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Hyundai
Elite White
- 3.5 kW
- Wi-Fi
- White
from 5,429 zł · incl. installation
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Rotenso
Mirai
The Rotenso Mirai 3.5 kW is a wall-mounted air conditioner rated A+++ in cooling and heating, with heating down to -30°C and SMART Eye functions that react to people in the room.
- Wi-Fi
- White
- Heating function
- Anti-allergen
- Cooling capacity
- 3.5kW
- Indoor unit noise
- from21dB(A)
- Heats in outdoor frost
- down to−30°C
Price incl. installation
Price on request
What installation includes
- Installation of the indoor and outdoor unit
- Up to a few metres of refrigerant, electrical and condensate routing
- Wall penetration and neat routing of the installation
- Carrying out the vacuum and checking the system for tightness
- Charging with refrigerant and starting the unit up
- Checking the operating parameters and configuring the controls
- Operating instruction and handover of the warranty documents
The Rotenso Mirai 3.5 kW is an inverter wall-mounted air conditioner that puts the greatest emphasis on winter operation and energy savings. The manufacturer quotes a nominal cooling capacity of 3.5 kW and a heating capacity of 4.3 kW, and in turbo mode heating output can reach 7.2 kW. The compressor varies its output between 1.0 and 4.8 kW in cooling and between 0.8 and 7.2 kW in heating. For an apartment in Warsaw this means a unit that cools comfortably in a heat wave and, outside summer, can seriously support your heating; we confirm the match for your particular room during the free assessment.
Mirai is rated A+++ in both cooling and heating: SEER is 9.2 and SCOP is 5.3. The outdoor operating range is very wide, from -25°C to 50°C in cooling and from -30°C to 30°C in heating. The manufacturer states 100% heating capacity at -15°C. The indoor unit runs at 21 to 43 dB, the outdoor unit reaches 56 dB, and the refrigerant is R32. The maximum pipe length between the units is 25 m.
Mirai also has functions that react to people in the room: SMART Eye Away directs the airflow away from people in cooling mode, SMART Eye Follow directs it after a person in heating mode, and SMART Eco Eye reduces the unit's work when nobody is in the room. App control is possible thanks to the Smart WiFi function. We quote the installed price after a free assessment, and below we describe the details and who this model will serve best.
Overview and positioning
Mirai is a 3.5 kW model designed to air-condition single rooms such as a living room, bedroom or home office. The variant described here has a nominal cooling capacity of 3.5 kW and a heating capacity of 4.3 kW. That capacity class suits rooms of typical apartment size, so before buying it is worth calculating the room volume, checking how much sun the windows get and counting the people and heat-producing equipment in the room.
Compared with other Rotenso models, Mirai stands out mainly for its operation at low temperatures and its A+++ energy class in both modes: SEER 9.2 in cooling and SCOP 5.3 in heating. The manufacturer describes heating even at -30°C and 100% heating capacity at -15°C, as well as presence sensors that control airflow and energy use. These are the features that matter most when the air conditioner is to work all year round, not just for a few summer weeks.
We position Mirai as a model for a customer who wants to use the air conditioner for heating too and cares about low energy use. The manufacturer writes that this year-round unit can work as the only source of heat in a home or office; in practice we always verify that for the specific building, because much depends on its insulation and heat demand. If you are looking for a simpler or quieter model, the LeoKlima range includes other Rotenso units.
Cooling and heating technology
According to the manufacturer, heating performance is determined by the compressor technology and the EXV valve, which let the air conditioner work in heating mode even in extreme weather. Cooling capacity varies from 1.0 to 4.8 kW and heating capacity from 0.8 to 7.2 kW. In TURBO mode the unit reaches a high heating output of up to 7.2 kW, which lets it heat a room in a shorter time. Operation is supported by DC motors and a digital inverter that smoothly match the speed to demand.
The outdoor temperature range is -25°C to 50°C in cooling and -30°C to 30°C in heating. The manufacturer also describes a winter package with a drain pan heater, which quickly melts snow and ice inside the outdoor unit, and a compressor crankcase heater, which prepares the compressor for starting at low temperatures. Before starting airflow in heating mode, the eMOTO system first starts the refrigeration circuit so that cold air is not blown into the room.
An air conditioner is an air-to-air heat pump, so the lower the outside temperature, the lower the heating output, even if the manufacturer declares operation at -30°C. That is why whether Mirai is enough as the only source of heat is decided from the building's insulation and heat demand, not from the claim alone. In addition, the SMART 12°C heating function can hold a steady temperature in an empty room after switching on by itself, and the Eco eMOTO mode reduces energy use by up to 60%; neither function is available in a Multi Split system.
Comfort and air quality
The indoor unit runs at 21 to 43 dB and the outdoor unit reaches 56 dB, which is worth considering when choosing where to mount it, especially if the bedroom window faces a balcony or courtyard. The manufacturer describes the eMOTO super quiet mode and a silent mode that mutes the audible signals and light messages of the unit. The sleep function gradually adjusts the room temperature at night, which limits energy use and supports rest, and the manufacturer also lists a SMART dusk sensor, not available in a Multi Split system.
The SMART Eye functions change how the unit blows air. In cooling mode SMART Eye Away directs the stream so that it avoids people in the room, and in heating mode SMART Eye Follow directs it after the person. SMART Eco Eye detects when nobody is present: after 30 minutes of absence the unit goes into ECO mode, and after 2 hours the operating frequency drops to the minimum level; when presence is detected it returns to optimal parameters. The manufacturer notes that this last function is not available in a Multi Split system.
Air cleanliness is handled by the HD iAIR pre-filter, the Silver Ion filter, the antibacterial filter and the iAIR Super Ionizer. The manufacturer states that the antibacterial filter disinfects the air of bacteria and viruses at a level of 99.97%. The automatic iAIR cleaning function dries the indoor unit's heat exchanger for 16 minutes after cooling or dry mode is switched off, which limits a source of bacteria and mould. The gold-coated fins are an anti-corrosion coating of the heat exchangers, not a self-cleaning function, so filters still need to be cleaned according to the manual.
Controls and Wi-Fi
Day to day the unit is operated with a wireless remote that has an additional temperature sensor. In SMART Follow mode the unit measures the temperature where the remote is placed rather than only at the indoor unit, which helps hold comfort exactly where you are. A wired controller is available as an option, and the unit has a built-in SMART port for connecting it. A timer and auto-restart memory simplify daily use.
The manufacturer describes Smart WiFi: the air conditioner can be controlled from a tablet or smartphone, both at home and away. It also states that the WiFi module function is an additional feature of the product and that the app is supplied by an external party. App control is therefore possible, but we do not assume the module is always in the box, so we confirm its availability at the quote stage. A humidity sensor is also available through the app, which the manufacturer describes as a function not available in a Multi Split system.
The display on the panel can be switched off completely, for example at night, which the manufacturer lists as part of user comfort. There is also a built-in BMS Modbus port for integration with a building management system, which is usually not needed in an apartment. During commissioning we show you how to use the remote, the SMART Eye sensors and the app, so the settings fit your daily routine and the way you use the room from the start.
Design and build
The indoor unit has a white, rounded housing with a horizontal louver at the bottom and a round indicator on the right. The dimensions are 895 mm wide, 248 mm deep and 298 mm high, and the weight is 13 kg. This is the heaviest and deepest of the three units we describe, so during installation we pay attention to the load-bearing capacity of the wall and free space above the unit, so that airflow and servicing are unobstructed.
Airflow is controlled automatically: the manufacturer describes automatic 4D louvers, with the horizontal louver controllable from the remote or a wired controller, and the wide eMOTO airflow angle. On top of that come the SMART Eye functions, which direct the stream relative to the position of people in the room. This combination makes particular sense in a bedroom or living room, where the airflow should not blow directly at people.
On the build side, the two-sided condensate drain is worth mentioning: water can be routed out from either the left or the right side of the indoor unit, which simplifies installation in different room layouts. The outdoor unit uses densely finned copper tubes, an optimized fan design and DC motors, which are meant to reduce air resistance and noise. We discuss the outdoor unit location during the assessment, taking service access and the neighbors' windows into account.
Installation and service
As part of the installation, LeoKlima mounts the indoor and outdoor units and runs up to a few meters of refrigerant, electrical and condensate lines. This includes the wall passage and neat routing of the installation. We then evacuate the system and check it for leaks, charge it with refrigerant and start the unit, check the operating parameters and configure the controls. Finally we walk you through the operation and hand over the warranty documents.
We agree the scope at a free assessment, and any extra charges are discussed before work begins. They can relate to a longer line run, drilling through concrete or reinforced concrete, wall chasing, a condensate pump or work from a lift platform. For Mirai the maximum pipe length between the units is 25 m, but in an apartment we usually aim for the shortest and least visible route. We quote the installed price after a free assessment.
After installation the unit needs ordinary, sensible care: regular cleaning of the filters in the indoor unit, checking that the condensate drain is clear and an annual service. The service includes cleaning the heat exchanger and checking the system for leaks and correct operation before the season. Especially when the unit works in winter, it is worth checking that the outdoor unit is not buried in snow or blocked by ice. The self-diagnosis function shows an error message on the unit's display or the wired controller, which shortens the time needed to find the cause during a service visit.
Who this model is for — summary
We recommend the Rotenso Mirai 3.5 kW for people who want to use an air conditioner all year round, including for heating, and who value low energy use. SEER 9.2, SCOP 5.3, heating down to -30°C, 100% heating capacity at -15°C and the SMART Eye sensors form a coherent set aimed at year-round operation. If automatic airflow management and saving energy when nobody is home matter to you, Mirai delivers on those expectations.
It is not the right choice for everyone. If your main need is the quietest possible operation in a bedroom, it is worth comparing noise levels: Mirai starts from 21 dB in the indoor unit. If the room is very large or the building poorly insulated, and the air conditioner is to be the only source of heat, a careful analysis of the demand is needed. That is why we always start with a conversation and a free assessment, during which we check the room volume, the place for the outdoor unit and the possible installation route.
If you are considering Mirai, write or call LeoKlima. We will measure the room, discuss the installation scope and possible extra charges, and then prepare a quote. We quote the installed price after a free assessment, with no obligation and no surprises later in the process. When choosing, a simple rule helps: compare models by their own figures and features, not by name alone. Mirai offers 3.5 kW of cooling capacity, SEER 9.2, SCOP 5.3 and heating down to -30°C. If those values fit your apartment, it is a good starting point for a quote.
Technical data
Specifications
| Cooling capacity (nom.) | 3.5 kW (range 1.0–4.8 kW) |
|---|---|
| Heating capacity (nom.) | 4.3 kW (range 0.8–7.2 kW) |
| SEER (cooling) | 9.2 — class A+++ |
| SCOP (heating) | 5.3 — class A+++ |
| Refrigerant | R32 |
| Noise level (indoor, min.–max.) | 21–43 dB(A) |
| Noise level (outdoor) | 56 dB(A) |
| Indoor unit dimensions (W/D/H) | 895/248/298 mm |
| Indoor unit weight | 13.0 kg |
| Operating range (cooling, outdoor) | -25°C to +50°C |
| Operating range (heating, outdoor) | -30°C to +30°C |
| Max. pipe length | 25 m |
| Version (manufacturer revision) | R15 |
Questions
Frequently asked questions
Does the Rotenso Mirai 3.5 kW heat in frost?
According to the manufacturer, the unit operates in heating mode at outdoor temperatures from -30°C to 30°C and reaches 100% heating capacity at -15°C. A winter package with a drain pan heater and a compressor crankcase heater is meant to protect the outdoor unit. Heating output does fall as the temperature drops, so before treating the air conditioner as the main source of heat we check the building's heat demand.
How loud is this air conditioner?
The indoor unit runs at 21 to 43 dB, and the outdoor unit reaches 56 dB. The manufacturer also describes an eMOTO super quiet mode and a silent mode that mutes the unit's audible signals. We choose the outdoor unit's location with neighbors and bedroom windows in mind.
Can I control the air conditioner over Wi-Fi?
Yes, the manufacturer describes a Smart WiFi function that lets you control the unit from a smartphone or tablet at home and away. The manufacturer states that the WiFi module is an additional feature of the product and that the app is supplied by an external party, so we confirm the module's availability during the quote.
What are the indoor unit dimensions and how long can the installation be?
The indoor unit is 895 mm wide, 248 mm deep and 298 mm high, and weighs 13 kg. The maximum pipe length between the units is 25 m. We quote the installed price after a free assessment.
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