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LEVOIT Superior Studio Smart 450S Review | 43 Data compared

Avg. price: ~£90
Humidification rate: 400 ml/h
Maximum room area: 55.74 m²
Water tank capacity: 4.5 L
Maximum operating time: 40 hours
Maximum noise level: 45 dB

LEVOIT Superior Studio Smart 450S review. Compare 43 technical specifications and user reviews to see how this product ranks in the Humidifiers category and whether it is worth buying.

7.6

Very good

7.6

Very good

7.4

Very good

6.4
Bedroom use
Score components:
35.0%
1.0
Maximum noise level
25.0%
8.2
Maximum operating time
20.0%
10
Timer
20.0%
10
Automatic low-water shut-off
9.4
Large rooms
Score components:
35.0%
10
Humidification rate
30.0%
10
Maximum room area
25.0%
7.6
Water tank capacity
10.0%
10
Hygrostat
8.2
Plant care
Score components:
30.0%
10
Hygrostat
25.0%
10
Humidification rate
25.0%
7.6
Water tank capacity
20.0%
4.0
360° nozzle

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Verdict

The Levoit OasisMist 450S Smart Humidifier is a hybrid ultrasonic and steam device engineered for large rooms spanning 215 to 430 square feet, delivering a powerful maximum mist output of 550 mL/h from its 4.5-litre top-fill water tank. It features dual 360-degree rotating nozzles, an integrated aromatherapy tray for essential oils, automated target humidity control, and seamless remote scheduling via the VeSync mobile app alongside Alexa or Google Assistant compatibility. Operating at an ultra-quiet noise level as low as 26 decibels, its primary advantages include rapid seasonal relief through customizable warm and cool mist settings, a user-friendly wide-opening tank design, and a dedicated sleep mode that dims display indicators. However, notable drawbacks include its higher power consumption when running in warm mist mode, a risk of mineral white dust dispersion if not used with distilled water, and an integrated humidity sensor that some users report can be slightly inaccurate.

Technical Specifications of humidifier LEVOIT Superior Studio Smart 450S

Overall score

7.6

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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.

Performance

8.3

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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

evaporative

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

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

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

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

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Features

7.8

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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

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

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

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

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

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Design

5.3

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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

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

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LEVOIT Superior Studio Smart 450S vs the average humidifier

Why is LEVOIT Superior Studio Smart 450S better than the average humidifier?

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24.74 m² more room coverage
LEVOIT Superior Studio Smart 450S covers larger rooms than the average humidifier (55.7 m² vs 31 m²).
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
LEVOIT Superior Studio Smart 450S covers larger rooms than the average humidifier (55.7 m² vs 31 m²).55.74 m² vs 31 m²
53.8% higher humidification rate
LEVOIT Superior Studio Smart 450S delivers a higher humidification rate than the average humidifier (400 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 Superior Studio Smart 450S delivers a higher humidification rate than the average humidifier (400 ml/h vs 260 ml/h).400 ml/h vs 260 ml/h
Wi-Fi control
LEVOIT Superior Studio Smart 450S 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 Superior Studio Smart 450S supports Wi-Fi control; the average humidifier does not support Wi-Fi control.
Voice control supported
LEVOIT Superior Studio Smart 450S supports voice control; the average humidifier does not support voice control.
Supports Amazon Alexa and Google Assistant.
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 Superior Studio Smart 450S supports voice control; the average humidifier does not support voice control.
Hygrostat included
LEVOIT Superior Studio Smart 450S 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 Superior Studio Smart 450S has a hygrostat; the average humidifier has no hygrostat.
Washable filter
LEVOIT Superior Studio Smart 450S includes a washable filter; the average humidifier does not include a washable filter.
What it is: Indicates whether the humidifier uses a filter that can be cleaned and reused.
When it matters: A washable filter can reduce replacement needs, though it still requires regular cleaning.
Importance: MEDIUM
Good value: yes
LEVOIT Superior Studio Smart 450S includes a washable filter; the average humidifier does not include a washable filter.
16 hours longer runtime
LEVOIT Superior Studio Smart 450S runs longer on a single fill than the average humidifier (40 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 Superior Studio Smart 450S runs longer on a single fill than the average humidifier (40 hours vs 24 hours).40 hours vs 24 hours
Display included
LEVOIT Superior Studio Smart 450S has a display; the average humidifier does not have a 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
LEVOIT Superior Studio Smart 450S has a display; the average humidifier does not have a display.
24.74 m² more room coverage
LEVOIT Superior Studio Smart 450S covers larger rooms than the average humidifier (55.7 m² vs 31 m²).
53.8% higher humidification rate
LEVOIT Superior Studio Smart 450S delivers a higher humidification rate than the average humidifier (400 ml/h vs 260 ml/h).
Hygrostat included
LEVOIT Superior Studio Smart 450S has a hygrostat; the average humidifier has no hygrostat.
16 hours longer runtime
LEVOIT Superior Studio Smart 450S runs longer on a single fill than the average humidifier (40 hours vs 24 hours).
1.15 L larger water tank
LEVOIT Superior Studio Smart 450S has a larger water tank than the average humidifier (4.5 L vs 3.35 L).
10 % RH lower target humidity
LEVOIT Superior Studio Smart 450S supports a lower target humidity setting than the average humidifier (30% RH vs 40% RH).
12 W lower power draw
LEVOIT Superior Studio Smart 450S draws less power than the average humidifier (12 W vs 24 W).
Wi-Fi control
LEVOIT Superior Studio Smart 450S supports Wi-Fi control; the average humidifier does not support Wi-Fi control.
Voice control supported
LEVOIT Superior Studio Smart 450S supports voice control; the average humidifier does not support voice control.
Washable filter
LEVOIT Superior Studio Smart 450S includes a washable filter; the average humidifier does not include a washable filter.
12 hours longer timer
LEVOIT Superior Studio Smart 450S provides a longer timer setting than the average humidifier (24 hours vs 12 hours).
Display included
LEVOIT Superior Studio Smart 450S has a display; the average humidifier does not have a display.
0.06 m longer power cable
LEVOIT Superior Studio Smart 450S has a longer power cable than the average humidifier (1.6 m vs 1.51 m).

Why is LEVOIT Superior Studio Smart 450S worse than the average humidifier?

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11.9 dB higher maximum noise
LEVOIT Superior Studio Smart 450S is louder at maximum output than the average humidifier (45 dB vs 33.1 dB).
No aromatherapy support
LEVOIT Superior Studio Smart 450S does not support aromatherapy; the average humidifier supports aromatherapy.
No LED lighting
LEVOIT Superior Studio Smart 450S does not feature LED lighting; the average humidifier features LED lighting.
87.2% heavier
LEVOIT Superior Studio Smart 450S is heavier than the average humidifier (2.8 kg vs 1.48 kg).
No 360° nozzle
LEVOIT Superior Studio Smart 450S does not have a 360° nozzle; the average humidifier has a 360° nozzle.
11.12 cm taller body
LEVOIT Superior Studio Smart 450S stands taller than the average humidifier (40.1 cm vs 28.98 cm).
4.75 cm deeper body
LEVOIT Superior Studio Smart 450S has a deeper profile than the average humidifier (23 cm vs 18.25 cm).
3.55 cm wider body
LEVOIT Superior Studio Smart 450S has a wider body than the average humidifier (23.1 cm vs 19.555 cm).
11.9 dB higher maximum noise
LEVOIT Superior Studio Smart 450S is louder at maximum output than the average humidifier (45 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 Superior Studio Smart 450S is louder at maximum output than the average humidifier (45 dB vs 33.1 dB).45 dB vs 33.1 dB
No aromatherapy support
LEVOIT Superior Studio Smart 450S does not support aromatherapy; the average humidifier supports aromatherapy.
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
LEVOIT Superior Studio Smart 450S does not support aromatherapy; the average humidifier supports aromatherapy.
87.2% heavier
LEVOIT Superior Studio Smart 450S is heavier than the average humidifier (2.8 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 Superior Studio Smart 450S is heavier than the average humidifier (2.8 kg vs 1.48 kg).2.77 kg vs 1.48 kg
No LED lighting
LEVOIT Superior Studio Smart 450S 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 Superior Studio Smart 450S does not feature LED lighting; the average humidifier features LED lighting.
No 360° nozzle
LEVOIT Superior Studio Smart 450S does not have a 360° nozzle; the average humidifier has a 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
LEVOIT Superior Studio Smart 450S does not have a 360° nozzle; the average humidifier has a 360° nozzle.
11.12 cm taller body
LEVOIT Superior Studio Smart 450S stands taller than the average humidifier (40.1 cm vs 28.98 cm).
What it is: The humidifier’s total height from its base to its highest point.
When it matters: A shorter humidifier fits more easily beneath shelves and in low spaces.
Importance: LOW
Good value: Up to 25 cm
LEVOIT Superior Studio Smart 450S stands taller than the average humidifier (40.1 cm vs 28.98 cm).40.1 cm vs 28.98 cm
4.75 cm deeper body
LEVOIT Superior Studio Smart 450S has a deeper profile than the average humidifier (23 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 Superior Studio Smart 450S has a deeper profile than the average humidifier (23 cm vs 18.25 cm).23 cm vs 18.25 cm
3.55 cm wider body
LEVOIT Superior Studio Smart 450S has a wider body than the average humidifier (23.1 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 Superior Studio Smart 450S has a wider body than the average humidifier (23.1 cm vs 19.555 cm).23.1 cm vs 19.555 cm

Graphic comparison of LEVOIT Superior Studio Smart 450S and other products in the Humidifiers category

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Third-party reviews

United Kingdom

United States

(Reviews last updated: August 2026)

What customers like about LEVOIT Superior Studio Smart 450S?

Versatile dual mist capability allows switching between warm and cool moisture settings
Convenient top-fill design makes refilling and basic cleaning effortless
Smart connectivity via the VeSync app enables easy remote scheduling and humidity monitoring
Whisper-quiet operation and sleep mode make it ideal for bedrooms and nurseries
Powerful and fast humidification performance capable of handling large rooms
Built-in accurate humidistat maintains target ambient humidity automatically
Dedicated aromatherapy pad allows the addition of essential oils

What customers dislike about LEVOIT Superior Studio Smart 450S?

High energy consumption when using the warm mist steam mode continuously
Shorter runtime and frequent refills required when both mist modes run simultaneously
Risk of white mineral dust buildup on surfaces unless distilled or demineralized water is used
Frequent maintenance required, including deep-cleaning the base unit's tight corners every few days
Water tank does not physically lock into the base, requiring caution when moving the unit
Noticeable water dripping or boiling sounds can occur during high-output operation

Expert reviews

techgearlab.com

19/08/2025

Summary of the review

Levoit OasisMist 450S Smart Review | Tested & Rated

The TechGearLab review of the Levoit OasisMist 450S Smart praises the hybrid unit for its powerful, versatile warm/cool mist performance and excellent app control, making it ideal for large rooms. Key drawbacks highlighted include high power consumption, a shorter runtime, potential white dust, and a small reservoir that limits high-output operation.

consumerreports.org

01/10/2023

Summary of the review

Levoit OasisMist 450s Smart Humidifier Review - Consumer Reports

The Consumer Reports review of the Levoit OasisMist 450S Smart humidifier highlights its exceptional moisture output, near-silent operation, and convenient smart app integration for scheduling and monitoring. While praised for its versatile, top-fill design, the unit's main limitations include high power consumption in warm-mist mode, the necessity of using demineralized water to prevent dust, and a relatively small 4.5-liter tank that requires frequent refilling.

etm-testmagazin.de

16. Dezember 2025

Summary of the review

Levoit OasisMist 450S Smart Review 2025

ETM Testmagazin awarded the Levoit OasisMist 450S Smart humidifier a "very good" (96.0%) rating for its high performance and modern features, including impressive moisture output and flexible warm/cool mist settings. The 2025 review also highlights the device's intuitive app control and efficient scheduling, though it notes the necessity for frequent cleaning every three days and the recommended use of distilled water to manage maintenance.

je-suis-papa.ouest-france.fr

18/05/2026

Summary of the review

Levoit OasisMist 450S Humidifier: Full Review and Analysis

The Levoit OasisMist 450S is a premium smart humidifier suitable for nurseries, offering a 4.5-liter tank, quiet operation, and VeSync app connectivity, according to a review on Je Suis Papa. Key advantages include its efficient ultrasonic technology and high-capacity runtime, while limitations involve difficult cleaning of the water basin and subtle noise when using the warm mist feature.

lavelab.com

17/11/2025

Summary of the review

The Best Air Humidifiers 2026 | Tested by Lavelab

The air humidifier review on Lavelab highlights a high-performing smart model featuring a 4.5-liter tank, 360° rotating nozzle, and seamless VeSync app integration for efficient, automated, and quiet moisture control. While the device excels at rapid humidification and smart automation, it is limited by difficult maintenance, as several sections of the water tank remain inaccessible for proper cleaning.

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