Core 400S

Technical Score

What it is: An assessment of technical performance for products in the Air Purifiers category across these key areas: Performance, Features, Design.

When it matters: When you want to compare products in the Air Purifiers category by technical performance, specifications, and available features.

Score components:

50.0%

6.7

Performance

40.0%

8.9

Features

10.0%

6.6

Design

7.6
LEVOIT Core 400S has a technical score of 7.58 points, which is higher than 84.7% of products in this category.
User score

What it is: A rating that combines user reviews with the total review volume for products in the Air Purifiers category.

When it matters: When you want to know how products in the Air Purifiers category perform in everyday use and how reliable owners find them over time.

Score components:

70.0%

9.4

User reviews

30.0%

10

Popularity

User score:
United Kingdom
amazon
4.9
(26)
United States
Amazon_logo.png
4.7
(16644)
Amazon_logo.png
4.9
(26)

(Reviews last updated: August 2026)

9.6
LEVOIT Core 400S has a user score of 9.58 points, which is higher than 98.9% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by products in the Air Purifiers category.
When it matters: When you prefer products in the Air Purifiers category that have been chosen and reviewed by many other buyers.
10
LEVOIT Core 400S has a popularity of 10 points, which is higher than 72.7% of products in this category.
Ratio quality/price

What it is: An indicator that combines the overall score of products in the Air Purifiers category with their prices.

When it matters: When you are comparing products in the Air Purifiers category and want a good balance between quality and price.

Score components:

60.0%

8.0

Overall score

40.0%

8.7

Price

8.2
LEVOIT Core 400S has a quality-to-price ratio of 8.2 points, which is higher than 89.6% of products in this category.
Power
What it is: The electrical power consumption of the air purifier during operation, measured in watts (W).
When it matters: Helpful for estimating long-term electricity costs, particularly when running the unit continuously day and night.

Importance: HIGH

38 W
LEVOIT Core 400S has a power output of 38 W, which is higher than that of 50.3% of air purifiers and the same as that of 0.6% of air purifiers.
Max. CADR
What it is: The Clean Air Delivery Rate (CADR), measuring the volume of purified air delivered per hour in cubic metres.
When it matters: Crucial for determining how rapidly the purifier circulates and cleans room air, especially for severe allergies or larger spaces.

Importance: HIGH

442 m³/h
LEVOIT Core 400S delivers a CADR of 442 m³/h, which is higher than that of 85.1% of air purifiers.
Maximum room area
What it is: The maximum recommended floor area (in square metres) that the air purifier can effectively treat.
When it matters: Essential for matching the purifier's airflow capacity to your room size so all air is filtered thoroughly.

Importance: HIGH

37 m²
LEVOIT Core 400S covers up to 37 m², which is smaller than 71.8% of air purifiers.
N. of speeds
What it is: The number of manual airflow speed levels available to choose on the air purifier.
When it matters: Provides flexible control between whisper-quiet low speeds for sleeping and powerful high speeds for fast room clearing.

Importance: MEDIUM

4
LEVOIT Core 400S offers 4 fan speeds, which is more than 55.9% of air purifiers and the same as 25.1% of air purifiers.
Maximum noise level
What it is: The sound level emitted by the air purifier when running at its highest fan speed, measured in decibels (dB).
When it matters: Important if you plan to use the purifier in bedrooms, nurseries, or home offices where loud fan noise causes disturbance.

Importance: HIGH

52 dB
LEVOIT Core 400S reaches 52 dB at maximum speed, which is quieter than 51.2% of air purifiers and the same as 7.3% of air purifiers.
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Air quality indicator
What it is: An optical or laser sensor system displaying real-time indoor pollution levels via color rings or numerical values.
When it matters: Provides immediate visual feedback on air cleanliness and confirms that the purifier is working effectively.

Importance: MEDIUM

yes
LEVOIT Core 400S has an air-quality indicator. This feature is present on 65.4% of air purifiers.
Continuous purification
What it is: Engineered motor and filter architecture designed for safe, uninterrupted 24/7 operation without thermal degradation.
When it matters: Essential for maintaining permanently low allergen and dust concentrations in polluted urban areas or high-pollen seasons.

Importance: LOW

yes
LEVOIT Core 400S supports continuous purification. This feature is present on 86.3% of air purifiers.
Auto mode
What it is: An intelligent operating mode that automatically increases or decreases fan speed based on live sensor pollution readings.
When it matters: Maximizes convenience and saves electricity by running quietly on low speed and ramping up only when pollution is detected.

Importance: MEDIUM

yes
LEVOIT Core 400S has auto mode. This feature is present on 67% of air purifiers.
Timer
What it is: A programmable shut-off countdown timer that turns off the air purifier automatically after a set number of hours.
When it matters: Convenient for running the unit for a specific duration before leaving home or going to bed without wasting electricity.

Importance: LOW

yes
LEVOIT Core 400S has a timer. This feature is present on 75% of air purifiers.
Maximum timer
What it is: The longest selectable countdown duration available on the air purifier's timer, expressed in hours.
When it matters: Relevant if you prefer setting extended automated operating cycles, such as a full 8-hour workday or 12-hour overnight window.

Importance: LOW

8 hours
LEVOIT Core 400S features a maximum timer of 8 hours, which is longer than that of 5.5% of air purifiers and the same as that of 57.8% of air purifiers.
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Color
What it is: The primary exterior color and aesthetic finish of the air purifier housing.
When it matters: Important for ensuring the appliance blends harmoniously into your room decor and furniture style.

Importance: LOW

white
Material
What it is: The primary manufacturing material used for the outer casing, such as ABS plastic, polycarbonate, or aluminum.
When it matters: Influences structural rigidity, scratch resistance, premium appearance, and ease of wiping clean.

Importance: LOW

plastic
Display
What it is: An integrated digital screen showing active fan speed, particulate pollution numbers, filter health, and active timers.
When it matters: Enables quick visual checks of air metrics and purifier settings directly on the device without picking up your phone.

Importance: LOW

yes
LEVOIT Core 400S has a display. This feature is present on 51.1% of air purifiers.
Display position
What it is: The physical placement of the display screen on the body of the air purifier (e.g., top panel or front facade).
When it matters: Affects viewing convenience: top displays are easiest to read while standing, while front displays are visible from across the room.

Importance: LOW

top
Control type
What it is: The user interface mechanism for operating the device, such as capacitive touch keys, push buttons, or rotary dials.
When it matters: Determines tactile responsiveness, ease of operation in dark rooms, and durability over years of regular use.

Importance: LOW

touch, app, voice
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LEVOIT Core 400S vs the average air purifier

  • 84.2% higher CADR
    LEVOIT Core 400S provides a higher clean air delivery rate than the average air purifier (442 m³/h vs 240 m³/h).
    What it is: The Clean Air Delivery Rate (CADR), measuring the volume of purified air delivered per hour in cubic metres.
    When it matters: Crucial for determining how rapidly the purifier circulates and cleans room air, especially for severe allergies or larger spaces.

    Importance: HIGH

    LEVOIT Core 400S provides a higher clean air delivery rate than the average air purifier (442 m³/h vs 240 m³/h).442 m³/h vs 240 m³/h
  • Supports Wi‑Fi
    LEVOIT Core 400S supports Wi‑Fi; the average air purifier does not.
    What it is: Wireless connectivity enabling smartphone app pairing for remote operation, scheduling, and live air quality tracking.
    When it matters: Allows you to inspect home pollution levels from work and turn on the purifier so you return home to clean air.

    Importance: MEDIUM

    LEVOIT Core 400S supports Wi‑Fi; the average air purifier does not.
  • Has a child lock
    LEVOIT Core 400S has a child lock; the average air purifier does not.
    What it is: A safety lock feature that disables the on-device control panel buttons to prevent unintended changes.
    When it matters: Essential in households with curious toddlers or pets who might accidentally switch off the purifier or alter speed settings.

    Importance: MEDIUM

    LEVOIT Core 400S has a child lock; the average air purifier does not.
  • Supports voice control
    LEVOIT Core 400S supports voice control; the average air purifier does not.
    What it is: Integration with voice assistants such as Amazon Alexa, Google Assistant, or Apple Siri for voice commands.
    When it matters: Offers convenient hands-free control to adjust fan speeds, check filter status, or turn the purifier on and off.

    Importance: LOW

    LEVOIT Core 400S supports voice control; the average air purifier does not.
  • Supports 360° purification
    LEVOIT Core 400S supports 360° purification; the average air purifier does not.
    What it is: A cylindrical or multi-directional intake design that draws in polluted room air from all surrounding angles.
    When it matters: Improves airflow circulation and offers versatile room placement without needing to position the intake toward open space.

    Importance: MEDIUM

    LEVOIT Core 400S supports 360° purification; the average air purifier does not.
  • 1 more fan speeds
    LEVOIT Core 400S provides more fan speed settings than the average air purifier (4 vs 3).
    What it is: The number of manual airflow speed levels available to choose on the air purifier.
    When it matters: Provides flexible control between whisper-quiet low speeds for sleeping and powerful high speeds for fast room clearing.

    Importance: MEDIUM

    LEVOIT Core 400S provides more fan speed settings than the average air purifier (4 vs 3).4 vs 3
  • Supports delayed start
    LEVOIT Core 400S supports delayed start; the average air purifier does not.
    What it is: A delayed activation timer allowing you to set a delay before the air purifier automatically turns on.
    When it matters: Useful for scheduling the purifier to begin cleaning shortly before you arrive home so you step into fresh air without running it all day.

    Importance: LOW

    LEVOIT Core 400S supports delayed start; the average air purifier does not.
  • Has a handle
    LEVOIT Core 400S has a handle; the average air purifier does not.
    What it is: An integrated carry handle or recessed hand grip built into the chassis for lifting.
    When it matters: Makes transporting the air purifier between bedrooms, living areas, or up and down stairs safer and effortless.

    Importance: LOW

    LEVOIT Core 400S has a handle; the average air purifier does not.
  • 84.2% higher CADR
    LEVOIT Core 400S provides a higher clean air delivery rate than the average air purifier (442 m³/h vs 240 m³/h).
  • Supports 360° purification
    LEVOIT Core 400S supports 360° purification; the average air purifier does not.
  • 1 more fan speeds
    LEVOIT Core 400S provides more fan speed settings than the average air purifier (4 vs 3).
  • 1 dB lower maximum noise level
    LEVOIT Core 400S runs quieter at maximum speed than the average air purifier (52 dB vs 53 dB).
  • 0.5 W higher power
    LEVOIT Core 400S has a higher power output than the average air purifier (38 W vs 37.5 W).
  • Supports Wi‑Fi
    LEVOIT Core 400S supports Wi‑Fi; the average air purifier does not.
  • Has a child lock
    LEVOIT Core 400S has a child lock; the average air purifier does not.
  • Supports voice control
    LEVOIT Core 400S supports voice control; the average air purifier does not.
  • Supports delayed start
    LEVOIT Core 400S supports delayed start; the average air purifier does not.
  • Has a handle
    LEVOIT Core 400S has a handle; the average air purifier does not.
  • 0.12 m longer power cord
    LEVOIT Core 400S features a longer power cord than the average air purifier (1.9 m vs 1.8 m).
  • 12 m² smaller room area
    LEVOIT Core 400S covers a smaller room area than the average air purifier (37 m² vs 49 m²).
  • 5.4 cm greater depth
    LEVOIT Core 400S is deeper than the average air purifier (27.4 cm vs 22 cm).
  • 26.9% higher weight
    LEVOIT Core 400S is heavier than the average air purifier (5.8 kg vs 4.57 kg).
  • 2 cm taller height
    LEVOIT Core 400S is taller than the average air purifier (52 cm vs 50 cm).
  • 7782.5 cm³ larger external volume
    LEVOIT Core 400S has a larger overall volume than the average air purifier (39039.5 cm³ vs 31257.025 cm³).
  • 0.1 cm wider width
    LEVOIT Core 400S is wider than the average air purifier (27.4 cm vs 27.3 cm).
  • 12 m² smaller room area
    LEVOIT Core 400S covers a smaller room area than the average air purifier (37 m² vs 49 m²).
    What it is: The maximum recommended floor area (in square metres) that the air purifier can effectively treat.
    When it matters: Essential for matching the purifier's airflow capacity to your room size so all air is filtered thoroughly.

    Importance: HIGH

    LEVOIT Core 400S covers a smaller room area than the average air purifier (37 m² vs 49 m²).37 m² vs 49 m²
  • 5.4 cm greater depth
    LEVOIT Core 400S is deeper than the average air purifier (27.4 cm vs 22 cm).
    What it is: The front-to-back depth measurement of the air purifier, in centimetres (cm).
    When it matters: Determines how far the purifier protrudes outward into walkways or away from walls.

    Importance: LOW

    LEVOIT Core 400S is deeper than the average air purifier (27.4 cm vs 22 cm).27.4 cm vs 22 cm
  • 26.9% higher weight
    LEVOIT Core 400S is heavier than the average air purifier (5.8 kg vs 4.57 kg).
    What it is: The total physical net weight of the air purifier without packaging, measured in kilograms (kg).
    When it matters: Important if you frequently carry the purifier between rooms, to different floors, or place it on furniture.

    Importance: MEDIUM

    LEVOIT Core 400S is heavier than the average air purifier (5.8 kg vs 4.57 kg).5.8 kg vs 4.57 kg
  • 64.3% more expensive
    LEVOIT Core 400S is more expensive than the average air purifier (£230 vs £140).
    LEVOIT Core 400S is more expensive than the average air purifier (£230 vs £140).£230 vs £140
  • 2 cm taller height
    LEVOIT Core 400S is taller than the average air purifier (52 cm vs 50 cm).
    What it is: The vertical height of the air purifier unit, measured in centimetres (cm).
    When it matters: Important for ensuring the unit fits underneath tables, under low window sills, or onto designated shelves.

    Importance: LOW

    LEVOIT Core 400S is taller than the average air purifier (52 cm vs 50 cm).52 cm vs 50 cm
  • 7782.5 cm³ larger external volume
    LEVOIT Core 400S has a larger overall volume than the average air purifier (39039.5 cm³ vs 31257.025 cm³).
    What it is: This attribute shows the approximate external volume of the air purifier in cubic centimetres.
    When it matters: It matters when comparing how much physical space different air purifiers occupy.

    Importance: LOW

    LEVOIT Core 400S has a larger overall volume than the average air purifier (39039.5 cm³ vs 31257.025 cm³).39039.52 cm³ vs 31257.025 cm³
  • 0.1 cm wider width
    LEVOIT Core 400S is wider than the average air purifier (27.4 cm vs 27.3 cm).
    What it is: The horizontal width across the front of the air purifier, measured in centimetres (cm).
    When it matters: Essential for confirming the unit fits neatly between furniture, in tight corners, or on compact bedside tables.

    Importance: LOW

    LEVOIT Core 400S is wider than the average air purifier (27.4 cm vs 27.3 cm).27.4 cm vs 27.3 cm

Graphic comparison of LEVOIT Core 400S and other products in the Air Purifiers category

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Third-party reviews

United Kingdom

(Reviews last updated: August 2026)

What customers like about LEVOIT Core 400S?

  • Highly effective at removing dust, allergens, pet dander, and cooking odors
  • Whisper-quiet operation, especially on lower and sleep mode settings
  • Intuitive and useful VeSync smartphone app integration with smart control capabilities
  • Accurate real-time PM2.5 tracking with the AirSight Plus laser dust sensor
  • Responsive Auto Mode that automatically adjusts fan speeds based on current air quality
  • Sleek, modern cylindrical design that fits well into various room décors

What customers dislike about LEVOIT Core 400S?

  • Can become quite loud and produce a higher-pitched hum at the highest fan speeds
  • Cylindrical design has a somewhat large footprint and cannot be placed flush against walls
  • Bonded filter design makes it cumbersome to clean the pre-filter mesh individually
  • Replacing the entire filter is required once the carbon or HEPA components are spent
  • Lacks a dedicated sensor for detecting Volatile Organic Compounds (VOCs) or gases
  • Occasional software glitches or connectivity issues reported with the companion app

Expert reviews

H
housefresh.com
16/03/2026
Summary of the review
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rtings.com
13/05/2024
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B
breathequality.com
29/06/2026
Summary of the review
T
tomsguide.com
02/08/2021
Summary of the review
T
trustedreviews.com
10/01/2024
Summary of the review
F
familyhandyman.com
06/05/2024
Summary of the review
T
techgearlab.com
13/05/2026
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A
airqualitynest.com
07/02/2026
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Video reviews

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