The Ariston Prios Net 70 MUA1 is the top-of-range model in the Prios Net wall-mounted split air conditioning series, delivering a nominal cooling capacity of 7.0 kW (24,000 BTU/h). Designed for large residential spaces, commercial premises, and challenging open-plan environments, the 70 MUA1 brings together factory-integrated Wi-Fi, the Ariston NET app, ECO Mode, Turbo Mode, and 2D Inverter technology within a matched indoor/outdoor monoblock system. Charged with low-GWP R32 refrigerant, it achieves Class A++ energy efficiency in cooling and Class A+++ in heating during the warmer season. With the heat pump function active to −15 °C outdoor ambient, the 70 MUA1 provides powerful, efficient year-round climate control at a scale suitable for spaces up to approximately 80–100 m² depending on insulation. Product code: 4213076.
A++/A+++
Energy Class Cool/Heat
Built-in
Wi-Fi (Ariston NET)
≤80–100 m²
Recommended Room Size
🔴 Installer Notice — F-Gas, Electrical & Structural Requirements
R32 is mildly flammable (A2L) — installation and all refrigerant handling must be performed by a qualified F-Gas certified engineer. At 7.0 kW output, this unit draws a significantly higher electrical current than smaller models. A dedicated, appropriately rated circuit and MCB are mandatory — confirm electrical capacity before booking installation. The outdoor unit at this capacity is substantially heavier; structural integrity of the mounting location must be assessed before installation.
🟠 Site Selection & Planning Considerations
At 7.0 kW, the outdoor unit generates greater airflow and noise than smaller split systems. Position the outdoor unit away from neighbour boundaries where possible and ensure it does not face directly into a bedroom window — consider permitted development rules or local planning requirements for outdoor unit placement in conservation areas or listed buildings. For commercial installations, a competent person should assess noise impact in accordance with BS 4142.
🟢 High-Capacity Smart Comfort — The Prios Net Range Flagship
The 70 MUA1 is the maximum single-indoor-unit capacity in the Prios Net range, providing 7 kW of conditioned output from a single wall-mounted unit — suitable for large open-plan spaces, retail units, offices, and challenging residential applications. Its factory-integrated Ariston NET Wi-Fi means the same smart control, scheduling, and energy monitoring available on the smaller models is fully accessible at this output level. Paired with ECO Mode for economical continuous operation and Turbo Mode for rapid conditioning of large volumes, it is a versatile, capable system.
7 kW Output — Maximum Single-Unit Capacity
At 7.0 kW (24,000 BTU/h), the 70 MUA1 is specified for large rooms and commercial-scale applications where smaller units would be unable to maintain setpoint temperatures in challenging conditions. Inverter modulation means peak output is only deployed when needed; during normal operation in a moderately loaded space, the system runs at a fraction of its maximum, with correspondingly low energy consumption and noise.
2D Inverter — Efficiency at High Output
The 2D Inverter is particularly valuable at this capacity because the energy savings from continuous modulation — rather than on/off cycling — are proportionally larger. A 7 kW fixed-speed unit cycling on and off would consume considerably more electricity over a season than a 7 kW inverter running at 30–50% capacity to hold setpoint. The 2D Inverter architecture minimises both energy waste and compressor wear, supporting longer service life.
ECO Mode for Commercial Applications
In a commercial or larger residential context, ECO Mode provides an effective way to cap energy consumption during periods when the space is partially occupied or when ambient temperatures are moderate. By limiting maximum output, ECO Mode prevents the system from drawing peak power unnecessarily — useful for managing energy budgets in retail, hospitality, or office environments where electricity costs are significant.
Ariston NET — Remote Control for Business Premises
The built-in Wi-Fi and Ariston NET app allows a business owner, facilities manager, or property operator to pre-condition a large space remotely before occupancy — avoiding the inefficiency of running the system continuously when the building is empty. Scheduling and energy monitoring via the app give visibility of consumption patterns, supporting compliance with energy management policies and identifying opportunities to reduce operational costs.
Anti-Cold Air & Sleep Mode
At 7 kW, the volume of air moved through the indoor unit is considerable. The Anti-Cold Air function prevents the fan from running until the heat exchanger reaches a sufficient temperature in heating mode — avoiding uncomfortable blasts of cold air during warm-up. Sleep mode gradually adjusts setpoint and reduces fan speed as the night progresses, conserving energy during sleeping hours while maintaining comfort.
Golden Fin & Long-Term Durability
The larger outdoor unit in the 70 MUA1 benefits from Golden Fin anti-corrosion treatment on the heat exchanger coil, which is especially important at this scale — a corroded outdoor coil on a high-capacity system can cause significant efficiency losses and expensive repair bills. The Golden Fin coating maintains heat transfer efficiency and protects the coil against the salt air, acid rain, and urban pollution common across UK installation environments.
| Technical Specification — Ariston Prios Net 70 MUA1 (Product Code 4213076) |
| Performance |
| Nominal Cooling Capacity |
7.0 kW (24,000 BTU/h) |
| Reference Size (kBPU) |
24,000 kBPU |
| Energy Efficiency Class (Cooling) |
A++ |
| Energy Efficiency Class (Heating — Warmer Season) |
A+++ |
| Energy Efficiency Class (Heating — Average Season) |
A++ |
| Refrigerant & Environmental |
| Refrigerant Type |
R32 |
| GWP |
675 (low-GWP) |
| Outdoor Operating Range (Cooling) |
−15 °C to +50 °C |
| Outdoor Operating Range (Heating) |
−15 °C to +30 °C |
| Indoor Unit |
| Type |
Wall-mounted |
| Fan Speeds |
12 (incl. Turbo, Silent, Dehumidify) |
| Airflow Modes |
Vertical swing, Airflow Comfort, Anti-Cold Air |
| Outdoor Unit |
| Inverter |
2D Inverter (compressor + fan) |
| Outdoor Fan |
5-speed DC motor |
| Heat Exchanger Treatment |
Golden Fin anti-corrosion coating |
| Connectivity & Control |
| Wi-Fi |
Built-in (no dongle required) |
| App |
Ariston NET (iOS & Android) |
| Operating Modes |
Cool, Heat, Dehumidify, Fan, Auto, ECO, Turbo, Sleep, Follow Me, Low Ambient Cooling |
| Standby Power |
≈1 W |
| Piping & Installation |
| Max Pipe Length (standard charge) |
5 m |
| Max Pipe Length (total) |
25 m |
| Max Height Difference |
10 m |
| Identification |
| Product Code |
4213076 |
| Warranty |
2 years (official Ariston) |
Is the Prios Net 70 suitable for commercial use?
Yes. At 7.0 kW / 24,000 BTU, the 70 MUA1 is routinely specified for small to medium commercial premises — retail units, offices, restaurants, and hospitality spaces. Its built-in Wi-Fi and Ariston NET app provide the scheduling and remote monitoring capabilities valued in commercial settings. For spaces above approximately 80 m², or where multiple zones are required, a multi-split or VRF system may be more appropriate — consult a qualified HVAC engineer.
What are the electrical supply requirements for the 70 MUA1?
The Prios Net 70 MUA1 operates on a 230V, 50Hz single-phase supply. At 7.0 kW maximum output, the rated electrical input current is substantially higher than smaller Prios Net models. A dedicated circuit with an appropriately rated MCB is mandatory. Your installing engineer should verify supply capacity and cable sizing before commissioning. Do not use an existing shared circuit. Refer to the Ariston installation manual for full electrical requirements.
How does the 70 MUA1 manage noise in a large commercial or residential space?
The 2D Inverter allows the system to operate at partial load during steady-state conditions — in practice, a well-specified 70 MUA1 installed in a suitably sized space will often run at 40–60% of maximum output, with correspondingly lower noise from both indoor and outdoor units. The 12-speed indoor fan can be set to Silent mode via the remote or Ariston NET app, minimising indoor noise during sensitive periods. Outdoor unit noise is controlled by the 5-speed DC fan motor, which also modulates down at partial load.
Does the warranty cover both indoor and outdoor units?
Yes. The official Ariston 2-year warranty covers the complete matched system — both indoor and outdoor units as supplied in the Prios Net 70 MUA1 set. The warranty requires that installation is carried out by a qualified engineer in accordance with the Ariston installation manual and applicable UK regulations. Failure to observe installation requirements — including F-Gas certification for refrigerant handling — may affect warranty validity. Retain installation records and documentation.
What is the kBPU rating and why does the pricing sheet reference it?
kBPU (kilo British Thermal Units per hour) is an equivalent expression of BTU/h capacity used in trade pricing and specification sheets — it directly equals the BTU/h figure (24,000 kBPU = 24,000 BTU/h). It is used alongside the kW metric to support cross-referencing between European and legacy UK specification documents. In everyday terms: 7 kW ≈ 24,000 BTU/h. Both expressions refer to the same cooling output capacity.
Can I control multiple Prios Net units from the same Ariston NET account?
Yes. The Ariston NET app supports registration of multiple devices under a single account. This is useful for property operators or facilities managers who have installed Prios Net units in multiple zones or rooms — each unit can be controlled, scheduled, and monitored individually from the same app interface, without switching between accounts. Ensure each unit is connected to the building's Wi-Fi network during commissioning for seamless operation.
