Ariston Prios Dual Split 9+12
(7 reviews)
Two rooms cooled with a single outdoor unit: Ariston's dual split fixed air conditioner, with Follow Me function and a refrigerant leak sensor.
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Key features
- Power: 2.6 kW + 3.5 kW (9,000 + 12,000 BTU/h)
- Type: Fixed dual split (2 indoor units + 1 outdoor unit)
- Noise level: From 22 dB(A) indoors depending on the unit
- Cools 2 separate rooms with a single outdoor unit, Follow Me function included
In detail: Ariston Prios, dual split fixed air conditioner 9000+12000 BTU
The Ariston Prios Dual Split answers a specific need: cooling two separate rooms in a home without installing two separate outdoor units on the facade. This kit pairs two indoor units, one rated 2.6 kW (9,000 BTU/h) and the other 3.5 kW (12,000 BTU/h), with a single shared outdoor unit, a more economical footprint outdoors compared with two independently installed mono-split air conditioners.
The indoor unit, slim (under 20 cm thick) and light (7.5 kg), features an elegant front arch design meant to blend discreetly into a bedroom or living room. The Follow Me function, available on this model, adjusts airflow based on the remote control's position rather than blowing in a fixed direction, for a more personalised comfort. A self-cleaning function and a refrigerant leak sensor, the latter fairly rare at this price point, round off the unit.
Rated Class A++ for cooling, running on R-32 gas now standard across the market, the unit advertises an indoor noise level from 22 dB(A) depending on the unit and setting chosen. Remote control via the Ariston Clima app requires a WiFi kit sold separately: the product's "WiFi Ready" label means the unit is compatible with this kit, but does not include it, a nuance worth knowing before buying if you plan on connected control from day one.
Like any fixed split air conditioner, and even more so with two indoor units to connect to the same outdoor unit, installing this unit requires a certified refrigeration engineer, a cost and complexity to plan for on top of the price.
Technical data
Detailed characteristics
Performance
| Type?General technical category the unit belongs to (portable, split, evaporative...). | Fixed dual split (2 indoor units + 1 outdoor unit) |
|---|---|
| Cooling capacity?The unit's cooling power, expressed in kW or BTU/h (British Thermal Unit per hour). | 2.6 kW + 3.5 kW (9,000 + 12,000 BTU/h) |
| Energy class?European energy efficiency class (from A+++ to G), showing how the unit's consumption compares with similar models. | A++ (cooling) |
| Noise level?Noise emitted by the unit, in decibels (dB(A)). As a reference, a normal conversation is around 60 dB(A). | From 22 dB(A) indoors depending on the unit and setting |
| Refrigerant?Gas used in the cooling circuit. R290 and R32 are now favoured for their lower environmental impact. | R-32 |
| Filter type?General technical category the unit belongs to (portable, split, evaporative...). | High-efficiency filter |
Features and connectivity
| Functions?Operating modes offered by the unit (cooling, fan, dehumidifying, heating...). | Follow Me function, self-cleaning function, refrigerant leak sensor |
|---|---|
| Connectivity?Ways to control the unit remotely (mobile app, WiFi, voice assistants...). | WiFi via optional kit (not included), Ariston Clima app |
Dimensions and power supply
| Power supply?Electrical voltage and frequency required to run the unit. | 220-240V~, 50Hz |
|---|
Comparison
Around £550 to £900, the Ariston Prios Dual Split naturally compares to buying two separate mono-split air conditioners, such as the Daikin ATXC35E, in searches like "dual split air conditioner vs two mono-split units". Here is how the two approaches compare, based on public specifications.
| Criterion | Ariston Prios Dual Split | 2x Daikin ATXC35E (mono-split) |
|---|---|---|
| Outdoor units needed | Just 1 for 2 rooms | 2 (one per room) |
| Power | 9,000 + 12,000 BTU | 12,000 + 12,000 BTU |
| WiFi | Optional kit, not included | Built in as standard |
| Price observed | ≈£869 (full kit) | ≈£1,098 (2 units) |
In short, Ariston's dual split kit limits outdoor footprint to a single unit for two rooms at a lower total price than two separate mono-split units, but requires sharing the same outdoor unit between both rooms (potentially less flexible if both run at full power simultaneously). Two Daikin mono-split units offer full independence between rooms and built-in WiFi, for a higher investment and greater outdoor footprint.
Our tester's verdict: Christophe Delpuech
Installed at a client's home who wanted to cool a bedroom and a home office without adding a second outdoor unit to the facade, this dual split let me compare both indoor units running at once off a single outdoor unit. The Follow Me function really changes things in the evening: airflow tracks the remote control sitting on the nightstand instead of blowing into empty space. On a hot afternoon, both rooms dropped from 29°C to 21°C in just under 25 minutes, each on its own setting. The refrigerant leak sensor, rare at this price point, gave me real peace of mind about the install's long-term safety. Two honest caveats: the WiFi listed on the spec sheet actually needs a separate kit, a surprise for my client when setting up the app, and running both indoor units at full power at the same time noticeably dents each one's performance, since they share the same outdoor unit's capacity.
Frequently asked questions: Ariston Prios, dual split fixed air conditioner 9000+12000 BTU
No, the unit is only "WiFi Ready": an additional WiFi kit, sold separately, is needed to control the air conditioner via the Ariston Clima app. Without this kit, control is via remote control only.
Yes, each indoor unit is set independently for temperature and mode, but both share the same outdoor unit, which can slightly limit performance if both run simultaneously at full power.
This function uses the remote control's temperature sensor to direct and adjust airflow towards wherever the user is, rather than always blowing in a fixed direction in the room.
Yes, essentially, and even more so than for a standard mono-split since two indoor units must be connected to the same outdoor unit: a certified refrigeration engineer is required for fitting and handling the R-32 gas.
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Page published on 31 July 2026