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Klarstein Iceblock Prosmart 9 Review | 44 Data compared

Avg. price:~£350Cooling capacity:9000 BTU/hMaximum room size:44 m²Maximum noise level:65 dBHeating function:noCooling Energy Efficiency Class:A

Klarstein Iceblock Prosmart 9 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.

Klarstein Iceblock Prosmart 9
6.8/10

Overall score

Score
6.8/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 61% of models
Score components

80%

6.8

Technical score

20%

6.7

User score

â–¼Worse than 61% of portable air conditioners
7.0

Value for money

Value for money
7.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 66% of models
Score components

70%

6.8

Overall score

30%

7.5

Price

â–¼Worse than 66%
6.8

Technical score

Technical score
6.8/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 52% of models
Score components

55%

6.2

Performance

30%

6.9

Features

15%

9.2

Design

â–¼Worse than 52%
6.7

User score

User score
6.7/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 90% of models
Score components

70%

7.2

User ratings

30%

5.6

Number of reviews

Based on ratings from across the web.
â–¼Worse than 90%
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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 portable air conditioner Klarstein Iceblock Prosmart 9

Technical score
Technical score
6.8/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 52% of models
Score components:

55%

6.2

Performance

30%

6.9

Features

15%

9.2

Design

6.8
User score
User score
6.7/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 90% of models
Score components

70%

7.2

User ratings

30%

5.6

Number of reviews

Based on ratings from across the web.
6.7
Popularity
Popularity
5.6/ 10
✕
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.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 54% of models
Popularity:
Klarstein Iceblock Prosmart 9 has a popularity score of 5.6 points, which is lower than 52.6% of products in this category.
5.6
Value for money
Value for money
7.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 66% of models
Score components:

70%

6.8

Overall score

30%

7.5

Price

7.0
Cooling capacity
9,000 BTU/h
Market range: <7k BTU/h – >12k BTU/h
This portable air conditioner delivers 9,000 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
?
Cooling Energy Efficiency Class
A
This portable air conditioner 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.
Heating energy efficiency class
?
Number of speeds
3
Market range: <0 – >5
This portable air conditioner offers 3 fan speeds, which is more than 36.8% of portable air conditioners and equal to 61.1% of portable air conditioners.
Show more
Fan-only mode
yes
This portable air conditioner includes a fan-only mode. 99.5% of portable air conditioners support this mode.
Airflow direction control
automatic
This portable air conditioner 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
yes
This portable air conditioner includes a dedicated night mode. 74.3% of portable air conditioners offer night mode.
Timer
yes
This portable air conditioner includes a built-in timer. 99.5% of portable air conditioners feature a timer.
Maximum timer duration
24 hours
Market range: <0 hours – >25 hours
This portable air conditioner 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
white
Display
yes
This portable air conditioner includes an integrated display. 99.5% of portable air conditioners feature a display.
Control type
touch
Remote control
yes
This portable air conditioner comes with a remote control. 99% of portable air conditioners include a remote.
Handles
yes
This portable air conditioner includes built-in handles for easier carrying. 99.5% of portable air conditioners feature handles.
Show more

Klarstein Iceblock Prosmart 9 vs the average portable air conditioner

246810TotalPerformanceFeaturesDesign
  • 14 m² larger room coverage
    This portable air conditioner covers a larger room area than the average portable air conditioner (44 m² vs 30 m²).
    44 m² vs 30 m²
  • 2 cm shallower cabinet
    This portable air conditioner is shallower than the average portable air conditioner (33.5 cm vs 35.5 cm).
    33.5 cm vs 35.5 cm
  • 5.9% lower weight
    This portable air conditioner is lighter than the average portable air conditioner (24 kg vs 25.5 kg).
    24 kg vs 25.5 kg
  • 1 dB quieter minimum operation
    This portable air conditioner is quieter at minimum output than the average portable air conditioner (50 dB vs 51 dB).
    Lowest stated operating noise.
    50 dB vs 51 dB
  • 14 m² larger room coverage
    This portable air conditioner covers a larger room area than the average portable air conditioner (44 m² vs 30 m²).
    44 m² vs 30 m²
  • 1 dB quieter minimum operation
    This portable air conditioner is quieter at minimum output than the average portable air conditioner (50 dB vs 51 dB).
    Lowest stated operating noise.
    50 dB vs 51 dB
  • 2 cm shallower cabinet
    This portable air conditioner is shallower than the average portable air conditioner (33.5 cm vs 35.5 cm).
    33.5 cm vs 35.5 cm
  • 5.9% lower weight
    This portable air conditioner is lighter than the average portable air conditioner (24 kg vs 25.5 kg).
    24 kg vs 25.5 kg
  • No automatic fan-speed control
    This portable air conditioner does not adjust fan speed automatically, while the average portable air conditioner does.
  • 50 m³/h lower high-speed airflow
    This portable air conditioner delivers lower high-speed airflow than the average portable air conditioner (300 m³/h vs 350 m³/h).
    300 m³/h vs 350 m³/h
  • 8.4 l/24 h lower dehumidification capacity
    This portable air conditioner offers lower moisture removal than the average portable air conditioner (24 l/24 h vs 32.4 l/24 h).
    24 l/24 h vs 32.4 l/24 h
  • 1 dB louder at maximum output
    This portable air conditioner is louder at maximum output than the average portable air conditioner (65 dB vs 64 dB).
    65 dB vs 64 dB
  • 1 °C lower maximum temperature
    This portable air conditioner has a lower maximum temperature setting than the average portable air conditioner (31 °C vs 32 °C).
    31 °C vs 32 °C
  • 6 cm wider cabinet
    This portable air conditioner is wider than the average portable air conditioner (44 cm vs 38 cm).
    44 cm vs 38 cm
  • 19.3% lower user score
    User score
    6.7/ 10
    ✕
    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 distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Klarstein Iceblock Prosmart 9
    the average portable air conditioner
    Klarstein Iceblock Prosmart 9 has a lower user score than the average portable air conditioner (6.71 vs 8.000).
    6.71 vs 8
  • 1.7% worse value for money
    Klarstein Iceblock Prosmart 9 offers worse value for money than the average portable air conditioner (7.01 vs 7.1).
    7.01 vs 7.13
  • 19.3% lower user score
    User score
    6.7/ 10
    ✕
    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 distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    Klarstein Iceblock Prosmart 9
    the average portable air conditioner
    Klarstein Iceblock Prosmart 9 has a lower user score than the average portable air conditioner (6.71 vs 8.000).
    6.71 vs 8
  • 1.7% worse value for money
    Klarstein Iceblock Prosmart 9 offers worse value for money than the average portable air conditioner (7.01 vs 7.1).
    7.01 vs 7.13
  • 8.1% less popular
    Klarstein Iceblock Prosmart 9 is less popular than the average portable air conditioner (5.56 vs 6).
    5.56 vs 6.01
  • No automatic fan-speed control
    This portable air conditioner does not adjust fan speed automatically, while the average portable air conditioner does.
  • 50 m³/h lower high-speed airflow
    This portable air conditioner delivers lower high-speed airflow than the average portable air conditioner (300 m³/h vs 350 m³/h).
    300 m³/h vs 350 m³/h
  • 1 dB louder at maximum output
    This portable air conditioner is louder at maximum output than the average portable air conditioner (65 dB vs 64 dB).
    65 dB vs 64 dB
  • 1 °C lower maximum temperature
    This portable air conditioner has a lower maximum temperature setting than the average portable air conditioner (31 °C vs 32 °C).
    31 °C vs 32 °C
  • 8.4 l/24 h lower dehumidification capacity
    This portable air conditioner offers lower moisture removal than the average portable air conditioner (24 l/24 h vs 32.4 l/24 h).
    24 l/24 h vs 32.4 l/24 h
  • 6 cm wider cabinet
    This portable air conditioner is wider than the average portable air conditioner (44 cm vs 38 cm).
    44 cm vs 38 cm
  • 2.7% larger external volume
    This portable air conditioner has a larger external volume than the average portable air conditioner (105391 cm³ vs 102623.4 cm³).
    105,391 cm³ vs 102,623.407656 cm³
  • 0.5 cm taller cabinet
    This portable air conditioner is taller than the average portable air conditioner (71.5 cm vs 71 cm).
    71.5 cm vs 71 cm

Expert reviews

In-depth analysis and verdict from leading tech publications

H
homeandsmart.de
19/05/2022
Summary of the review
Portable Klarstein Air Conditioners: Reviews, Models, and Prices
(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 Klarstein Iceblock Prosmart 9

  • Efficient 3-in-1 multi-functionality offering cooling, fan, and dehumidification modes.
  • Smart-home integration via the Klarstein app allowing seamless control from anywhere over Wi-Fi.
  • Good cooling performance of 9,000 BTU suitable for medium-sized rooms up to 32 square meters.
  • Eco-friendly operation utilizing a powerful compressor with R290 refrigerant and Class A energy efficiency.
  • Convenient control options including physical buttons, remote control, and voice command compatibility with Alexa or Google Home.
  • Easy mobility provided by smooth, integrated floor castors.

What we don't like about Klarstein Iceblock Prosmart 9

  • Relatively high operational noise levels, which can be disruptive during sleep or focused work.
  • Typical portable AC constraints, requiring a large exhaust hose and window sealing kit to deposit hot air outside.
  • The window sealing kit provided can sometimes be finicky or require additional sizing depending on the window type.
  • Significant energy consumption when utilized continuously during long peak summer periods.

Verdict

The Klarstein Iceblock Prosmart 9 is a versatile 3-in-1 portable air conditioner designed for cooling, fan ventilation, and dehumidifying small to medium spaces up to 44 m². This energy-efficient Class A appliance delivers a powerful 9,000 BTU (2.6 kW) cooling capacity with an airflow of up to 330 m³/h, utilizing eco-friendly R290 refrigerant and operating across a temperature range of 16 to 31 °C. Key advantages include its smart Wi-Fi app integration, Amazon Alexa and Google Home compatibility, a 24-hour programmable timer, an included window sealing kit, and a specialized night mode for reduced noise during sleep. However, its primary drawbacks are the inherent bulk and typical operational noise associated with portable single-hose compressor units, alongside the dependency on maintaining proximity to a window for the exhaust pipe.

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