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Products in this category are scored under Frontum Air Conditioners Methodology v1.0: technical specifications plus authentic consumer ratings, with 0% commercial bias.
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Midea MASAG12-21HS1G Review | 46 Data compared

Avg. price:~£490Cooling capacity:3.5 kWSeasonal cooling efficiency (SEER):6.1Maximum indoor-unit sound power level:54 dB

Midea MASAG12-21HS1G 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.

7.6/10

Overall score

Score
7.6/ 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
â–² Better than 56% of models
Score components

80%

7.6

Technical score

20%

?

User score

â–²Better than 56% of air conditioners
7.1

Value for money

Value for money
7.1/ 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–¼ Worse than 52% of models
Score components

70%

7.6

Overall score

30%

6.1

Price

â–¼Worse than 52%
7.6

Technical score

Technical score
7.6/ 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
â–² Better than 60% of models
Score components

40%

6.1

Performance

40%

8.3

Features

20%

9.1

Design

â–²Better than 60%
?

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

  • No image
No image
Best prices
    N/A~ £490
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 Midea MASAG12-21HS1G

Technical score
Technical score
7.6/ 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
â–² Better than 60% of models
Score components:

40%

6.1

Performance

40%

8.3

Features

20%

9.1

Design

7.6
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:
Midea MASAG12-21HS1G 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
7.1/ 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–¼ Worse than 52% of models
Score components:

70%

7.6

Overall score

30%

6.1

Price

7.1
Split configuration
mono split
Cooling capacity
3.5 kW
Market range: <2.5 kW – >5.5 kW
This air conditioner delivers a cooling capacity of 3.5 kW, which is higher than that of 45.9% of air conditioners and the same as that of 20% of air conditioners.
Indoor-unit capacity configuration
12,000 BTU/h
Seasonal cooling efficiency (SEER)
6.1
Market range: <6 – >7.5
This air conditioner has a SEER rating of 6.1, which is lower than that of 62.2% of air conditioners and the same as that of 34% of air conditioners.
Seasonal heating efficiency (SCOP)
4.6
Market range: <4 – >5
This air conditioner has a SCOP rating of 4.6, which is higher than that of 81.7% of air conditioners and the same as that of 10.1% 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
no
Does this air conditioner include dehumidification mode? no. 93.8% of air conditioners do not, while 6.2% do.
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
Display
yes
This air conditioner includes a display (yes); 18% of air conditioners do not, while 82% do.
Display position
front right
Physical control methods
remote control
This air conditioner provides remote control physical controls, ahead of 1.1% of air conditioners and equal to 81.5%.
Show more

Midea MASAG12-21HS1G vs the average air conditioner

246810TotalPerformanceFeaturesDesign
  • 0.6 points higher seasonal heating efficiency
    This air conditioner achieves a higher seasonal heating efficiency (SCOP) than the average air conditioner (4.6 vs 4).
    4.6 vs 4
  • 12 dB lower outdoor sound power
    This air conditioner operates with a quieter outdoor unit than the average air conditioner (50 dB vs 62 dB).
    50 dB vs 62 dB
  • 2 dB lower indoor sound power
    This air conditioner operates with a quieter indoor unit than the average air conditioner (54 dB vs 56 dB).
    54 dB vs 56 dB
  • 16 m² larger room coverage
    This air conditioner covers a larger room area than the average air conditioner (51 m² vs 35 m²).
    51 m² vs 35 m²
  • 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
  • 5 m³/h higher indoor-unit airflow
    This air conditioner delivers a higher indoor airflow rate than the average air conditioner (600 m³/h vs 595 m³/h).
    600 m³/h vs 595 m³/h
  • 2% cheaper
    Midea MASAG12-21HS1G is cheaper than the average air conditioner (£490 vs £500).
    £490 vs £500
  • 2% cheaper
    Midea MASAG12-21HS1G is cheaper than the average air conditioner (£490 vs £500).
    £490 vs £500
  • 0.6 points higher seasonal heating efficiency
    This air conditioner achieves a higher seasonal heating efficiency (SCOP) than the average air conditioner (4.6 vs 4).
    4.6 vs 4
  • 12 dB lower outdoor sound power
    This air conditioner operates with a quieter outdoor unit than the average air conditioner (50 dB vs 62 dB).
    50 dB vs 62 dB
  • 2 dB lower indoor sound power
    This air conditioner operates with a quieter indoor unit than the average air conditioner (54 dB vs 56 dB).
    54 dB vs 56 dB
  • 16 m² larger room coverage
    This air conditioner covers a larger room area than the average air conditioner (51 m² vs 35 m²).
    51 m² vs 35 m²
  • 5 m³/h higher indoor-unit airflow
    This air conditioner delivers a higher indoor airflow rate than the average air conditioner (600 m³/h vs 595 m³/h).
    600 m³/h vs 595 m³/h
  • 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 Wi-Fi connectivity
    This air conditioner does not support Wi-Fi connectivity, while the average air conditioner supports Wi-Fi connectivity.
  • No dehumidification mode
    Does this air conditioner dehumidify independently? no. Does the average air conditioner? yes.
  • 0.2 points lower seasonal cooling efficiency
    This air conditioner has a lower seasonal cooling efficiency (SEER) than the average air conditioner (6.1 vs 6.3).
    6.1 vs 6.3
  • Does not support an anti-mould function
    This air conditioner does not support an anti-mould function, while the average air conditioner supports an anti-mould function.
  • 0.2 points lower seasonal cooling efficiency
    This air conditioner has a lower seasonal cooling efficiency (SEER) than the average air conditioner (6.1 vs 6.3).
    6.1 vs 6.3
  • Does not support Wi-Fi connectivity
    This air conditioner does not support Wi-Fi connectivity, while the average air conditioner supports Wi-Fi connectivity.
  • No dehumidification mode
    Does this air conditioner dehumidify independently? no. Does the average air conditioner? yes.
  • Does not support an anti-mould function
    This air conditioner does not support an anti-mould function, while the average air conditioner supports an anti-mould function.

Third-party reviews

What we like about Midea MASAG12-21HS1G

  • Efficient year-round operation with both powerful cooling and supplemental heating functions
  • Advanced inverter technology that ensures consistent room temperatures while reducing electricity costs
  • High energy efficiency during temperature maintenance
  • Effective at handling multi-season climate needs
  • Generally easy to install and set up compared to non-split alternatives

What we don't like about Midea MASAG12-21HS1G

  • Recurring complaints regarding high noise levels or the absence of a dedicated ultra-quiet mode
  • Potential mechanical or reliability concerns, with reports of some units failing to blow cold air over extended periods
  • Noticeable compressor buzz or vibration under high-efficiency load settings

Verdict

The Midea MASAG12-21HS1G is a 12,000 BTU (1.5 Ton equivalent in regional markets) wall-mounted split system air conditioner designed to efficiently climate-control spaces up to 550 square feet. Running on standard 115-120V power, this AG Series model features dual cooling and heating functionality backed by energy-efficient inverter technology and built-in Wi-Fi connectivity for smart app management. Key advantages include an ultra-quiet sleep mode that drops to low noise levels, rapid temperature adjustment, a compact white chassis, and reliable copper condenser piping that improves corrosion resistance. On the downside, the system requires professional installation to prevent refrigerant leaks, and some users have highlighted inconsistencies with customer support response times when handling warranty claims.

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