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Airymium 501 Brown Review | 43 Data compared

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  • Avg. price in UK: ~£20
  • Avg. price in US: ~$20
  • Humidification rate: 50 ml/h
  • Maximum room area: 25 m²
  • Water tank capacity: 0.4 L
  • Maximum operating time: 10 hours
  • Maximum noise level: 35 dB

Airymium 501 Brown review. Compare 43 technical specifications and user reviews to see how this product ranks in the Humidifiers category and whether it is worth buying.

5.8

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%

5.3

Technical Score

20.0%

7.9

User score

Good
5.3

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%

3.2

Performance

40.0%

6.5

Features

15.0%

8.0

Design

Good
7.9

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%

8.6

User reviews

30.0%

6.3

Popularity

User score:
United Kingdom
amazon
4.3
(744)

(Reviews last updated: August 2026)

Very good
  • 6.5
    Bedroom use

    Score components:

    35.0%

    6.0

    Maximum noise level

    25.0%

    1.7

    Maximum operating time

    20.0%

    10

    Timer

    20.0%

    10

    Automatic low-water shut-off

  • 2.2
    Large rooms

    Score components:

    35.0%

    1.0

    Humidification rate

    30.0%

    3.8

    Maximum room area

    25.0%

    1.2

    Water tank capacity

    10.0%

    4.0

    Hygrostat

  • 2.5
    Plant care

    Score components:

    30.0%

    4.0

    Hygrostat

    25.0%

    1.0

    Humidification rate

    25.0%

    1.2

    Water tank capacity

    20.0%

    4.0

    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 Airymium 501 Brown is a 3-in-1 ultrasonic cool mist humidifier, aroma diffuser, and night light featuring a 400 ml water tank capacity and a wood-grain design. Operating via advanced 2.4 MHz ultrasonic vibrations, it efficiently hydrates floor areas of 15 to 25 square meters for a runtime of 8 to 10 hours on a single fill. Key benefits include a 7-color adjustable LED light system, four customizable timer settings (1H/3H/6H/ON), and an automated safety shut-off mechanism that triggers when water runs out or the timer expires. However, its small 400 ml capacity requires frequent refilling compared to full-sized room humidifiers, and its performance drops noticeably in larger living environments.

Technical Specifications of humidifier Airymium 501 Brown

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%

3.2

Performance

40.0%

6.5

Features

15.0%

8.0

Design

5.3
Airymium 501 Brown has a technical score of 5.27 points, which is lower than 89.9% 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%

8.6

User reviews

30.0%

6.3

Popularity

User score:
United Kingdom
amazon
4.3
(744)

(Reviews last updated: August 2026)

7.9
Airymium 501 Brown has a user score of 7.9 points, which is lower than 59.7% 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.
6.3
Airymium 501 Brown has a popularity of 6.3 points, which is higher than 51.7% 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%

5.8

Overall score

40.0%

10

Price

7.1
Airymium 501 Brown has a quality-to-price ratio of 7.1 points, which is lower than 67.1% 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

50 ml/h
Airymium 501 Brown delivers a humidification rate of 50 ml/h, which is lower than that of 82.9% of humidifiers and equal to that of 12.1% 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

25 m²
Airymium 501 Brown covers rooms up to 25 m², which is smaller than that of 73.9% of humidifiers and equal to that of 6.3% 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

0.4 L
Airymium 501 Brown has a water tank capacity of 0.4 L, which is smaller than that of 89.3% of humidifiers and equal to that of 2.7% 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

10 hours
Airymium 501 Brown runs for up to 10 hours on a single fill, which is shorter than 81.9% of humidifiers and equal to that of 7.4% 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

no
Airymium 501 Brown does not offer a warm-mist option. A warm-mist option is present in 26.2% 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
Airymium 501 Brown 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

no
Airymium 501 Brown does not include a dedicated aroma compartment. A dedicated aroma compartment is present in 49% 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
Airymium 501 Brown 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

no
Airymium 501 Brown does not include a water-level indicator. A water-level indicator is present in 84.6% of humidifiers.
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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

?
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

black
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

no
Airymium 501 Brown does not have a 360° nozzle. A 360° nozzle is included in 58.4% 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

no
Airymium 501 Brown does not have a display. A display is included in 44.3% of humidifiers.
Show more

Airymium 501 Brown vs the average humidifier

  • 21 W lower power draw
    Airymium 501 Brown draws less power than the average humidifier (3 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

    Airymium 501 Brown draws less power than the average humidifier (3 W vs 24 W).3 W vs 24 W
  • 61.5% lighter
    Airymium 501 Brown is lighter than the average humidifier (0.6 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

    Airymium 501 Brown is lighter than the average humidifier (0.6 kg vs 1.48 kg).0.57 kg vs 1.48 kg
  • 15.98 cm shorter body
    Airymium 501 Brown has a lower profile than the average humidifier (13 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

    Airymium 501 Brown has a lower profile than the average humidifier (13 cm vs 28.98 cm).13 cm vs 28.98 cm
  • 2.56 cm narrower body
    Airymium 501 Brown has a narrower body than the average humidifier (17 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

    Airymium 501 Brown has a narrower body than the average humidifier (17 cm vs 19.555 cm).17 cm vs 19.555 cm
  • 75% cheaper
    Airymium 501 Brown is cheaper than the average humidifier (£20 vs £35).
    Airymium 501 Brown is cheaper than the average humidifier (£20 vs £35).£20 vs £35
  • 1.25 cm shallower body
    Airymium 501 Brown has a shallower depth than the average humidifier (17 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

    Airymium 501 Brown has a shallower depth than the average humidifier (17 cm vs 18.25 cm).17 cm vs 18.25 cm
  • 21 W lower power draw
    Airymium 501 Brown draws less power than the average humidifier (3 W vs 24 W).
  • 61.5% lighter
    Airymium 501 Brown is lighter than the average humidifier (0.6 kg vs 1.48 kg).
  • 15.98 cm shorter body
    Airymium 501 Brown has a lower profile than the average humidifier (13 cm vs 28.98 cm).
  • 2.56 cm narrower body
    Airymium 501 Brown has a narrower body than the average humidifier (17 cm vs 19.555 cm).
  • 1.25 cm shallower body
    Airymium 501 Brown has a shallower depth than the average humidifier (17 cm vs 18.25 cm).

Total
Overall
Performance
Design
  • 80.8% lower humidification rate
    Airymium 501 Brown delivers a lower humidification rate than the average humidifier (50 ml/h vs 260 ml/h).
  • 2.95 L smaller water tank
    Airymium 501 Brown has a smaller water tank than the average humidifier (0.4 L vs 3.35 L).
  • 14 hours shorter runtime
    Airymium 501 Brown runs for a shorter time than the average humidifier (10 hours vs 24 hours).
  • 6 m² less room coverage
    Airymium 501 Brown covers smaller rooms than the average humidifier (25 m² vs 31 m²).
  • 1 levels less mist control
    Airymium 501 Brown offers fewer mist adjustment levels than the average humidifier (2 levels vs 3 levels).
  • 1.9 dB higher maximum noise
    Airymium 501 Brown is louder at maximum output than the average humidifier (35 dB vs 33.1 dB).
  • 6 hours shorter timer
    Airymium 501 Brown provides a shorter timer setting than the average humidifier (6 hours vs 12 hours).
  • No water-level indicator
    Airymium 501 Brown does not include a water-level indicator; the average humidifier includes a water-level indicator.
  • No 360° nozzle
    Airymium 501 Brown does not have a 360° nozzle; the average humidifier has a 360° nozzle.
  • 80.8% lower humidification rate
    Airymium 501 Brown delivers a lower humidification rate than the average humidifier (50 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

    Airymium 501 Brown delivers a lower humidification rate than the average humidifier (50 ml/h vs 260 ml/h).50 ml/h vs 260 ml/h
  • 2.95 L smaller water tank
    Airymium 501 Brown has a smaller water tank than the average humidifier (0.4 L vs 3.35 L).
    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

    Airymium 501 Brown has a smaller water tank than the average humidifier (0.4 L vs 3.35 L).0.4 L vs 3.35 L
  • 6 hours shorter timer
    Airymium 501 Brown provides a shorter timer setting than the average humidifier (6 hours vs 12 hours).
    What it is: The longest period, in hours, that the humidifier timer can be set for.
    When it matters: A longer maximum timer gives you more flexibility for overnight use and unattended operation.

    Importance: MEDIUM

    Good value: At least 12 hours

    Airymium 501 Brown provides a shorter timer setting than the average humidifier (6 hours vs 12 hours).6 hours vs 12 hours
  • 14 hours shorter runtime
    Airymium 501 Brown runs for a shorter time than the average humidifier (10 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

    Airymium 501 Brown runs for a shorter time than the average humidifier (10 hours vs 24 hours).10 hours vs 24 hours
  • No water-level indicator
    Airymium 501 Brown does not include a water-level indicator; the average humidifier includes a 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

    Airymium 501 Brown does not include a water-level indicator; the average humidifier includes a water-level indicator.
  • 6 m² less room coverage
    Airymium 501 Brown covers smaller rooms than the average humidifier (25 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

    Airymium 501 Brown covers smaller rooms than the average humidifier (25 m² vs 31 m²).25 m² vs 31 m²
  • 1 levels less mist control
    Airymium 501 Brown offers fewer mist adjustment levels than the average humidifier (2 levels vs 3 levels).
    What it is: The number of manually selectable mist-output levels.
    When it matters: More levels provide finer control over moisture output, noise, and water use.

    Importance: MEDIUM

    Good value: At least 3 levels

    Airymium 501 Brown offers fewer mist adjustment levels than the average humidifier (2 levels vs 3 levels).2 levels vs 3 levels
  • No 360° nozzle
    Airymium 501 Brown 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

    Airymium 501 Brown does not have a 360° nozzle; the average humidifier has a 360° nozzle.
Total
Overall
Performance
Features
Design

Graphic comparison of Airymium 501 Brown and other products in the Humidifiers category

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Third-party reviews

United Kingdom
amazon
4.3
744 Reviews

(Reviews last updated: August 2026)

What customers like about Airymium 501 Brown?

  • Aesthetic wood-grain design that blends well with home decor
  • Whisper-quiet ultrasonic operation, ideal for bedrooms and nurseries
  • Versatile 2-in-1 functionality serving as both a humidifier and essential oil aroma diffuser
  • Convenient automatic shut-off feature for safety when the water runs out or the timer finishes
  • Customizable settings including multiple timer options (1, 3, or 6 hours) and continuous or intermittent mist modes
  • Built-in 7-color LED lights that act as relaxing mood lighting or night lights

What customers dislike about Airymium 501 Brown?

  • Limited capacity (typically 400ml), which requires frequent refilling compared to larger room consoles
  • Not suitable for very large rooms; best for small to medium-sized spaces
  • Diffuser and nozzle may require regular cleaning and maintenance to prevent essential oil buildup

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