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LEVOIT Superior Studio Smart 450S review: 43 specs compared

Avg. price:~£90Humidification rate:400 ml/hMaximum room area:55.74 m²Water tank capacity:4.5 LMaximum operating time:40 hoursMaximum noise level:45 dB

LEVOIT Superior Studio Smart 450S Review: Compare 168 technical specifications and user reviews to see how this product ranks in the Humidifiers category and whether it is worth buying.

LEVOIT Superior Studio Smart 450S
7.7/10

Overall score

Score
7.7/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 79% of models
Score components

80%

7.6

Technical score

20%

7.9

User score

â–²Better than 79% of humidifiers
7.8

Value for money

Value for money
7.8/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 60% of models
Score components

70%

7.7

Overall score

30%

8.2

Price

â–²Better than 60%
7.6

Technical score

Technical score
7.6/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 80% of models
Score components

45%

8.3

Performance

40%

7.8

Features

15%

5.3

Design

â–²Better than 80%
7.9

User score

User score
7.9/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 61% of models
Score components

70%

8.8

User ratings

30%

5.7

Number of reviews

Based on ratings from across the web.
â–¼Worse than 61%
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Best prices
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Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of humidifier LEVOIT Superior Studio Smart 450S

Technical score
Technical score
7.6/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 80% of models
Score components:

45%

8.3

Performance

40%

7.8

Features

15%

5.3

Design

7.6
User score
User score
7.9/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 61% of models
Score components

70%

8.8

User ratings

30%

5.7

Number of reviews

Based on ratings from across the web.
7.9
Popularity
Popularity
5.7/ 10
✕
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.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 66% of models
Popularity:
LEVOIT Superior Studio Smart 450S has a popularity score of 5.7 points, which is lower than 63.1% of products in this category.
5.7
Value for money
Value for money
7.8/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 60% of models
Score components:

70%

7.7

Overall score

30%

8.2

Price

7.8
Technology
evaporative
Humidification rate
400 ml/h
Market range: <50 ml/h – >500 ml/h
This humidifier delivers a humidification rate of 400 ml/h, which is higher than that of 83.6% of humidifiers and equal to that of 2.9% of humidifiers.
Maximum room area
55.74 m²
Market range: <20 m² – >60 m²
This humidifier covers rooms up to 55.74 m², which is larger than that of 86.6% of humidifiers and equal to that of 2.1% of humidifiers.
Water tank capacity
4.5 L
Market range: <0.4 L – >6.5 L
This humidifier 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
40 hours
Market range: <8 hours – >60 hours
This humidifier runs for up to 40 hours on a single fill, which is longer than 74.5% of humidifiers and equal to that of 5.4% of humidifiers.
Show more
Warm mist function
no
This humidifier does not offer a warm-mist option. A warm-mist option is present in 26.2% of humidifiers.
Aromatherapy support
no
This humidifier does not support aromatherapy. Aromatherapy support is available in 74.5% of humidifiers.
Dedicated aroma compartment
no
This humidifier does not include a dedicated aroma compartment. A dedicated aroma compartment is present in 49% of humidifiers.
Automatic low-water shut-off
yes
This humidifier shuts off automatically when water runs low. Automatic low-water shut-off is available in 99.3% of humidifiers.
Water level indicator
yes
This humidifier includes a water-level indicator. A water-level indicator is present in 83.9% of humidifiers.
Show more
Fill type
top fill
Color
white
Material
plastic
360° nozzle
no
This humidifier does not have a 360° nozzle. A 360° nozzle is included in 58.4% of humidifiers.
Display
yes
This humidifier has a display. A display is included in 43.6% of humidifiers.
Show more

LEVOIT Superior Studio Smart 450S vs the average humidifier

246810TotalPerformanceFeaturesDesign
  • 24.74 m² more room coverage
    This humidifier covers larger rooms than the average humidifier (55.7 m² vs 31 m²).
    55.74 m² vs 31 m²
  • 53.8% higher humidification rate
    This humidifier 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
    This humidifier supports Wi-Fi control; the average humidifier does not support Wi-Fi control.
  • Voice control supported
    This humidifier supports voice control; the average humidifier does not support voice control.
    Supports Amazon Alexa and Google Assistant.
  • Hygrostat included
    This humidifier has a hygrostat; the average humidifier has no hygrostat.
  • Washable filter
    This humidifier includes a washable filter; the average humidifier does not include a washable filter.
  • 16 hours longer runtime
    This humidifier runs longer on a single fill than the average humidifier (40 hours vs 24 hours).
    40 hours vs 24 hours
  • Display included
    This humidifier has a display; the average humidifier does not have a display.
  • 3.7% better value for money
    LEVOIT Superior Studio Smart 450S offers better value for money than the average humidifier (7.83 vs 7.6).
    7.83 vs 7.56
  • 24.74 m² more room coverage
    This humidifier covers larger rooms than the average humidifier (55.7 m² vs 31 m²).
    55.74 m² vs 31 m²
  • 53.8% higher humidification rate
    This humidifier delivers a higher humidification rate than the average humidifier (400 ml/h vs 260 ml/h).
    400 ml/h vs 260 ml/h
  • Hygrostat included
    This humidifier has a hygrostat; the average humidifier has no hygrostat.
  • 16 hours longer runtime
    This humidifier runs longer on a single fill than the average humidifier (40 hours vs 24 hours).
    40 hours vs 24 hours
  • 1.15 L larger water tank
    This humidifier has a larger water tank than the average humidifier (4.5 L vs 3.35 L).
    4.5 L vs 3.35 L
  • 10 % RH lower target humidity
    This humidifier supports a lower target humidity setting than the average humidifier (30 % RH vs 40 % RH).
    30 % RH vs 40 % RH
  • 12 W lower power draw
    This humidifier draws less power than the average humidifier (12 W vs 24 W).
    12 W vs 24 W
  • Wi-Fi control
    This humidifier supports Wi-Fi control; the average humidifier does not support Wi-Fi control.
  • Voice control supported
    This humidifier supports voice control; the average humidifier does not support voice control.
    Supports Amazon Alexa and Google Assistant.
  • Washable filter
    This humidifier includes a washable filter; the average humidifier does not include a washable filter.
  • 12 hours longer timer
    This humidifier provides a longer timer setting than the average humidifier (24 hours vs 12 hours).
    24 hours vs 12 hours
  • Display included
    This humidifier has a display; the average humidifier does not have a display.
  • 0.06 m longer power cable
    This humidifier has a longer power cable than the average humidifier (1.6 m vs 1.51 m).
    1.57 m vs 1.51 m
  • 11.9 dB higher maximum noise
    This humidifier is louder at maximum output than the average humidifier (45 dB vs 33.1 dB).
    45 dB vs 33.1 dB
  • No aromatherapy support
    This humidifier does not support aromatherapy; the average humidifier supports aromatherapy.
  • 87.2% heavier
    This humidifier is heavier than the average humidifier (2.8 kg vs 1.48 kg).
    2.77 kg vs 1.48 kg
  • No LED lighting
    This humidifier does not feature LED lighting; the average humidifier features LED lighting.
  • No 360° nozzle
    This humidifier does not have a 360° nozzle; the average humidifier has a 360° nozzle.
  • 11.12 cm taller body
    This humidifier 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
    This humidifier 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
    This humidifier has a wider body than the average humidifier (23.1 cm vs 19.6 cm).
    23.1 cm vs 19.555 cm
  • 2.57x more expensive
    LEVOIT Superior Studio Smart 450S is more expensive than the average humidifier (£90 vs £35).
    £90 vs £35
  • 11.8% less popular
    LEVOIT Superior Studio Smart 450S is less popular than the average humidifier (5.72 vs 6.4).
    5.72 vs 6.4
  • 1.6% lower user score
    User score
    7.9/ 10
    ✕
    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 distribution
    ▼▼
    <55-66-77-88-99-10
    LEVOIT Superior Studio Smart 450S
    the average humidifier
    LEVOIT Superior Studio Smart 450S has a lower user score than the average humidifier (7.88 vs 8.000).
    7.88 vs 8
  • 11.9 dB higher maximum noise
    This humidifier is louder at maximum output than the average humidifier (45 dB vs 33.1 dB).
    45 dB vs 33.1 dB
  • No aromatherapy support
    This humidifier does not support aromatherapy; the average humidifier supports aromatherapy.
  • No LED lighting
    This humidifier does not feature LED lighting; the average humidifier features LED lighting.
  • 87.2% heavier
    This humidifier is heavier than the average humidifier (2.8 kg vs 1.48 kg).
    2.77 kg vs 1.48 kg
  • No 360° nozzle
    This humidifier does not have a 360° nozzle; the average humidifier has a 360° nozzle.
  • 11.12 cm taller body
    This humidifier 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
    This humidifier 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
    This humidifier has a wider body than the average humidifier (23.1 cm vs 19.6 cm).
    23.1 cm vs 19.555 cm

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Expert reviews

In-depth analysis and verdict from leading tech publications

T
techgearlab.com
19/08/2025
Summary of the review
Levoit OasisMist 450S Smart Review | Tested & Rated
C
consumerreports.org
01/10/2023
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 and Analysis
(Translated)Show original
L
lavelab.com
17/11/2025
Summary of the review
The Best Air Humidifiers 2026 | Tested by Lavelab
(Translated)Show original

Third-party reviews

Based on ratings from across the web.
Reviews last updated: August 2026 · How we calculate this

What we 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 we don't like 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

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.

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