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LEVOIT LV450S Review | 43 Data compared

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  • Avg. price in UK: ~£90
  • Avg. price in US: ~$80
  • Humidification rate: 550 ml/h
  • Maximum room area: 40 m²
  • Water tank capacity: 4.5 L
  • Maximum operating time: 45 hours
  • Maximum noise level: 41 dB

LEVOIT LV450S review. Compare 43 technical specifications and user reviews to see how this product ranks in the Humidifiers category and whether it is worth buying.

7.8

Overall score

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

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

Score components:

80.0%

8.0

Technical Score

20.0%

7.0

User score

Very good
8.0

Technical Score

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

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

Score components:

45.0%

7.4

Performance

40.0%

9.2

Features

15.0%

6.7

Design

Excellent
7.0

User score

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

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

Score components:

70.0%

8.8

User reviews

30.0%

2.8

Popularity

User score:
United Kingdom
amazon
4.2
(34)
United States
Amazon_logo.png
4.5
(63)

(Reviews last updated: August 2026)

Very good
  • 7.4
    Bedroom use

    Score components:

    35.0%

    3.0

    Maximum noise level

    25.0%

    9.3

    Maximum operating time

    20.0%

    10

    Timer

    20.0%

    10

    Automatic low-water shut-off

  • 8.5
    Large rooms

    Score components:

    35.0%

    10

    Humidification rate

    30.0%

    6.8

    Maximum room area

    25.0%

    7.6

    Water tank capacity

    10.0%

    10

    Hygrostat

  • 9.4
    Plant care

    Score components:

    30.0%

    10

    Hygrostat

    25.0%

    10

    Humidification rate

    25.0%

    7.6

    Water tank capacity

    20.0%

    10

    360° nozzle

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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 OasisMist 450S is a smart hybrid ultrasonic and steam humidifier featuring a 4.5-litre (1.19-gallon) top-fill water tank that delivers a powerful maximum mist output of 550 mL/h, designed to cover rooms from 215 to 430 square feet (20–40 m²) for up to 45 continuous hours. Key performance characteristics and pros include its dual warm and cool mist settings, dual 360-degree rotating nozzles, built-in humidistat for automated Auto Mode adjustments, an aromatherapy tray, and smart remote operation via the VeSync app with Amazon Alexa or Google Assistant integration, all while maintaining quiet operation between 26 dB and 41 dB. However, major cons include elevated power consumption during warm mist usage, a significantly reduced runtime of under 20 hours when blasting both modes simultaneously, a risk of white dust build-up from hard water, and a somewhat tedious multi-part manual cleaning process.

Technical Specifications of humidifier LEVOIT LV450S

Technical Score

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

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

Score components:

45.0%

7.4

Performance

40.0%

9.2

Features

15.0%

6.7

Design

8.0
LEVOIT LV450S has a technical score of 8.03 points, which is higher than 87.9% 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 Humidifiers category.

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

Score components:

70.0%

8.8

User reviews

30.0%

2.8

Popularity

User score:
United Kingdom
amazon
4.2
(34)
United States
Amazon_logo.png
4.5
(63)

(Reviews last updated: August 2026)

7.0
LEVOIT LV450S has a user score of 6.98 points, which is lower than 75.2% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by products in the Humidifiers category.
When it matters: When you prefer products in the Humidifiers category that have been chosen and reviewed by many other buyers.
2.8
LEVOIT LV450S has a popularity of 2.8 points, which is lower than 78.5% of products in this category.
Ratio quality/price

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

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

Score components:

60.0%

7.8

Overall score

40.0%

8.2

Price

7.9
LEVOIT LV450S has a quality-to-price ratio of 7.9 points, which is higher than 69.1% of products in this category.
Technology
What it is: The method the humidifier uses to turn water into moisture for the room.
When it matters: Technology affects mist temperature, visible output, maintenance needs, and sensitivity to minerals in the water.

Importance: LOW

ultrasonic
Humidification rate
What it is: The maximum amount of water the humidifier can release into the air per hour.
When it matters: A higher rate raises room humidity faster and is more useful in dry or larger spaces.

Importance: HIGH

Good value: At least 300 ml/h

550 ml/h
LEVOIT LV450S delivers a humidification rate of 550 ml/h, which is higher than that of 92.9% of humidifiers and equal to that of 3.6% of humidifiers.
Maximum room area
What it is: The largest room floor area the humidifier is recommended to cover.
When it matters: A larger coverage rating is important for open-plan spaces and larger bedrooms or living rooms.

Importance: HIGH

Good value: At least 40 m²

40 m²
LEVOIT LV450S covers rooms up to 40 m², which is larger than that of 61.3% of humidifiers and equal to that of 9.2% of humidifiers.
Water tank capacity
What it is: The usable amount of water the humidifier’s reservoir can hold.
When it matters: A larger tank generally needs fewer refills and can support longer operation between top-ups.

Importance: HIGH

Good value: At least 4 L

4.5 L
LEVOIT LV450S has a water tank capacity of 4.5 L, which is larger than that of 67.1% of humidifiers and equal to that of 4.7% of humidifiers.
Maximum operating time
What it is: The longest stated operating time from one full water tank.
When it matters: Longer runtime means fewer refills during overnight use or extended daily operation.

Importance: HIGH

Good value: At least 24 hours

45 hours
LEVOIT LV450S runs for up to 45 hours on a single fill, which is longer than 81.2% of humidifiers and equal to that of 0.7% of humidifiers.
Show more
Warm mist function
What it is: Indicates whether the humidifier can produce warm mist as well as cool mist.
When it matters: Useful when you want warmer output in cool weather instead of cool mist alone.

Importance: HIGH

Good value: yes

yes
LEVOIT LV450S offers a warm-mist option. A warm-mist option is present in 25.5% of humidifiers.
Aromatherapy support
What it is: Indicates whether the humidifier supports the safe use of aromatic oils or fragrance media.
When it matters: Useful if you want to add fragrance without putting oil directly into the water tank.

Importance: MEDIUM

Good value: yes

yes
LEVOIT LV450S supports aromatherapy. Aromatherapy support is available in 73.8% of humidifiers.
Dedicated aroma compartment
What it is: Indicates whether the humidifier has a separate compartment for aroma pads or essential oils.
When it matters: A dedicated compartment keeps fragrance media separate from the main water tank.

Importance: LOW

Good value: yes

yes
LEVOIT LV450S includes a dedicated aroma compartment. A dedicated aroma compartment is present in 48.3% of humidifiers.
Automatic low-water shut-off
What it is: Indicates whether the humidifier switches itself off when the water level becomes too low.
When it matters: This safety feature helps prevent the unit from continuing to run with an empty tank.

Importance: HIGH

Good value: yes

yes
LEVOIT LV450S shuts off automatically when water runs low. Automatic low-water shut-off is available in 99.3% of humidifiers.
Water level indicator
What it is: Indicates whether the humidifier shows the amount of water remaining in its tank.
When it matters: A visible level indicator makes it easier to know when the tank needs refilling.

Importance: MEDIUM

Good value: yes

yes
LEVOIT LV450S includes a water-level indicator. A water-level indicator is present in 83.9% of humidifiers.
Show more
Fill type
What it is: The design mechanism used to add water to the humidifier tank, distinguished primarily between convenient top-fill and inverted bottom-fill designs.
When it matters: Top-fill humidifiers let you pour water directly into the top with a pitcher without carrying a heavy, dripping tank to the tap.

Importance: LOW

top fill
Color
What it is: The primary exterior color of the humidifier.
When it matters: Color matters when you want the humidifier to blend with the room.

Importance: LOW

white
Material
What it is: The primary material used for the humidifier’s exterior housing.
When it matters: Material matters for durability, feel and appearance.

Importance: LOW

plastic
360° nozzle
What it is: Whether the humidifier has a nozzle that rotates through 360° to direct the mist.
When it matters: A rotating nozzle helps redirect mist without moving the humidifier.

Importance: LOW

Good value: yes

yes
LEVOIT LV450S has a 360° nozzle. A 360° nozzle is included in 57.7% of humidifiers.
Display
What it is: Whether the humidifier has a display for settings and status information.
When it matters: A display makes humidity, mode and timer information easier to check.

Importance: LOW

Good value: yes

yes
LEVOIT LV450S has a display. A display is included in 43.6% of humidifiers.
Show more

LEVOIT LV450S vs the average humidifier

  • 2.12x higher humidification rate
    LEVOIT LV450S delivers a higher humidification rate than the average humidifier (550 ml/h vs 260 ml/h).
    What it is: The maximum amount of water the humidifier can release into the air per hour.
    When it matters: A higher rate raises room humidity faster and is more useful in dry or larger spaces.

    Importance: HIGH

    Good value: At least 300 ml/h

    LEVOIT LV450S delivers a higher humidification rate than the average humidifier (550 ml/h vs 260 ml/h).550 ml/h vs 260 ml/h
  • Warm-mist option
    LEVOIT LV450S offers a warm-mist option; the average humidifier does not offer a warm-mist option.
    What it is: Indicates whether the humidifier can produce warm mist as well as cool mist.
    When it matters: Useful when you want warmer output in cool weather instead of cool mist alone.

    Importance: HIGH

    Good value: yes

    LEVOIT LV450S offers a warm-mist option; the average humidifier does not offer a warm-mist option.
  • Wi-Fi control
    LEVOIT LV450S supports Wi-Fi control; the average humidifier does not support Wi-Fi control.
    What it is: Indicates whether the humidifier connects to Wi-Fi for remote app-based features.
    When it matters: Wi-Fi matters if you want to adjust settings or monitor the humidifier away from its controls.

    Importance: HIGH

    Good value: yes

    LEVOIT LV450S supports Wi-Fi control; the average humidifier does not support Wi-Fi control.
  • Voice control supported
    LEVOIT LV450S supports voice control; the average humidifier does not support voice control.
    What it is: Indicates whether the humidifier can be operated through a compatible voice assistant.
    When it matters: Voice control is useful for hands-free adjustment and smart-home routines.

    Importance: MEDIUM

    Good value: yes

    LEVOIT LV450S supports voice control; the average humidifier does not support voice control.
  • Hygrostat included
    LEVOIT LV450S has a hygrostat; the average humidifier has no hygrostat.
    What it is: Whether the humidifier can sense room humidity and regulate its output automatically.
    When it matters: A hygrostat helps maintain a chosen humidity target without constant manual adjustment or unnecessary operation.

    Importance: HIGH

    Good value: yes

    LEVOIT LV450S has a hygrostat; the average humidifier has no hygrostat.
  • 21 hours longer runtime
    LEVOIT LV450S runs longer on a single fill than the average humidifier (45 hours vs 24 hours).
    What it is: The longest stated operating time from one full water tank.
    When it matters: Longer runtime means fewer refills during overnight use or extended daily operation.

    Importance: HIGH

    Good value: At least 24 hours

    LEVOIT LV450S runs longer on a single fill than the average humidifier (45 hours vs 24 hours).45 hours vs 24 hours
  • Dedicated aroma compartment
    LEVOIT LV450S includes a dedicated aroma compartment; the average humidifier does not include a dedicated aroma compartment.
    What it is: Indicates whether the humidifier has a separate compartment for aroma pads or essential oils.
    When it matters: A dedicated compartment keeps fragrance media separate from the main water tank.

    Importance: LOW

    Good value: yes

    LEVOIT LV450S includes a dedicated aroma compartment; the average humidifier does not include a dedicated aroma compartment.
  • 4.36 cm narrower body
    LEVOIT LV450S has a narrower body than the average humidifier (15.2 cm vs 19.555 cm).
    What it is: The humidifier’s side-to-side width.
    When it matters: A narrower humidifier takes up less space on a bedside table, desk or shelf.

    Importance: MEDIUM

    Good value: Up to 20 cm

    LEVOIT LV450S has a narrower body than the average humidifier (15.2 cm vs 19.555 cm).15.2 cm vs 19.555 cm
  • 2.12x higher humidification rate
    LEVOIT LV450S delivers a higher humidification rate than the average humidifier (550 ml/h vs 260 ml/h).
  • Hygrostat included
    LEVOIT LV450S has a hygrostat; the average humidifier has no hygrostat.
  • 21 hours longer runtime
    LEVOIT LV450S runs longer on a single fill than the average humidifier (45 hours vs 24 hours).
  • 1.15 L larger water tank
    LEVOIT LV450S has a larger water tank than the average humidifier (4.5 L vs 3.35 L).
  • 9 m² more room coverage
    LEVOIT LV450S covers larger rooms than the average humidifier (40 m² vs 31 m²).
  • Warm-mist option
    LEVOIT LV450S offers a warm-mist option; the average humidifier does not offer a warm-mist option.
  • Wi-Fi control
    LEVOIT LV450S supports Wi-Fi control; the average humidifier does not support Wi-Fi control.
  • Voice control supported
    LEVOIT LV450S supports voice control; the average humidifier does not support voice control.
  • Dedicated aroma compartment
    LEVOIT LV450S includes a dedicated aroma compartment; the average humidifier does not include a dedicated aroma compartment.
  • 4.36 cm narrower body
    LEVOIT LV450S has a narrower body than the average humidifier (15.2 cm vs 19.555 cm).
  • Display included
    LEVOIT LV450S has a display; the average humidifier does not have a display.
  • 0.06 m longer power cable
    LEVOIT LV450S has a longer power cable than the average humidifier (1.6 m vs 1.51 m).

Total
Overall
Performance
Features
Design
  • 7.9 dB higher maximum noise
    LEVOIT LV450S is louder at maximum output than the average humidifier (41 dB vs 33.1 dB).
  • 256 W higher power draw
    LEVOIT LV450S draws more power than the average humidifier (280 W vs 24 W).
  • 20 % RH lower target humidity
    LEVOIT LV450S supports a lower maximum target humidity than the average humidifier (60% RH vs 80% RH).
  • No LED lighting
    LEVOIT LV450S does not feature LED lighting; the average humidifier features LED lighting.
  • 9.15 cm deeper body
    LEVOIT LV450S has a deeper profile than the average humidifier (27.4 cm vs 18.25 cm).
  • 62.2% heavier
    LEVOIT LV450S is heavier than the average humidifier (2.4 kg vs 1.48 kg).
  • 1.42 cm taller body
    LEVOIT LV450S stands taller than the average humidifier (30.4 cm vs 28.98 cm).
  • 7.9 dB higher maximum noise
    LEVOIT LV450S is louder at maximum output than the average humidifier (41 dB vs 33.1 dB).
    What it is: The highest stated operating sound level across normal humidification modes.
    When it matters: A lower maximum noise level is better for bedrooms, nurseries, calls, and light sleepers.

    Importance: HIGH

    Good value: Up to 35 dB

    LEVOIT LV450S is louder at maximum output than the average humidifier (41 dB vs 33.1 dB).41 dB vs 33.1 dB
  • 256 W higher power draw
    LEVOIT LV450S draws more power than the average humidifier (280 W vs 24 W).
    What it is: The humidifier’s maximum rated electrical power draw.
    When it matters: Lower power draw can reduce electricity use, especially when the humidifier runs for many hours each day.

    Importance: MEDIUM

    Good value: Up to 25 W

    LEVOIT LV450S draws more power than the average humidifier (280 W vs 24 W).280 W vs 24 W
  • 9.15 cm deeper body
    LEVOIT LV450S has a deeper profile than the average humidifier (27.4 cm vs 18.25 cm).
    What it is: The humidifier’s front-to-back depth.
    When it matters: A shallower humidifier needs less usable surface depth on a table or shelf.

    Importance: MEDIUM

    Good value: Up to 20 cm

    LEVOIT LV450S has a deeper profile than the average humidifier (27.4 cm vs 18.25 cm).27.4 cm vs 18.25 cm
  • No LED lighting
    LEVOIT LV450S does not feature LED lighting; the average humidifier features LED lighting.
    What it is: Whether the humidifier includes integrated ambient or night lighting, excluding status-only indicator lights.
    When it matters: Ambient or night lighting can provide a gentle glow without requiring a separate night-light.

    Importance: LOW

    Good value: yes

    LEVOIT LV450S does not feature LED lighting; the average humidifier features LED lighting.
  • 62.2% heavier
    LEVOIT LV450S is heavier than the average humidifier (2.4 kg vs 1.48 kg).
    What it is: The humidifier’s weight without packaging.
    When it matters: A lighter humidifier is easier to move for refilling, cleaning or storage.

    Importance: MEDIUM

    Good value: Up to 1.5 kg

    LEVOIT LV450S is heavier than the average humidifier (2.4 kg vs 1.48 kg).2.4 kg vs 1.48 kg
  • 20 % RH lower target humidity
    LEVOIT LV450S supports a lower maximum target humidity than the average humidifier (60% RH vs 80% RH).
    What it is: The highest relative-humidity target the user can select.
    When it matters: A higher maximum target offers more range for very dry conditions, plant rooms, or specific humidity needs.

    Importance: LOW

    Good value: At least 80% RH

    LEVOIT LV450S supports a lower maximum target humidity than the average humidifier (60% RH vs 80% RH).60 % RH vs 80 % RH
  • 99.8% less popular
    LEVOIT LV450S is less popular than the average humidifier (2.77 vs 5.535).
    What it is: An indicator based on the number of reviews received by products in the Humidifiers category.
    When it matters: When you prefer products in the Humidifiers category that have been chosen and reviewed by many other buyers.
    LEVOIT LV450S is less popular than the average humidifier (2.77 vs 5.535).2.77 vs 5.54
  • 2.57x more expensive
    LEVOIT LV450S is more expensive than the average humidifier (£90 vs £35).
    LEVOIT LV450S is more expensive than the average humidifier (£90 vs £35).£90 vs £35
Total
Overall
Performance
Features
Design

Graphic comparison of LEVOIT LV450S and other products in the Humidifiers category

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Attribute
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Third-party reviews

United Kingdom
amazon
4.2
34 Reviews
United States
Amazon_logo.png
4.5
63 Reviews

(Reviews last updated: August 2026)

What customers like about LEVOIT LV450S?

  • Versatile dual-temperature setting providing both warm and cool mist options
  • Convenient top-fill water tank design that minimizes spills and simplifies refilling
  • Excellent smart connectivity via the VeSync app, enabling remote control and custom schedules
  • Dual 360-degree rotating nozzles that allow for highly precise directional mist placement
  • Whisper-quiet operation, particularly when utilizing the advanced sleep mode
  • Strong and powerful moisture output that quickly increases humidity in medium-to-large rooms
  • Useful dedicated aromatherapy slot for adding essential oils without contaminating the water

What customers dislike about LEVOIT LV450S?

  • High risk of white mineral dust build-up unless distilled or demineralized water is used
  • Inaccurate built-in humidity sensor readouts when the unit is placed too close to a wall
  • Increased power consumption and slightly higher noise levels when operating the warm mist mode
  • Relatively frequent maintenance required, including recommended deep cleanings every few days
  • Lack of real-time humidity level visibility on the physical display panel when the unit is powered off
  • Some internal compartments and tight areas can be difficult to fully access for descaling

Expert reviews

T
techgearlab.com
19/08/2025
Summary of the review
Levoit OasisMist 450S Smart Review | Tested & Rated
M
medgrade.org
18/04/2026
Summary of the review
Levoit OasisMist 450S Smart Humidifier Review - MedGrade
C
consumerreports.org
N/A
Summary of the review
Levoit OasisMist 450s Smart Humidifier Review - Consumer Reports
E
etm-testmagazin.de
16/12/2025
Summary of the review
Levoit OasisMist 450S Smart Review 2025
(Translated)Show original
J
je-suis-papa.ouest-france.fr
18/05/2026
Summary of the review
Levoit OasisMist 450S Humidifier: Full Review
(Translated)Show original
L
lavelab.com
17/11/2025
Summary of the review
The Best Air Humidifiers 2026 | Tested by Lavelab
(Translated)Show original

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