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Olimpia Splendid Aryal S1 E Inverter 12 C Review | 46 Data compared

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  • Avg. price in UK: ~£310
  • Avg. price in US: ~$360
  • Cooling capacity: 3.5 kW
  • Seasonal cooling efficiency (SEER): 6.1
  • Maximum indoor-unit sound power level: 53 dB

Olimpia Splendid Aryal S1 E Inverter 12 C 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

Overall score

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 components:

80.0%

7.2

Technical Score

20.0%

9.4

User score

Very good
7.2

Technical Score

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 components:

40.0%

4.1

Performance

40.0%

9.2

Features

20.0%

9.4

Design

Very good
9.4

User score

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 components:

70.0%

9.2

User reviews

30.0%

9.9

Popularity

User score:
United Kingdom
amazon
4.6
(109)
amazon
4.5
(34)

(Reviews last updated: August 2026)

Exceptional
  • 9.5
    Compactness

    Score components:

    30.0%

    8.5

    Indoor unit width

    30.0%

    10

    Indoor unit depth

    20.0%

    9.6

    Indoor unit height

    20.0%

    10

    Indoor unit weight

  • 8.3
    Bedroom comfort

    Score components:

    40.0%

    ?

    Night mode

    25.0%

    ?

    Timer

    20.0%

    ?

    Maximum timer duration

    15.0%

    10

    Automatic mode

  • olimpia-splendid-aryal-s1-e-inverter-12-c
  • olimpia-splendid-aryal-s1-e-inverter-12-c
olimpia-splendid-aryal-s1-e-inverter-12-c
olimpia-splendid-aryal-s1-e-inverter-12-c

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 Olimpia Splendid Aryal S1 E Inverter 12 C (OS-K/SEAPH12EI) is a high-wall mono-split heat pump air conditioner operating on eco-friendly R-32 refrigerant with a capacity of 12,000 BTU, delivering a nominal cooling output of 3.52 kW (A++ energy rating, 6.1 SEER) and a heating output of 3.37 kW (A+ energy rating, 4.0 SCOP). Key characteristics and pros include its multi-filtering Air Quality Technology (anti-dust, activated carbon, and cold catalyst filters), a Self-Clean cycle that automatically dries the evaporator to prevent mould, a corrosive-resistant Golden Fin outdoor coil, Wi-Fi connectivity, and versatile operational profiles like Sleep, Silent, and Follow Me modes. However, potential cons include a higher maximum indoor sound pressure level of 41 dB(A) at high speed, manual-only horizontal airflow adjustment, and the structural requirement of installing a separate included USB key to enable its wireless features.

Technical Specifications of air conditioner Olimpia Splendid Aryal S1 E Inverter 12 C

Technical Score

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 components:

40.0%

4.1

Performance

40.0%

9.2

Features

20.0%

9.4

Design

7.2
Olimpia Splendid Aryal S1 E Inverter 12 C has a technical score of 7.18 points, which is lower than 62.9% 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 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 components:

70.0%

9.2

User reviews

30.0%

9.9

Popularity

User score:
United Kingdom
amazon
4.6
(109)
amazon
4.5
(34)

(Reviews last updated: August 2026)

9.4
Olimpia Splendid Aryal S1 E Inverter 12 C has a user score of 9.38 points, which is higher than 98.3% of products in this category.
Popularity
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.
9.9
Olimpia Splendid Aryal S1 E Inverter 12 C has a popularity of 9.9 points, which is higher than 90.5% of products in this category.
Ratio quality/price

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 components:

60.0%

7.6

Overall score

40.0%

7.9

Price

7.7
Olimpia Splendid Aryal S1 E Inverter 12 C has a quality-to-price ratio of 7.7 points, which is higher than 89.9% of products in this category.
Split configuration
What it is: Split configuration states how many indoor units are paired with the air-conditioning system, such as mono, dual, triple, quad, or penta split.
When it matters: It matters when you are planning climate control for one room or several rooms from a shared outdoor unit.

Importance: LOW

mono split
Cooling capacity
What it is: Cooling capacity is the rate at which the air conditioner can remove heat from a room, expressed in kilowatts.
When it matters: Adequate capacity is essential for cooling the intended room size without excessive run time or poor temperature control.

Importance: HIGH

Good value: At least 3.5 kW

3.5 kW
Olimpia Splendid Aryal S1 E Inverter 12 C 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
What it is: Indoor-unit capacity configuration shows how the system’s BTU/h capacity is distributed across its indoor units.
When it matters: It matters when sizing a multi-split system for rooms with different cooling loads.

Importance: LOW

12,000 BTU/h
Seasonal cooling efficiency (SEER)
What it is: SEER expresses the air conditioner’s average cooling efficiency over a typical season.
When it matters: A higher SEER generally means less electricity is needed to deliver the same seasonal cooling.

Importance: HIGH

Good value: At least 6.1

6.1
Olimpia Splendid Aryal S1 E Inverter 12 C 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)
What it is: SCOP expresses the air conditioner’s average heating efficiency over a typical season.
When it matters: A higher SCOP generally means less electricity is needed to provide the same seasonal heating.

Importance: HIGH

Good value: At least 4.0

4
Olimpia Splendid Aryal S1 E Inverter 12 C has a SCOP rating of 4, which is higher than that of 4.4% of air conditioners and the same as that of 49.4% of air conditioners.
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Inverter compressor
What it is: An inverter compressor can vary its operating speed instead of relying only on full-power on and off cycles.
When it matters: Variable compressor output can improve temperature stability, efficiency, and part-load noise.

Importance: HIGH

Good value: yes

yes
Does Olimpia Splendid Aryal S1 E Inverter 12 C use an inverter compressor? yes. 12.4% of air conditioners do, while 87.6% do not.
Heating function
What it is: A heating function reverses or supplements normal operation to warm the room.
When it matters: Heating extends seasonal usefulness and can replace a separate spot heater in mild weather.

Importance: MEDIUM

Good value: yes

yes
Can Olimpia Splendid Aryal S1 E Inverter 12 C heat the room? yes. 7.3% of air conditioners can, while 92.7% cannot.
Active air purification
What it is: Active air purification uses a dedicated treatment function beyond ordinary passive filtration to improve indoor air quality.
When it matters: It is useful when reducing fine particles, allergens, odors, or other airborne contaminants is a priority.

Importance: LOW

Good value: yes

yes
Does Olimpia Splendid Aryal S1 E Inverter 12 C actively purify the air? yes. 73.7% of air conditioners do, while 26.4% do not.
Includes active air purification such as ionization, plasma, or UV treatment.
Dehumidification mode
What it is: Dehumidification mode removes moisture from room air with reduced emphasis on cooling.
When it matters: This mode improves comfort in humid weather and can help control indoor dampness.

Importance: MEDIUM

Good value: yes

yes
Does Olimpia Splendid Aryal S1 E Inverter 12 C include dehumidification mode? yes. 6.8% of air conditioners do, while 93.2% do not.
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
Does Olimpia Splendid Aryal S1 E Inverter 12 C offer fan-only mode? yes. 6.2% of air conditioners do, while 93.8% do not.
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Color
What it is: Color identifies the main exterior finish of the indoor unit.
When it matters: Color matters when the indoor unit remains visible and should suit the room decor.

Importance: LOW

white
Body material
What it is: Body material identifies the primary exterior housing material of the indoor unit.
When it matters: Housing material affects appearance, rigidity, cleaning, and resistance to everyday wear.

Importance: LOW

plastic
Display
What it is: A display shows temperature, operating mode, timer, or status information on the indoor unit.
When it matters: A built-in display makes current settings easier to check without opening an app or using the remote.

Importance: LOW

Good value: yes

yes
Olimpia Splendid Aryal S1 E Inverter 12 C includes a display (yes); 18% of air conditioners do not, while 82% do.
Display position
What it is: Display position identifies where the integrated display sits on the indoor or main unit.
When it matters: A well-placed display is easier to read from the usual viewing angle without obstructing the room layout.

Importance: LOW

front right
Physical control methods
What it is: Physical control methods identify the supplied remote and user-facing controls on the unit.
When it matters: Physical controls matter when you want to operate the air conditioner without relying on Wi-Fi, an app, or voice control.

Importance: MEDIUM

Good value: remote control and onboard controls

remote control
Olimpia Splendid Aryal S1 E Inverter 12 C provides remote control physical controls, ahead of 1.1% of air conditioners and equal to 81.5%.
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Olimpia Splendid Aryal S1 E Inverter 12 C vs the average air conditioner

  • 3 dB lower indoor sound power
    Olimpia Splendid Aryal S1 E Inverter 12 C operates with a quieter indoor unit than the average air conditioner (53 dB vs 56 dB).
    What it is: Maximum indoor-unit sound power level measures the greatest acoustic power emitted by the indoor unit.
    When it matters: A lower value supports a quieter room, which is especially useful in bedrooms and workspaces.

    Importance: HIGH

    Good value: Up to 55 dB

    Olimpia Splendid Aryal S1 E Inverter 12 C operates with a quieter indoor unit than the average air conditioner (53 dB vs 56 dB).53 dB vs 56 dB
  • 13.8% lighter indoor unit
    Olimpia Splendid Aryal S1 E Inverter 12 C has a lighter indoor unit than the average air conditioner (7.5 kg vs 8.7 kg).
    What it is: Indoor unit weight is the net mass of the wall-mounted indoor component.
    When it matters: A lighter indoor unit is easier to lift and places less load on the mounting surface during installation.

    Importance: HIGH

    Good value: Up to 10 kg

    Olimpia Splendid Aryal S1 E Inverter 12 C has a lighter indoor unit than the average air conditioner (7.5 kg vs 8.7 kg).7.5 kg vs 8.7 kg
  • Includes an activated carbon filter
    Olimpia Splendid Aryal S1 E Inverter 12 C includes an activated carbon filter, while the average air conditioner does not include an activated carbon filter.
    What it is: Indicates whether the air conditioner includes an activated carbon filter for odors and some gases.
    When it matters: When reducing cooking smells, smoke odors, or other unwanted room odors is important.

    Importance: MEDIUM

    Good value: yes

    Olimpia Splendid Aryal S1 E Inverter 12 C includes an activated carbon filter, while the average air conditioner does not include an activated carbon filter.
  • Active air purification
    Does Olimpia Splendid Aryal S1 E Inverter 12 C actively purify the air? yes. What about the average air conditioner? no.
    Includes active air purification such as ionization, plasma, or UV treatment.
    What it is: Active air purification uses a dedicated treatment function beyond ordinary passive filtration to improve indoor air quality.
    When it matters: It is useful when reducing fine particles, allergens, odors, or other airborne contaminants is a priority.

    Importance: LOW

    Good value: yes

    Does Olimpia Splendid Aryal S1 E Inverter 12 C actively purify the air? yes. What about the average air conditioner? no.
  • 1.1 cm shallower indoor unit
    Olimpia Splendid Aryal S1 E Inverter 12 C has a shallower indoor unit than the average air conditioner (19.4 cm vs 20.5 cm).
    What it is: Indoor unit depth is the front-to-back distance of the wall-mounted unit.
    When it matters: A shallower indoor unit protrudes less into the room and looks less bulky on the wall.

    Importance: MEDIUM

    Good value: Up to 22 cm

    Olimpia Splendid Aryal S1 E Inverter 12 C has a shallower indoor unit than the average air conditioner (19.4 cm vs 20.5 cm).19.4 cm vs 20.5 cm
  • 9.93x more popular
    Olimpia Splendid Aryal S1 E Inverter 12 C is more popular than the average air conditioner (9.93 vs 1).
    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.
    Olimpia Splendid Aryal S1 E Inverter 12 C is more popular than the average air conditioner (9.93 vs 1).9.93 vs 1
  • 17.3% higher user score
    Olimpia Splendid Aryal S1 E Inverter 12 C has a higher user score than the average air conditioner (9.38 vs 8).
    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.
    Olimpia Splendid Aryal S1 E Inverter 12 C has a higher user score than the average air conditioner (9.38 vs 8).9.38 vs 8
  • 0.5 cm lower indoor unit
    Olimpia Splendid Aryal S1 E Inverter 12 C has a lower indoor-unit height than the average air conditioner (28.5 cm vs 29 cm).
    What it is: Indoor unit height is the vertical dimension of the wall-mounted indoor unit.
    When it matters: A shorter indoor unit needs less vertical wall space and fits above doors or windows more easily.

    Importance: MEDIUM

    Good value: Up to 30 cm

    Olimpia Splendid Aryal S1 E Inverter 12 C has a lower indoor-unit height than the average air conditioner (28.5 cm vs 29 cm).28.5 cm vs 29 cm
  • 3 dB lower indoor sound power
    Olimpia Splendid Aryal S1 E Inverter 12 C operates with a quieter indoor unit than the average air conditioner (53 dB vs 56 dB).
  • Includes an activated carbon filter
    Olimpia Splendid Aryal S1 E Inverter 12 C includes an activated carbon filter, while the average air conditioner does not include an activated carbon filter.
  • Active air purification
    Does Olimpia Splendid Aryal S1 E Inverter 12 C actively purify the air? yes. What about the average air conditioner? no.
  • 13.8% lighter indoor unit
    Olimpia Splendid Aryal S1 E Inverter 12 C has a lighter indoor unit than the average air conditioner (7.5 kg vs 8.7 kg).
  • 1.1 cm shallower indoor unit
    Olimpia Splendid Aryal S1 E Inverter 12 C has a shallower indoor unit than the average air conditioner (19.4 cm vs 20.5 cm).
  • 0.5 cm lower indoor unit
    Olimpia Splendid Aryal S1 E Inverter 12 C has a lower indoor-unit height than the average air conditioner (28.5 cm vs 29 cm).

Total
Overall
Performance
Features
Design
  • 4 dB higher outdoor sound power
    Olimpia Splendid Aryal S1 E Inverter 12 C operates with a louder outdoor unit than the average air conditioner (66 dB vs 62 dB).
  • 0.2 points lower seasonal cooling efficiency
    Olimpia Splendid Aryal S1 E Inverter 12 C has a lower seasonal cooling efficiency (SEER) than the average air conditioner (6.1 vs 6.3).
  • 48 m³/h lower indoor-unit airflow
    Olimpia Splendid Aryal S1 E Inverter 12 C delivers a lower indoor airflow rate than the average air conditioner (547 m³/h vs 595 m³/h).
  • Does not support voice control
    Olimpia Splendid Aryal S1 E Inverter 12 C does not support voice control, while the average air conditioner supports voice control.
  • 4 dB higher outdoor sound power
    Olimpia Splendid Aryal S1 E Inverter 12 C operates with a louder outdoor unit than the average air conditioner (66 dB vs 62 dB).
    What it is: Maximum outdoor-unit sound power level measures the greatest acoustic power emitted by the outdoor unit.
    When it matters: A lower value reduces the likelihood of disturbing neighbours or nearby outdoor spaces.

    Importance: MEDIUM

    Good value: Up to 65 dB

    Olimpia Splendid Aryal S1 E Inverter 12 C operates with a louder outdoor unit than the average air conditioner (66 dB vs 62 dB).66 dB vs 62 dB
  • 0.2 points lower seasonal cooling efficiency
    Olimpia Splendid Aryal S1 E Inverter 12 C has a lower seasonal cooling efficiency (SEER) than the average air conditioner (6.1 vs 6.3).
    What it is: SEER expresses the air conditioner’s average cooling efficiency over a typical season.
    When it matters: A higher SEER generally means less electricity is needed to deliver the same seasonal cooling.

    Importance: HIGH

    Good value: At least 6.1

    Olimpia Splendid Aryal S1 E Inverter 12 C 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 voice control
    Olimpia Splendid Aryal S1 E Inverter 12 C does not support voice control, while the average air conditioner supports voice control.
    What it is: Indicates whether the air conditioner can be operated through supported voice assistants.
    When it matters: When hands-free temperature changes and smart-home voice routines are useful.

    Importance: LOW

    Good value: yes

    Olimpia Splendid Aryal S1 E Inverter 12 C does not support voice control, while the average air conditioner supports voice control.
  • 48 m³/h lower indoor-unit airflow
    Olimpia Splendid Aryal S1 E Inverter 12 C delivers a lower indoor airflow rate than the average air conditioner (547 m³/h vs 595 m³/h).
    What it is: Maximum indoor-unit airflow is the greatest volume of air the indoor unit can circulate in one hour.
    When it matters: Higher airflow can distribute cooled or heated air more quickly, especially in larger rooms.

    Importance: HIGH

    Good value: At least 600 m³/h

    Olimpia Splendid Aryal S1 E Inverter 12 C delivers a lower indoor airflow rate than the average air conditioner (547 m³/h vs 595 m³/h).547 m³/h vs 595 m³/h
Total
Performance
Features

Graphic comparison of Olimpia Splendid Aryal S1 E Inverter 12 C and other products in the Air Conditioners category

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Third-party reviews

United Kingdom
amazon
4.6
109 Reviews
amazon
4.5
34 Reviews

(Reviews last updated: August 2026)

What customers like about Olimpia Splendid Aryal S1 E Inverter 12 C?

  • High energy efficiency with A++ rating in cooling mode
  • Fast cooling and heating thanks to the powerful 12,000 BTU output
  • Quiet indoor performance when operating under Silent and Sleep modes
  • Advanced triple-stage air filtration system including activated carbon
  • Convenient operation via the dedicated smartphone application
  • Helpful smart functions like Self Clean and Follow Me remote sensing
  • Clean and minimalist Italian aesthetics that easily blend into rooms

What customers dislike about Olimpia Splendid Aryal S1 E Inverter 12 C?

  • The required Wi-Fi USB key kit is often sold separately
  • Horizontal airflow direction adjustments must be made manually
  • The outdoor compressor unit can be noisy during high-load operation
  • Occasional delays in manufacturer customer service responses

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