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Costway 12000 BTU Split Review | 46 Data compared

Avg. price:~£600Cooling capacity:3.4 kWSeasonal cooling efficiency (SEER):?Maximum indoor-unit sound power level:?

Costway 12000 BTU Split Review: Compare 46 technical specifications and user reviews to see how this product ranks in the Air Conditioners category and whether it is worth buying.

Costway 12000 BTU Split
8.3/10

Overall score

Score
8.3/ 10
✕
What it is
An overall evaluation of products in the 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 Air Conditioners category.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 93% of models
Score components

80%

8.3

Technical score

20%

?

User score

★Better than 93% of air conditioners
7.3

Value for money

Value for money
7.3/ 10
✕
What it is
An indicator that combines the overall score of products in the Air Conditioners category with their prices.
When it matters
When you are comparing products in the Air Conditioners category and want a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 61% of models
Score components

70%

8.3

Overall score

30%

5.0

Price

â–²Better than 61%
8.3

Technical score

Technical score
8.3/ 10
✕
What it is
An assessment of technical performance for products in the Air Conditioners category across these key areas: Performance, Features, Design.
When it matters
When you want to compare products in the Air Conditioners category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 93% of models
Score components

40%

7.2

Performance

40%

9.1

Features

20%

9.2

Design

★Better than 93%
?

User score

User score
8.0/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Air Conditioners category.
When it matters
When you want to know how products in the 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 83% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

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Best prices
    N/A~ £600
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 air conditioner Costway 12000 BTU Split

Technical score
Technical score
8.3/ 10
✕
What it is
An assessment of technical performance for products in the Air Conditioners category across these key areas: Performance, Features, Design.
When it matters
When you want to compare products in the Air Conditioners category by technical performance, specifications, and available features.
Score distribution
â–¼
<55-66-77-88-99-10
★ Better than 93% of models
Score components:

40%

7.2

Performance

40%

9.1

Features

20%

9.2

Design

8.3
User score
User score
8.0/ 10
✕
What it is
A rating that combines user reviews with the total review volume for products in the Air Conditioners category.
When it matters
When you want to know how products in the 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 83% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

?
Popularity
Popularity
1.0/ 10
✕
What it is
An indicator based on the number of reviews received by products in the Air Conditioners category.
When it matters
When you prefer products in the 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 99% of models
Popularity:
Costway 12000 BTU Split has a popularity score of 1 point, which is higher than 0% of products in this category.
1.0
Value for money
Value for money
7.3/ 10
✕
What it is
An indicator that combines the overall score of products in the Air Conditioners category with their prices.
When it matters
When you are comparing products in the Air Conditioners category and want a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 61% of models
Score components:

70%

8.3

Overall score

30%

5.0

Price

7.3
Split configuration
mono split
Cooling capacity
3.4 kW
Market range: <2.5 kW – >5.5 kW
This air conditioner delivers a cooling capacity of 3.4 kW, which is lower than that of 54.7% of air conditioners and the same as that of 10% of air conditioners.
Indoor-unit capacity configuration
12,000 BTU/h
Seasonal cooling efficiency (SEER)
?
Seasonal heating efficiency (SCOP)
5.1
Market range: <4 – >5
This air conditioner has a SCOP rating of 5.1, which is higher than that of 94.9% of air conditioners and the same as that of 3.8% of air conditioners.
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Inverter compressor
yes
Does this air conditioner use an inverter compressor? yes. 12.4% of air conditioners do, while 87.6% do not.
Heating function
yes
Can this air conditioner heat the room? yes. 7.3% of air conditioners can, while 92.7% cannot.
Active air purification
no
Does this air conditioner actively purify the air? no. 27% of air conditioners do not, while 73.1% do.
Dehumidification mode
yes
Does this air conditioner include dehumidification mode? yes. 6.8% of air conditioners do, while 93.2% do not.
Fan-only mode
yes
Does this air conditioner offer fan-only mode? yes. 6.2% of air conditioners do, while 93.8% do not.
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Color
white
Body material
plastic and metal
Display
yes
This air conditioner includes a display (yes); 18% of air conditioners do not, while 82% do.
Display position
front center
Physical control methods
remote control and onboard controls
This air conditioner provides remote control and onboard controls physical controls, ahead of 83.2% of air conditioners and equal to 16.9%.
Show more

Costway 12000 BTU Split vs the average air conditioner

246810TotalPerformanceFeaturesDesign
  • 1.1 points higher seasonal heating efficiency
    This air conditioner achieves a higher seasonal heating efficiency (SCOP) than the average air conditioner (5.1 vs 4).
    5.1 vs 4
  • Broader physical control options
    For physical control setup, this air conditioner lists remote control and onboard controls, while the average air conditioner lists remote control.
    remote control and onboard controls vs remote control
  • 5 dB lower outdoor sound power
    This air conditioner operates with a quieter outdoor unit than the average air conditioner (57 dB vs 62 dB).
    57 dB vs 62 dB
  • 34.68 m² larger room coverage
    This air conditioner covers a larger room area than the average air conditioner (69.7 m² vs 35 m²).
    69.677 m² vs 35 m²
  • 1 more fan speeds
    This air conditioner provides more fan speed options than the average air conditioner (4 vs 3).
    4 vs 3
  • 2 cm narrower indoor unit
    This air conditioner has a narrower indoor unit than the average air conditioner (78.5 cm vs 80.5 cm).
    78.5 cm vs 80.5 cm
  • 0.5 cm shallower indoor unit
    This air conditioner has a shallower indoor unit than the average air conditioner (20 cm vs 20.5 cm).
    20 cm vs 20.5 cm
  • 0.5 cm lower indoor unit
    This air conditioner has a lower indoor-unit height than the average air conditioner (28.5 cm vs 29 cm).
    28.5 cm vs 29 cm
  • 3.1% better value for money
    Costway 12000 BTU Split offers better value for money than the average air conditioner (7.34 vs 7.1).
    7.34 vs 7.12
  • 1.1 points higher seasonal heating efficiency
    This air conditioner achieves a higher seasonal heating efficiency (SCOP) than the average air conditioner (5.1 vs 4).
    5.1 vs 4
  • 5 dB lower outdoor sound power
    This air conditioner operates with a quieter outdoor unit than the average air conditioner (57 dB vs 62 dB).
    57 dB vs 62 dB
  • 34.68 m² larger room coverage
    This air conditioner covers a larger room area than the average air conditioner (69.7 m² vs 35 m²).
    69.677 m² vs 35 m²
  • 1 more fan speeds
    This air conditioner provides more fan speed options than the average air conditioner (4 vs 3).
    4 vs 3
  • Broader physical control options
    For physical control setup, this air conditioner lists remote control and onboard controls, while the average air conditioner lists remote control.
    remote control and onboard controls vs remote control
  • 2 cm narrower indoor unit
    This air conditioner has a narrower indoor unit than the average air conditioner (78.5 cm vs 80.5 cm).
    78.5 cm vs 80.5 cm
  • 0.5 cm shallower indoor unit
    This air conditioner has a shallower indoor unit than the average air conditioner (20 cm vs 20.5 cm).
    20 cm vs 20.5 cm
  • 0.5 cm lower indoor unit
    This air conditioner has a lower indoor-unit height than the average air conditioner (28.5 cm vs 29 cm).
    28.5 cm vs 29 cm
  • Does not support comfort airflow mode
    This air conditioner does not support comfort airflow mode, while the average air conditioner supports comfort airflow mode.
    Provides an airflow pattern intended to reduce direct drafts.
  • 183 m³/h lower indoor-unit airflow
    This air conditioner delivers a lower indoor airflow rate than the average air conditioner (412 m³/h vs 595 m³/h).
    412 m³/h vs 595 m³/h
  • 0.1 kW lower cooling capacity
    This air conditioner delivers a lower cooling capacity than the average air conditioner (3.4 kW vs 3.5 kW).
    3.4 kW vs 3.5 kW
  • 20% more expensive
    Costway 12000 BTU Split is more expensive than the average air conditioner (£600 vs £500).
    £600 vs £500
  • 20% more expensive
    Costway 12000 BTU Split is more expensive than the average air conditioner (£600 vs £500).
    £600 vs £500
  • 183 m³/h lower indoor-unit airflow
    This air conditioner delivers a lower indoor airflow rate than the average air conditioner (412 m³/h vs 595 m³/h).
    412 m³/h vs 595 m³/h
  • 0.1 kW lower cooling capacity
    This air conditioner delivers a lower cooling capacity than the average air conditioner (3.4 kW vs 3.5 kW).
    3.4 kW vs 3.5 kW
  • Does not support comfort airflow mode
    This air conditioner does not support comfort airflow mode, while the average air conditioner supports comfort airflow mode.
    Provides an airflow pattern intended to reduce direct drafts.

Video reviews

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

Third-party reviews

What we like about Costway 12000 BTU Split

  • Effective and fast cooling for small to medium-sized rooms, bedrooms, and offices
  • Versatile 4-in-1 functionality including cooling, fan, heating, and dehumidifying
  • Portable design with wheels, allowing for easy movement between rooms
  • Simple, intuitive control panel and remote control, with some models offering Wi-Fi and Alexa connectivity
  • Self-evaporating system reduces the need for manual water drainage in some models

What we don't like about Costway 12000 BTU Split

  • Noise level can be high, which is typical for portable air conditioners
  • Installation of the window venting kit can be tricky and requires patience
  • The unit is quite heavy, making it difficult to lift or move up stairs
  • Less effective in very large, open, or poorly insulated spaces
  • Window kit may need extra sealing for optimal performance

Verdict

The COSTWAY Inverter Mini Split Air Conditioner and Heater is a versatile 4-in-1 or 5-in-1 climate control system available in configurations ranging from 9,000 to 24,000 BTUs, featuring a high-efficiency inverter compressor, a 22 SEER2 energy rating, and eco-friendly R32 refrigerant. Main characteristics include multiple operational modes (cool, heat, dry, fan, and sleep), an indoor noise output as low as 19 to 22 dB, Wi-Fi smartphone app connectivity, smart home integration with Alexa, and a 57°C high-temperature self-cleaning system. Key advantages are its rapid 30-second cooling and 60-second heating response, impressive energy efficiency that visibly lowers electricity bills, and uniform 4D auto-swing airflow distribution. However, notable drawbacks include the absolute necessity of a complex, professional installation by a licensed HVAC technician using a vacuum pump, non-standard sizing on some line connections, and the limited availability of long-term replacement control boards compared to premium brands.

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