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BLU 09 Review | 44 Data compared

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  • Avg. price in UK: ~£370
  • Avg. price in US: ~$480
  • Cooling capacity: 9,000 BTU/h
  • Maximum room size: 20 m²
  • Maximum noise level: 64 dB
  • Heating function: no
  • Cooling Energy Efficiency Class: A

BLU 09 review. Compare 44 technical specifications and user reviews to see how this product ranks in the Portable Air Conditioners category and whether it is worth buying.

6.9

Overall score

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

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

Score components:

80.0%

6.3

Technical Score

20.0%

9.2

User score

Good
6.3

Technical Score

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

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

Score components:

55.0%

5.3

Performance

30.0%

7.1

Features

15.0%

8.5

Design

Good
9.2

User score

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

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

Score components:

70.0%

9.2

User reviews

30.0%

9.3

Popularity

User score:
United Kingdom
amazon
4.6
(561)

(Reviews last updated: August 2026)

Exceptional
  • 7.4
    Bedroom use

    Score components:

    35.0%

    2.5

    Maximum noise level

    25.0%

    10

    Night mode

    20.0%

    10

    Timer

    20.0%

    10

    Remote control

  • 4.3
    Large rooms

    Score components:

    40.0%

    4.6

    Cooling capacity

    30.0%

    2.5

    Maximum room size

    20.0%

    3.6

    Airflow (high speed)

    10.0%

    10

    Airflow direction control

  • 5.3
    Year-round use

    Score components:

    40.0%

    4.0

    Heating function

    30.0%

    4.3

    Dehumidification capacity

    20.0%

    8.0

    Cooling energy efficiency class

    10.0%

    ?

    Automatic fan speed

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Best prices in UK

Best rankings

?

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

Verdict

The BLU 09 is a 3-in-1 portable air conditioner with 9,000 BTU of cooling power, designed for rooms of roughly 20–23 m². It also works as a three-speed fan and dehumidifier, uses efficient R290 refrigerant, and includes auto-swing, an LED display, remote control, timer and castors. The self-evaporating condensate system reduces manual draining and the window kit simplifies setup. It is limited to cooling rather than heating, weighs around 26.5 kg, and its 49–53 dBA operating noise may be noticeable, especially at night.

Technical Specifications of portable air conditioner BLU 09

Technical Score

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

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

Score components:

55.0%

5.3

Performance

30.0%

7.1

Features

15.0%

8.5

Design

6.3
BLU 9 has a technical score of 6.31 points, which is lower than 64.7% 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 Portable Air Conditioners category.

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

Score components:

70.0%

9.2

User reviews

30.0%

9.3

Popularity

User score:
United Kingdom
amazon
4.6
(561)

(Reviews last updated: August 2026)

9.2
BLU 9 has a user score of 9.24 points, which is higher than 99.5% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by products in the Portable Air Conditioners category.
When it matters: When you prefer products in the Portable Air Conditioners category that have been chosen and reviewed by many other buyers.
9.3
BLU 9 has a popularity of 9.3 points, which is higher than 87.4% of products in this category.
Ratio quality/price

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

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

Score components:

60.0%

6.9

Overall score

40.0%

7.3

Price

7.0
BLU 9 has a quality-to-price ratio of 7 points, which is lower than 52.6% of products in this category.
Cooling capacity
What it is: Cooling capacity is the amount of heat the air conditioner can remove per hour, measured in BTU/h.
When it matters: Higher capacity cools larger or warmer rooms more effectively, provided the unit is sized correctly.

Importance: HIGH

Good value: At least 12,000 BTU/h

9,000 BTU/h
BLU 9 delivers 9000 BTU/h cooling capacity, which is higher than that of 26.6% of portable air conditioners and equal to that of 30.3% of portable air conditioners.
Rated input power
What it is: Rated input power is the electrical power the unit draws at its specified operating point, measured in watts.
When it matters: Lower rated input power reduces electrical demand, though cooling efficiency also depends on delivered capacity.

Importance: HIGH

Good value: Up to 1,200 W

1,050 W
BLU 9 draws 1050 W, which is higher than the power draw of 57.1% of portable air conditioners and equal to that of 3.6% of portable air conditioners.
Cooling-mode power draw.
Cooling Energy Efficiency Class
What it is: Cooling energy efficiency class summarizes the efficiency of the unit while cooling, from higher to lower letter grades.
When it matters: A higher cooling efficiency class indicates more cooling output for the electricity consumed.

Importance: HIGH

Good value: A or better

A
BLU 9 has cooling energy efficiency class A, which ranks lower than 10.7% of portable air conditioners and equal to 89.4% of portable air conditioners.
Official EU cooling energy efficiency class.
Heating energy efficiency class
What it is: Heating energy efficiency class summarizes energy efficiency when the unit operates in heating mode.
When it matters: A higher heating efficiency class matters when the portable air conditioner will also provide regular space heating.

Importance: LOW

Good value: A or better

?
Number of speeds
What it is: The number of selectable fan speeds determines how finely airflow and noise can be adjusted.
When it matters: More speed settings make it easier to balance cooling intensity, sound, and comfort.

Importance: MEDIUM

Good value: At least 3 speeds

3
BLU 9 offers 3 fan speeds, which is more than 36.8% of portable air conditioners and equal to 61.1% of portable air conditioners.
Manual discrete fan-speed levels counted; automatic and continuous modes were excluded.
Show more
Fan-only mode
What it is: Fan-only mode circulates room air without running the refrigeration cycle.
When it matters: This mode provides lower-power airflow when cooling is unnecessary.

Importance: MEDIUM

Good value: yes

yes
BLU 9 includes a fan-only mode. 99.5% of portable air conditioners support this mode.
Airflow direction control
What it is: Airflow direction control describes whether outlet air can be aimed automatically, manually, or not at all.
When it matters: Better directional control spreads conditioned air more evenly without repositioning the unit.

Importance: MEDIUM

Good value: automatic

automatic
BLU 9 provides automatic airflow direction control, which ranks higher than 47.3% of portable air conditioners and equal to 52.7% of portable air conditioners.
Night mode
What it is: Night mode adjusts operation for sleeping hours, typically reducing sound, light, or abrupt temperature changes.
When it matters: Night mode is useful when the unit runs in a bedroom or other light- and noise-sensitive space.

Importance: MEDIUM

Good value: yes

yes
BLU 9 includes a dedicated night mode. 74.3% of portable air conditioners offer night mode.
Timer
What it is: A timer lets the unit start, stop, or change operation after a scheduled interval.
When it matters: Timer control helps cool a room before use and avoids running the unit longer than necessary.

Importance: MEDIUM

Good value: yes

yes
BLU 9 includes a built-in timer. 99.5% of portable air conditioners feature a timer.
Maximum timer duration
What it is: Maximum timer duration is the longest interval that can be scheduled before automatic operation changes.
When it matters: A longer timer window offers more flexibility for overnight use and advance scheduling.

Importance: MEDIUM

Good value: At least 24 hours

24 hours
BLU 9 supports a timer of up to 24 hours, which is longer than that of 7.4% of portable air conditioners and equal to that of 92.6% of portable air conditioners.
Show more
Color
What it is: Color describes the main exterior finish of the portable air conditioner.
When it matters: Finish color matters when the unit will remain visible and should suit the room decor.

Importance: LOW

white
Display
What it is: A display shows settings such as target temperature, operating mode, or timer status on the unit.
When it matters: A display makes current settings easier to check without opening an app or using the remote.

Importance: LOW

Good value: yes

yes
BLU 9 includes an integrated display. 99.5% of portable air conditioners feature a display.
Control type
What it is: Control type identifies whether settings are entered through touch controls, physical buttons, or both.
When it matters: The interface style affects tactile feedback, cleaning, accessibility, and ease of use.

Importance: LOW

physical
Remote control
What it is: A remote control operates core functions from across the room without touching the unit.
When it matters: Remote access is convenient when the air conditioner is beside a window, across the room, or used from bed.

Importance: LOW

Good value: yes

yes
BLU 9 comes with a remote control. 99% of portable air conditioners include a remote.
Handles
What it is: Integrated handles provide secure grip points for moving or repositioning the unit.
When it matters: Handles reduce awkward lifting when the air conditioner is moved between rooms or stored.

Importance: LOW

Good value: yes

yes
BLU 9 includes built-in handles for easier carrying. 99.5% of portable air conditioners feature handles.
Show more

BLU 09 vs the average portable air conditioner

  • 0.2 m longer power cord
    BLU 9 has a longer power cord than the average portable air conditioner (2 m vs 1.8 m).
    What it is: Power cord length is the distance the unit can reach from a wall outlet without an extension lead.
    When it matters: A longer cord makes safe placement easier when suitable outlets are limited.

    Importance: LOW

    Good value: At least 1.8 m

    BLU 9 has a longer power cord than the average portable air conditioner (2 m vs 1.8 m).2 m vs 1.8 m
  • 2 dB quieter minimum operation
    BLU 9 is quieter at minimum output than the average portable air conditioner (49 dB vs 51 dB).
    Lowest stated operating noise.
    What it is: Minimum noise level is the quietest stated sound output, normally reached at a reduced fan setting.
    When it matters: Lower minimum noise is valuable in bedrooms, home offices, and other quiet spaces.

    Importance: MEDIUM

    Good value: Up to 50 dB

    BLU 9 is quieter at minimum output than the average portable air conditioner (49 dB vs 51 dB).49 dB vs 51 dB
  • 15.5% higher user score
    BLU 9 has a higher user score than the average portable air conditioner (9.24 vs 8).
    What it is: A rating that combines user reviews with the total review volume for products in the Portable Air Conditioners category.
    When it matters: When you want to know how products in the Portable Air Conditioners category perform in everyday use and how reliable owners find them over time.
    BLU 9 has a higher user score than the average portable air conditioner (9.24 vs 8).9.24 vs 8
  • 10 m³/h higher low-speed airflow
    BLU 9 delivers higher low-speed airflow than the average portable air conditioner (260 m³/h vs 250 m³/h).
    What it is: Low-speed airflow is the volume of air moved per hour at the quietest or lowest fan setting.
    When it matters: Higher low-speed airflow maintains stronger circulation when reduced noise is preferred.

    Importance: MEDIUM

    Good value: At least 250 m³/h

    BLU 9 delivers higher low-speed airflow than the average portable air conditioner (260 m³/h vs 250 m³/h).260 m³/h vs 250 m³/h
  • 55.3% more popular
    BLU 9 is more popular than the average portable air conditioner (9.32 vs 6.005).
    What it is: An indicator based on the number of reviews received by products in the Portable Air Conditioners category.
    When it matters: When you prefer products in the Portable Air Conditioners category that have been chosen and reviewed by many other buyers.
    BLU 9 is more popular than the average portable air conditioner (9.32 vs 6.005).9.32 vs 6.01
  • 2 dB quieter minimum operation
    BLU 9 is quieter at minimum output than the average portable air conditioner (49 dB vs 51 dB).
  • 10 m³/h higher low-speed airflow
    BLU 9 delivers higher low-speed airflow than the average portable air conditioner (260 m³/h vs 250 m³/h).
  • 0.2 m longer power cord
    BLU 9 has a longer power cord than the average portable air conditioner (2 m vs 1.8 m).

Total
Overall
Performance
Design
  • 10 m² smaller room coverage
    BLU 9 covers a smaller room area than the average portable air conditioner (20 m² vs 30 m²).
    Maximum recommended cooling area in m².
  • 2 °C lower maximum temperature
    BLU 9 has a lower maximum temperature setting than the average portable air conditioner (30 °C vs 32 °C).
  • 30 m³/h lower high-speed airflow
    BLU 9 delivers lower high-speed airflow than the average portable air conditioner (320 m³/h vs 350 m³/h).
  • 50 W higher rated power draw
    BLU 9 draws more power than the average portable air conditioner (1050 W vs 1000 W).
    Cooling-mode power draw.
  • 3.6 l/24 h lower dehumidification capacity
    BLU 9 offers lower moisture removal than the average portable air conditioner (28.8 l/24 h vs 32.4 l/24 h).
  • 9.5 cm taller cabinet
    BLU 9 is taller than the average portable air conditioner (80.5 cm vs 71 cm).
  • 42.5 cm wider cabinet
    BLU 9 is wider than the average portable air conditioner (80.5 cm vs 38 cm).
  • 3.9% higher weight
    BLU 9 is heavier than the average portable air conditioner (26.5 kg vs 25.5 kg).
  • 2.26x larger external volume
    BLU 9 has a larger external volume than the average portable air conditioner (231993 cm³ vs 102623.407656 cm³).
  • 0.3 cm deeper cabinet
    BLU 9 is deeper than the average portable air conditioner (35.8 cm vs 35.5 cm).
  • 10 m² smaller room coverage
    BLU 9 covers a smaller room area than the average portable air conditioner (20 m² vs 30 m²).
    Maximum recommended cooling area in m².
    What it is: Maximum room size is the largest floor area the manufacturer recommends the unit should cool.
    When it matters: A larger rated area is important when cooling open-plan spaces or larger rooms.

    Importance: HIGH

    Good value: At least 30 m²

    BLU 9 covers a smaller room area than the average portable air conditioner (20 m² vs 30 m²).20 m² vs 30 m²
  • 2 °C lower maximum temperature
    BLU 9 has a lower maximum temperature setting than the average portable air conditioner (30 °C vs 32 °C).
    What it is: Maximum set temperature is the highest thermostat target available in the unit controls.
    When it matters: A higher maximum setting provides a broader adjustment range, especially on models with heating.

    Importance: LOW

    Good value: At least 30 °C

    BLU 9 has a lower maximum temperature setting than the average portable air conditioner (30 °C vs 32 °C).30 °C vs 32 °C
  • 30 m³/h lower high-speed airflow
    BLU 9 delivers lower high-speed airflow than the average portable air conditioner (320 m³/h vs 350 m³/h).
    What it is: High-speed airflow is the maximum volume of air the fan can move per hour.
    When it matters: Higher maximum airflow circulates cooled air through the room more quickly.

    Importance: HIGH

    Good value: At least 350 m³/h

    BLU 9 delivers lower high-speed airflow than the average portable air conditioner (320 m³/h vs 350 m³/h).320 m³/h vs 350 m³/h
  • 9.5 cm taller cabinet
    BLU 9 is taller than the average portable air conditioner (80.5 cm vs 71 cm).
    What it is: Height is the vertical dimension of the portable air conditioner.
    When it matters: A shorter cabinet fits more easily below windows, shelves, and other height restrictions.

    Importance: LOW

    Good value: Up to 70 cm

    BLU 9 is taller than the average portable air conditioner (80.5 cm vs 71 cm).80.5 cm vs 71 cm
  • 50 W higher rated power draw
    BLU 9 draws more power than the average portable air conditioner (1050 W vs 1000 W).
    Cooling-mode power draw.
    What it is: Rated input power is the electrical power the unit draws at its specified operating point, measured in watts.
    When it matters: Lower rated input power reduces electrical demand, though cooling efficiency also depends on delivered capacity.

    Importance: HIGH

    Good value: Up to 1,200 W

    BLU 9 draws more power than the average portable air conditioner (1050 W vs 1000 W).1050 W vs 1000 W
  • 42.5 cm wider cabinet
    BLU 9 is wider than the average portable air conditioner (80.5 cm vs 38 cm).
    What it is: Width is the side-to-side cabinet dimension of the portable air conditioner.
    When it matters: A narrower unit occupies less wall and floor space beside a window.

    Importance: LOW

    Good value: Up to 35 cm

    BLU 9 is wider than the average portable air conditioner (80.5 cm vs 38 cm).80.5 cm vs 38 cm
  • 3.6 l/24 h lower dehumidification capacity
    BLU 9 offers lower moisture removal than the average portable air conditioner (28.8 l/24 h vs 32.4 l/24 h).
    What it is: Dehumidification capacity is the maximum volume of moisture the unit can remove from the air in 24 hours.
    When it matters: Higher capacity is more effective in large, persistently humid, or moisture-prone rooms.

    Importance: HIGH

    Good value: At least 24 l/24 h

    BLU 9 offers lower moisture removal than the average portable air conditioner (28.8 l/24 h vs 32.4 l/24 h).28.8 l/24 h vs 32.4 l/24 h
  • 3.9% higher weight
    BLU 9 is heavier than the average portable air conditioner (26.5 kg vs 25.5 kg).
    What it is: Weight is the mass of the portable air conditioner before installation accessories are attached.
    When it matters: A lighter unit is easier to carry, reposition, and move between floors.

    Importance: MEDIUM

    Good value: Up to 25 kg

    BLU 9 is heavier than the average portable air conditioner (26.5 kg vs 25.5 kg).26.5 kg vs 25.5 kg
Total
Overall
Performance
Features
Design

Graphic comparison of BLU 09 and other products in the Portable Air Conditioners category

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Third-party reviews

United Kingdom
amazon
4.6
561 Reviews

(Reviews last updated: August 2026)

What customers like about BLU 09?

  • Highly effective at quickly cooling bedrooms and smaller spaces during heatwaves
  • Compact and relatively space-saving design
  • Easy to set up with clear instructions
  • Powerful fan that produces lots of cold air
  • Self-evaporating design means you often don't have to empty water from it

What customers dislike about BLU 09?

  • Unit can be quite noisy, making it difficult for some users to sleep with it on
  • The heavy plastic exhaust hose can sometimes be tricky to secure and may fall out of windows if not properly adjusted
  • Less effective in larger living rooms compared to smaller bedrooms
  • Can be slightly difficult to move around due to only having an indented top handle rather than side handles

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