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Klarstein Kraftwerk Smart Review | 44 Data compared

Avg. price:~£420Cooling capacity:10000 BTU/hMaximum room size:49 m²Maximum noise level:65 dBHeating function:noCooling Energy Efficiency Class:A

Klarstein Kraftwerk Smart 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 Kraftwerk Smart
7.0/10

Overall score

Score
7.0/ 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–² Better than 52% of models
Score components

80%

7.0

Technical score

20%

6.9

User score

â–²Better than 52% of portable air conditioners
6.9

Value for money

Value for money
6.9/ 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 75% of models
Score components

70%

7.0

Overall score

30%

6.8

Price

â–¼Worse than 75%
7.0

Technical score

Technical score
7.0/ 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–² Better than 58% of models
Score components

55%

7.0

Performance

30%

6.5

Features

15%

8.1

Design

â–²Better than 58%
6.9

User score

User score
6.9/ 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 88% of models
Score components

70%

7.3

User ratings

30%

6.0

Number of reviews

Based on ratings from across the web.
â–¼Worse than 88%
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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 Kraftwerk Smart

Technical score
Technical score
7.0/ 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–² Better than 58% of models
Score components:

55%

7.0

Performance

30%

6.5

Features

15%

8.1

Design

7.0
User score
User score
6.9/ 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 88% of models
Score components

70%

7.3

User ratings

30%

6.0

Number of reviews

Based on ratings from across the web.
6.9
Popularity
Popularity
6.0/ 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 51% of models
Popularity:
Klarstein Kraftwerk Smart has a popularity score of 6 points, which is higher than 49.5% of products in this category.
6.0
Value for money
Value for money
6.9/ 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 75% of models
Score components:

70%

7.0

Overall score

30%

6.8

Price

6.9
Cooling capacity
10,000 BTU/h
Market range: <7k BTU/h – >12k BTU/h
This portable air conditioner delivers 10,000 BTU/h cooling capacity, which is higher than that of 59.6% of portable air conditioners and equal to that of 6.4% 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
none
This portable air conditioner provides none airflow direction control, which ranks lower than 73.1% of portable air conditioners and equal to 26.9% of portable air conditioners.
Night mode
no
This portable air conditioner does not include 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
blue
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 Kraftwerk Smart vs the average portable air conditioner

246810TotalPerformanceFeaturesDesign
  • 19 m² larger room coverage
    This portable air conditioner covers a larger room area than the average portable air conditioner (49 m² vs 30 m²).
    49 m² vs 30 m²
  • Supports Wi-Fi
    This portable air conditioner supports Wi-Fi, the average portable air conditioner does not.
  • 90 m³/h higher high-speed airflow
    This portable air conditioner delivers higher high-speed airflow than the average portable air conditioner (440 m³/h vs 350 m³/h).
    440 m³/h vs 350 m³/h
  • 1,000 BTU/h higher cooling capacity
    This portable air conditioner delivers higher cooling capacity than the average portable air conditioner (10000 BTU/h vs 9000 BTU/h).
    10,000 BTU/h vs 9,000 BTU/h
  • 3 dB quieter minimum operation
    This portable air conditioner is quieter at minimum output than the average portable air conditioner (48 dB vs 51 dB).
    Lowest stated operating noise.
    48 dB vs 51 dB
  • 19 m² larger room coverage
    This portable air conditioner covers a larger room area than the average portable air conditioner (49 m² vs 30 m²).
    49 m² vs 30 m²
  • 90 m³/h higher high-speed airflow
    This portable air conditioner delivers higher high-speed airflow than the average portable air conditioner (440 m³/h vs 350 m³/h).
    440 m³/h vs 350 m³/h
  • 1,000 BTU/h higher cooling capacity
    This portable air conditioner delivers higher cooling capacity than the average portable air conditioner (10000 BTU/h vs 9000 BTU/h).
    10,000 BTU/h vs 9,000 BTU/h
  • 3 dB quieter minimum operation
    This portable air conditioner is quieter at minimum output than the average portable air conditioner (48 dB vs 51 dB).
    Lowest stated operating noise.
    48 dB vs 51 dB
  • Supports Wi-Fi
    This portable air conditioner supports Wi-Fi, the average portable air conditioner does not.
  • More limited airflow control
    This portable air conditioner provides none airflow direction control, while the average portable air conditioner offers automatic.
    none vs automatic
  • 2 °C higher minimum temperature
    This portable air conditioner has a higher minimum temperature setting than the average portable air conditioner (18 °C vs 16 °C).
    18 °C vs 16 °C
  • No night mode
    This portable air conditioner does not include a night mode, while the average portable air conditioner does.
  • No automatic fan-speed control
    This portable air conditioner does not adjust fan speed automatically, while the average portable air conditioner does.
  • 9.4 l/24 h lower dehumidification capacity
    This portable air conditioner offers lower moisture removal than the average portable air conditioner (23 l/24 h vs 32.4 l/24 h).
    23 l/24 h vs 32.4 l/24 h
  • 0.3 m shorter power cord
    This portable air conditioner has a shorter power cord than the average portable air conditioner (1.5 m vs 1.8 m).
    1.5 m vs 1.8 m
  • 11.2 cm taller cabinet
    This portable air conditioner is taller than the average portable air conditioner (82.2 cm vs 71 cm).
    82.2 cm vs 71 cm
  • 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
  • 16% lower user score
    User score
    6.9/ 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 Kraftwerk Smart
    the average portable air conditioner
    Klarstein Kraftwerk Smart has a lower user score than the average portable air conditioner (6.90 vs 8.000).
    6.9 vs 8
  • 20% more expensive
    Klarstein Kraftwerk Smart is more expensive than the average portable air conditioner (£420 vs £350).
    £420 vs £350
  • 2.7% worse value for money
    Klarstein Kraftwerk Smart offers worse value for money than the average portable air conditioner (6.94 vs 7.1).
    6.94 vs 7.13
  • 2 °C higher minimum temperature
    This portable air conditioner has a higher minimum temperature setting than the average portable air conditioner (18 °C vs 16 °C).
    18 °C vs 16 °C
  • No automatic fan-speed control
    This portable air conditioner does not adjust fan speed automatically, while the average portable air conditioner does.
  • 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
  • More limited airflow control
    This portable air conditioner provides none airflow direction control, while the average portable air conditioner offers automatic.
    none vs automatic
  • No night mode
    This portable air conditioner does not include a night mode, while the average portable air conditioner does.
  • 9.4 l/24 h lower dehumidification capacity
    This portable air conditioner offers lower moisture removal than the average portable air conditioner (23 l/24 h vs 32.4 l/24 h).
    23 l/24 h vs 32.4 l/24 h
  • 0.3 m shorter power cord
    This portable air conditioner has a shorter power cord than the average portable air conditioner (1.5 m vs 1.8 m).
    1.5 m vs 1.8 m
  • 11.2 cm taller cabinet
    This portable air conditioner is taller than the average portable air conditioner (82.2 cm vs 71 cm).
    82.2 cm vs 71 cm
  • 8.1% larger external volume
    This portable air conditioner has a larger external volume than the average portable air conditioner (110887.8 cm³ vs 102623.4 cm³).
    110,887.8 cm³ vs 102,623.407656 cm³
  • 2% higher weight
    This portable air conditioner is heavier than the average portable air conditioner (26 kg vs 25.5 kg).
    26 kg vs 25.5 kg

Video reviews

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

Expert reviews

In-depth analysis and verdict from leading tech publications

K
klimaanlagen-guru.de
Keine Angabe
Summary of the review
Klarstein Kraftwerk Smart Air Conditioner Review
(Translated)Show original
T
testsiegertv.com
27/06/2024
Summary of the review
Klarstein Kraftwerk Smart 10: Mobile Air Conditioner Heat Test
(Translated)Show original
M
maison-et-bricolage.fr
12/07/2025
Summary of the review
Klarstein Kraftwerk Smart Review: An Affordable Portable Air Conditioner for a Cool Summer
(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 Kraftwerk Smart

  • Powerful cooling performance that quickly cools down small to medium-sized rooms
  • Versatile 3-in-1 functions serving as an air conditioner, fan, and dehumidifier
  • Convenient smart controls via the mobile app, Amazon Alexa, Google Home, and physical remote control
  • Modern and aesthetically pleasing design compared to traditional bulky units
  • Comes with a comprehensive starter kit including an exhaust hose and window sealing set
  • Easy to transport around the house thanks to smooth-rolling floor castors and integrated handles

What we don't like about Klarstein Kraftwerk Smart

  • Operation noise can be very loud and disruptive, especially when the compressor kicks in during cooling mode
  • High electricity and power consumption leading to increased running costs
  • The official smartphone app can occasionally be difficult to connect or set up successfully
  • The included exhaust hose setup can look untidy in living areas, and some users reported missing installation components upon delivery
  • Batteries for the remote control are not included in the box

Verdict

The Klarstein Kraftwerk Smart is a versatile 3-in-1 portable air conditioner, fan, and dehumidifier available in 10,000 BTU (2.9 kW) and 12,000 BTU (3.5 kW) configurations, utilizing eco-friendly R290 refrigerant and an energy-efficiency class A compressor. Designed to manage temperatures between 18 and 32 °C in medium to large spaces from 29 to 59 m², it delivers a maximum airflow of up to 440 m³/h and pulls up to 23 liters of moisture per day. Its primary advantages include convenient dual-operation via the specialized smartphone app over Wi-Fi and manual controls, rapid cooling performance, a 24-hour timer, and low-speed operation down to 48 dB. However, major drawbacks involve its high overall power consumption and a maximum noise output reaching up to 65 dB, which can still feel quite loud for sensitive living environments.

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