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Rotenso
Elis Silver
A wall-mounted inverter air conditioner with a silver minimalist front panel, heating down to -20°C, 10-stage air purification and Wi-Fi.
- Wi-Fi
- Silver
- Heating function
- Self-cleaning
- Cooling capacity
- 3.5kW
- Indoor unit noise
- from22dB(A)
- Heats in outdoor frost
- down to−20°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 Elis Silver 3.5 kW (R17) is a wall-mounted inverter air conditioner in which the manufacturer focused on the look of the indoor unit: a silver, minimalist front panel presented as part of a timeless design. The rated cooling capacity is 3.5 kW (3502 W) and the rated heating capacity is 3.5 kW (3517 W), so the model is meant for a single room of average size, for example a living room, a study or a bedroom. We always choose the size by inspecting the room, not only from the floor area.
The key figures from the manufacturer's data are SEER 6.1 (class A++) and SCOP 4.0 (class A+). The indoor unit runs at a sound level from 22 to 43 dB and the outdoor unit emits 54 dB. The unit cools at outdoor temperatures from -15°C to 53°C and heats from -20°C to 30°C. The refrigerant is R32 and the maximum pipe length is 25 m. The indoor unit measures 777 × 205 × 250 mm and weighs 7 kg. The wide modulation range of the compressor means the unit works under a light load once the set temperature is reached.
In terms of equipment the manufacturer lists automatic 4D louvres, the Smart Wi-Fi function, the 10-stage PureR Stage purification system with an activated carbon filter, Eco mode and gold-plated fins that protect the exchanger against corrosion. We quote the installed price after a free assessment. Below we describe what these parameters mean in use, what installation in a Warsaw apartment looks like, and for whom this model is a sensible choice. For a customer in Warsaw, simple operating features matter too: a timer, auto-restart memory and self-diagnosis.
Overview and positioning
The Elis Silver is an air conditioner for someone who treats the indoor unit as part of the interior. The manufacturer describes the silver panel as minimalist and well suited to modern interiors in flats and offices. For many customers in Warsaw this is an important argument, because the air conditioner is hung on the only free wall in the living room and is visible every day. That is why we describe this model first through its look and installation spot, and only then through its functions.
The variant described on this page is marked R17 and has a capacity of 3.5 kW. The cooling capacity is 3502 W in a range from 1000 to 3770 W, and the heating capacity is 3517 W in a range from 1000 to 3810 W. Such a modulation range lets the compressor slow down once the room reaches the set temperature, and raise output only when demand grows, for example after opening a window on a hot day.
In energy classes the Elis Silver reaches A++ in cooling and A+ in heating, with SEER 6.1 and SCOP 4.0. We do not quote savings in money, because they depend on the insulation of the flat and on how it is used. During the free assessment we check whether 3.5 kW suits the given room and agree the place for both units with the customer. This approach avoids buying a unit of the wrong capacity, which on hot days would not keep up with cooling.
Cooling and heating technology
The Elis Silver is an inverter unit with a DC SKYr motor and Digital DC Inverter technology. The manufacturer points out that the energy-saving BLDC motor lets the indoor and outdoor units use many fan speeds, which limits energy consumption and shortens the time needed to reach the set temperature. As a result the room temperature is more stable and the operation of the unit is less bothersome for the household. The refrigerant is R32, which according to the manufacturer has a smaller environmental impact than older refrigerants.
The operating range is important when choosing. Cooling is possible at outdoor temperatures from -15°C to 53°C, and heating from -20°C to 30°C. The manufacturer stresses that inverter technology allows efficient heating of the room even at -20°C. As in every air conditioner, heating output falls as the outdoor temperature drops, so in the hardest frosts we treat the unit as a supplement to heating. The cooling range to 53°C is useful in summer on sunlit balconies, where the outdoor unit warms up more than the air in the shade.
For a faster response there is the eMOTO turbo mode, which briefly increases compressor and fan output and, according to the manufacturer, can shorten the time to reach the set temperature by up to 20 percent. The eMOTO Eco mode reduces energy consumption by up to 60 percent. In heating mode the airflow control system first starts the refrigeration circuit so as not to blow cold air. The manufacturer describes the Smart 8°C, Smart Follow and iClean functions with the reservation that they are not available in a Multi Split system.
Comfort and air quality
The indoor unit runs at a sound level from 22 to 43 dB. In a bedroom it is worth using the eMOTO super quiet mode and the sleep function, in which the temperature and fan speed are modified automatically to support night-time rest. The LED display on the panel can be switched off completely, which is useful at night. If a small child sleeps in the flat, it is worth setting lower fan speeds from the start and directing the airflow so that it does not fall on the cot.
The wide eMOTO airflow angle spreads the air around the room, and the automatic 4D louvres allow you to control the position of the horizontal and vertical louvres and their automatic swing from the remote or the wired controller. This way the stream of air can be directed so that it does not fall directly on the bed or desk. In practice it is worth setting the louvres at the first start-up and checking that the stream misses the places where we spend the most time.
Air quality is handled by the 10-stage PureR Stage purification system, which according to the manufacturer removes most bacteria, viruses, mites and fungi from the surroundings. It includes the HD iAIR pre-filter and 3-in-1 filters in two variants: catechin with silver ions and vitamin C, or photocatalytic with activated carbon and Cold Nano. The manufacturer states that activated carbon removes about 90 percent of gaseous pollutants. iAIR automatic cleaning dries and cleans the interior after operation, and the iClean function cools and heats the exchanger. The filters still require regular cleaning.
Controls and Wi-Fi
The basic means of operation is the wireless remote, with which we set the mode, the temperature, the fan speed and the louvre position, so most actions can be done without an app. A wired controller is also available, and the Smart Follow mode uses an additional temperature sensor built into the remote or controller, so the unit can regulate its work according to the temperature where we sit. The timer lets you schedule switching on and off, and auto-restart memory restores the previous mode after a brief power cut.
The manufacturer describes the Smart Wi-Fi function: with it the unit can be controlled from a tablet or smartphone, both at home and away. A Wi-Fi modem is needed for this. Control through an app is therefore possible, and we check the module configuration when you order and when we commission the unit. We do not promise that the module is always in the box, because the manufacturer's description does not say so outright. If someone prefers not to use the app, full operation remains available from the remote, so the lack of a Wi-Fi network in the flat does not limit the basic functions.
In addition the unit has a self-diagnosis function, which shows an error code on the display or on the wired controller, and the Smart 8°C function, which keeps an empty room at 8°C. Both functions are described with the manufacturer's reservation about unavailability in a Multi Split system. With a single unit in a flat this rarely concerns us, but we point it out when the customer plans an extension.
Design and build
The indoor unit measures 777 mm in width, 205 mm in depth and 250 mm in height, and weighs 7 kg. The manufacturer describes a luxurious front panel with a minimalist form that imitates a pane of dark glass and is meant to suit loft, industrial or glamour interiors. The manufacturer speaks both of a silver panel and of the look of dark glass, so the final shade is best judged in person or from a photograph. Such a form is neutral and does not dominate the wall, which will be appreciated by people who do not want the air conditioner to stand out.
The height of the unit is 250 mm, which gives a relatively flat body. For the customer what counts is that the unit can fit where the height above furniture or above a door is limited. The depth of 205 mm means the air conditioner protrudes from the wall only slightly, and the weight of 7 kg causes no problems when mounting on the bracket. We always verify the exact dimensions and the load-bearing capacity of the wall during the assessment, before we agree the hanging spot of the unit.
The exchanger in the indoor and outdoor unit is covered with a gold anti-corrosion coating. The gold-plated fins protect the metal against corrosion, which matters for a unit working outdoors. It is a protection of the material, not a self-cleaning function of the appliance, so the filters and the exchanger still need periodic servicing. Condensate can be drained on the left or right side of the indoor unit. The exchanger is protected by a coating, but this does not remove the need to clean the filters and to service the unit periodically.
Installation and service
As part of the installation LeoKlima mounts the indoor and the outdoor unit and runs up to a few metres of refrigerant, electrical and condensate lines. This includes the passage through the wall and neat routing of the installation. We then evacuate the system and check it for leaks, charge it with refrigerant and start the unit. At the end we check the operating parameters, configure the controls, give a walkthrough of the operation and hand over the warranty documents. We write all these elements into the offer so the customer knows what is in scope.
We agree the scope during a free assessment. Possible extra charges are discussed before the work starts: a longer route, drilling through concrete or reinforced concrete, wall chasing, a condensate pump and work from a lift platform. The manufacturer allows an installation length of up to 25 m, but standard installation covers a few metres, so longer runs are quoted separately. We quote the installed price after a free assessment. This way there are no surprises on the installation day, and the crew knows in advance which tools and materials it needs.
In operation, simple things matter: regular cleaning of the filters, checking that the condensate drain is clear, and an annual inspection with a check of the system for leaks and of the cleanliness of the exchangers. In winter, before switching on heating, we check that the outdoor unit is not buried in snow. A regular inspection reduces the risk of a failure during the season and helps keep the declared efficiency of the unit. If an error message appears, the first step is the code from self-diagnosis, which we pass on to service.
Who this model is for — summary
The Elis Silver suits someone for whom the look of the air conditioner matters as much as its parameters. A silver, minimalist panel, 10-stage purification and Wi-Fi make up a coherent set for a living room or study, and SEER 6.1 and SCOP 4.0 mean the unit is sensible in efficiency terms too. It is also a good choice for people who work from home and want quiet operation during calls and an even temperature at the desk.
Remember this model's figures: the indoor unit sound level is 22–43 dB and the outdoor unit's is 54 dB. The heating range reaches -20°C, which is enough for most Warsaw winters, but in the hardest frosts the air conditioner supplements heating. When planning the location of the outdoor unit we take neighbours, windows and balconies nearby into account. It is also worth knowing that the gloss and the dark, pane-like form of the panel call for gentle cleaning with a soft cloth.
If you are considering this model, book a free assessment. We will look at the flat, point out the installation place, work out the route and discuss possible extra charges. Only then will we give the installed price, because it depends on the conditions on site. During the visit we will present several location options, so you can pick the one that is least visible from where you sit most often, and explain how to clean the filters and when to plan a service visit.
Technical data
Specifications
| Cooling capacity (nom.) | 3.5 kW (range 1.0–3.8 kW) |
|---|---|
| Heating capacity (nom.) | 3.5 kW (range 1.0–3.8 kW) |
| SEER (cooling) | 6.1 — class A++ |
| SCOP (heating) | 4.0 — class A+ |
| Refrigerant | R32 |
| Noise level (indoor, min.–max.) | 22–43 dB(A) |
| Noise level (outdoor) | 54 dB(A) |
| Indoor unit dimensions (W/D/H) | 777/205/250 mm |
| Indoor unit weight | 7.0 kg |
| Operating range (cooling, outdoor) | -15°C to +53°C |
| Operating range (heating, outdoor) | -20°C to +30°C |
| Max. pipe length | 25 m |
| Version (manufacturer revision) | R17 |
Questions
Frequently asked questions
Does the Rotenso Elis Silver 3.5 kW heat in frost?
Yes. The manufacturer states a heating range at outdoor temperatures from -20°C to 30°C. Output falls with the frost, so in hard winters treat the air conditioner as a supplement to your heating.
How loud is the Elis Silver?
The indoor unit runs at a sound level from 22 to 43 dB, and the outdoor unit emits 54 dB. In a bedroom the eMOTO super quiet mode and the sleep function help.
Can I control the Elis Silver from a phone?
Yes, the manufacturer describes the Smart Wi-Fi function, which lets you control the unit from a smartphone or tablet at home and away. It requires a Wi-Fi modem, and we confirm its configuration when you order.
What are the indoor unit dimensions and how long can the installation be?
The indoor unit measures 777 × 205 × 250 mm (width, depth, height) and weighs 7 kg. The maximum installation length according to the manufacturer is 25 m. Standard installation covers up to a few metres of pipe run, and a longer run is discussed before the work as a possible extra charge.
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