Three Mitsubishi Electric MSZ-EF18VGK indoor units from the MSZ-EF series, each with 1.8 kW cooling capacity, available in white, black or silver, connected to an MXZ-3F54VF3 outdoor unit with 5.4 kW cooling and 7.0 kW heating capacity: the combined capacity of the indoor units matches that of the outdoor unit, with energy efficiency class A+++ for cooling and A++ for heating on the A+++ to D scale. SEER 8.52 and SCOP 4.61, 19 dB(A) on the lowest fan setting, 195 mm installation depth, WiFi module with MELCloud app in every indoor unit. As a guideline, each indoor unit covers approximately 14 to 18 m²^*.

Performance and range of application

The Mitsubishi Electric MXZ-3F54VF3 outdoor unit has a cooling capacity of 5.4 kW with a controllable range of 2.9 to 6.8 kW and a heating capacity of 7.0 kW with a controllable range of 2.6 to 9.0 kW. For the three MSZ-EF18VGK indoor units, the page states a cooling capacity of 1.8 kW each, totalling 5.4 kW and thus exactly matching the capacity of the outdoor unit. The operating range is specified as minus 10 to plus 46 °C for cooling and minus 15 to plus 24 °C for heating. All three connections on the outdoor unit have 6 mm liquid and 10 mm gas lines.

Approximately 14 to 18 m²^* per indoor unit is a guideline for standard room height and normal insulation standards, not a binding design. Whether three smaller rooms are suitable for this configuration depends on room height, insulation, window area, shading and usage; we will clarify this upon request.

* Guideline based on the cooling capacity specified by the manufacturer, at a standard room height of approximately 2.5 m, normal insulation standards and average solar radiation. Different conditions on site, such as large window areas, sloped roofs or a high number of occupants, may require a different capacity class. The binding design is carried out on a project-specific basis. For a professional design of your property, please contact us.

The most important advantages at a glance

• White, black or silver: three casing colours, all with the same technology and price.
• Three MSZ-EF18VGK indoor units with 1.8 kW each connected to an outdoor unit with 5.4 kW cooling and 7.0 kW heating capacity: the combined capacity of the indoor units matches that of the outdoor unit.
• Energy efficiency class A+++ for cooling and A++ for heating on the A+++ to D scale; SEER 8.52, SCOP 4.61.
• 195 mm installation depth with a width of 885 mm and 11.5 kg per indoor unit.
• 19 dB(A) on the lowest fan setting and quiet operation for each indoor unit.
• Built-in WiFi module, MELCloud app, wired remote control can be connected.
• Three identical indoor units, each covering approximately 14 to 18 m², with the same 6 and 10 mm connections.
• Heating operation down to minus 15 °C with winter kit and anti-freeze protection.

Detailed functions

Colour options

The MSZ-EF18VGK indoor units are available in white (model code W), black (B) and silver (S); the colour variant is selected at the top of the page, and one set contains three indoor units in the same colour. The technology, dimensions and price are the same for all three colours.

Energy efficiency class A+++

The energy efficiency classes range from A+++ to D. A+++ for cooling requires an SEER of at least 8.5, and 8.52 is specified; A++ for heating requires an SCOP of at least 4.6, and 4.61 is specified. Both values describe the set of the outdoor unit and three indoor units, which is the same in every colour. This page does not state the power consumption of the outdoor unit.

WiFi and MELCloud

Yes. The WiFi module is built into every MSZ-EF18VGK indoor unit and is controlled via the manufacturer's MELCloud app, in which the three rooms appear separately; no retrofitting is required. Each indoor unit comes with an infrared remote control with a weekly programme and on/off timer, and a wired remote control can also be connected, but it is not included in the delivery.

Multi-split principle

Three indoor units, one outdoor unit with three connections, and three separate refrigerant lines: each room is controlled independently indoors, while only one location and one power supply are required outdoors. All three connections on the outdoor unit are fully utilised in this set.

Air quality

• Air purification filter in every indoor unit
• Silver ion air purification filter

Operating modes and comfort

• Cooling operation at outdoor temperatures from minus 10 to plus 46 °C
• Heating operation at outdoor temperatures from minus 15 to plus 24 °C, heat pump operation with inverter
• Econo Cool operating mode with adjusted airflow
• i-save: stored set-back temperature, accessible via button
• Quiet operation with reduced fan speed
• Automatic fan control and vertical louvre adjustment
• Anti-freeze protection in heating mode, winter kit on the outdoor unit
• Automatic restart after a power failure

Control

• Three infrared remote controls with weekly programme and on/off timer included
• WiFi module built into every indoor unit, MELCloud app
• Wired remote control can be connected as an accessory

Scope of delivery

Standard delivery includes:

• 1x Mitsubishi Electric MXZ-3F54VF3 outdoor unit, 5.4 kW cooling capacity
• 3x Mitsubishi Electric MSZ-EF18VGK indoor units in white (W), black (B) or silver (S), 1.8 kW cooling capacity each, built-in WiFi
• 3x infrared remote control with weekly programme

Additional items required

• Three sets of 6 and 10 mm refrigerant lines
• Floor console or load-bearing wall console for 58 kg
• Wired remote control, if desired
• Condensate pumps, depending on the installation situation
• Electrical supply and circuit protection
• Installation and commissioning by a specialist company

A WiFi module cannot be retrofitted in any colour variant; the control system is built-in.

Technical data

Indoor units

Model	3x Mitsubishi Electric MSZ-EF18VGK, MSZ-EF series
Colour	White (W), black (B) or silver (S), to choose from
Cooling capacity per indoor unit	1.8 kW
Heating capacity per indoor unit	Available on request; the information on the page is being checked
Sound pressure level	19 / 36 dB(A), low / high setting
Dimensions (WxHxD)	885 x 299 x 195 mm, 11.5 kg
Pipe connections liquid + gas	6 mm (1/4") + 10 mm (3/8") per indoor unit
WiFi	built-in, MELCloud app, no additional module
Features	Air purification filter, silver ion air purification filter, Econo Cool, i-save, quiet operation, weekly programme, anti-freeze protection, automatic restart, wired remote control connection

Outdoor unit

Model	Mitsubishi Electric MXZ-3F54VF3
Cooling capacity	5.4 kW, controllable from 2.9 to 6.8 kW
Heating capacity	7.0 kW, controllable from 2.6 to 9.0 kW
Sound pressure level outdoor unit cooling / heating	46 / 50 dB(A)
Dimensions outdoor unit (WxHxD)	840 x 710 x 330 mm, 58 kg
Pipe connections outdoor unit liquid + gas	3x 6 mm (1/4") + 3x 10 mm (3/8")
Connections for indoor units	3, all fully utilised in this set
Winter kit	yes

System

Energy efficiency class cooling / heating	A+++ / A++, A+++ to D scale
SEER / SCOP	8.52 / 4.61
Total cooling capacity of indoor units	5.4 kW, matches the outdoor unit
Cooling operating range	-10 to +46 °C
Heating operating range	-15 to +24 °C
Control	3x infrared remote control with weekly programme, MELCloud app via built-in WiFi, wired remote control can be connected

Frequently asked questions

In what colours is this set available?

The MSZ-EF18VGK indoor units are available in white (model code W), black (B) and silver (S); the colour variant is selected at the top of the page, and one set contains three indoor units in the same colour. The technology, dimensions and price are the same for all three colours.

What cooling and heating capacity does the set have?

The MXZ-3F54VF3 outdoor unit has a cooling capacity of 5.4 kW with a controllable range of 2.9 to 6.8 kW and a heating capacity of 7.0 kW with a controllable range of 2.6 to 9.0 kW. For each of the three MSZ-EF18VGK indoor units, the page states a cooling capacity of 1.8 kW; we will provide the controllable ranges and heating capacity of the indoor units upon request, and the information on this page is being checked. The set is rated A+++ for cooling and A++ for heating, on the A+++ to D scale, with SEER 8.52 and SCOP 4.61.

What do A+++ and SEER 8.52 mean for this set?

The energy efficiency classes range from A+++ to D. A+++ for cooling requires an SEER of at least 8.5, and 8.52 is specified; A++ for heating requires an SCOP of at least 4.6, and 4.61 is specified. Both values describe the set of the outdoor unit and three indoor units, which is the same in every colour. This page does not state the power consumption of the outdoor unit.

Can I control the system via an app?

Yes. The WiFi module is built into every MSZ-EF18VGK indoor unit and is controlled via the manufacturer's MELCloud app, in which the three rooms appear separately; no retrofitting is required. Each indoor unit comes with an infrared remote control with a weekly programme and on/off timer, and a wired remote control can also be connected, but it is not included in the delivery.

How do three indoor units connected to one outdoor unit work?

Three connections on the MXZ-3F54VF3 outdoor unit with 6 and 10 mm each, three indoor units, three separate refrigerant lines. Each room selects the temperature and operating mode independently, via remote control or in the MELCloud app; the outdoor unit combines the demand and provides between 2.9 and 6.8 kW.

Is the outdoor unit sufficient for all three rooms at the same time?

Yes, fully: three indoor units with 1.8 kW each result in 5.4 kW, and the outdoor unit is specified at exactly 5.4 kW. Each indoor unit receives its full rated capacity, even if all three rooms are running at full load simultaneously; the controllable range of the outdoor unit extends beyond this up to 6.8 kW. The manufacturer approves this configuration.

For which rooms is this set suitable?

According to the manufacturer, each indoor unit covers approximately 14 to 18 m²^*, so three smaller rooms: three children's rooms, bedrooms, study and guest rooms, three rooms in a guesthouse. Because the combined capacity of the indoor units matches that of the outdoor unit, all three rooms can run simultaneously continuously. With a depth of 195 mm and a width of 885 mm, the indoor units are the same size in all colours. The binding design is carried out on a project-specific basis.

How many indoor units are included in the delivery?

Three MSZ-EF18VGK indoor units in the selected colour (W, B or S), three infrared remote controls and one MXZ-3F54VF3 outdoor unit. Refrigerant lines, installation material, the console for the outdoor unit and the wired remote control are not included.

Is an installation set required for each indoor unit?

Yes, three, all the same: 6 mm (1/4") liquid and 10 mm (3/8") gas line per indoor unit, three times 6 and three times 10 mm on the outdoor unit, regardless of the colour. The pipe material is not included in the offer; the specialist company measures it according to the three routes to the rooms.

How large and heavy are the units?

Each indoor unit is specified at 885 x 299 x 195 mm and 11.5 kg, the same in all colours. The outdoor unit is specified at 840 x 710 x 330 mm and 58 kg and requires a floor console or a wall console designed for this weight; the specialist company decides what is suitable on site.

How loud is the system?

For the indoor units, 19 dB(A) on the low fan setting and 36 dB(A) on the high fan setting are stated in the data sheet, for the outdoor unit 46 dB(A) in cooling and 50 dB(A) in heating mode. Sound power levels are not stated. With quiet operation, the fan of the respective indoor unit runs even slower.

What filters does the indoor unit have?

According to the manufacturer, each indoor unit has an air purification filter and a silver ion air purification filter, the same for all three colours. The filters are cleaned or replaced as part of maintenance, three times for three indoor units.

How far apart can the indoor and outdoor units be located?

The maximum total pipe length, the length per indoor unit and the maximum height difference are not stated on this page; we will provide these values upon request. Since all three lines arrive at the outdoor unit, the planning begins at its installation location.

Can I use the system for heating in winter?

Yes. The heating operation is specified for outdoor temperatures from minus 15 to plus 24 °C, and the cooling operation from minus 10 to plus 46 °C. For heating, it has an A++ rating on the A+++ to D scale with a SCOP of 4.61; the outdoor unit provides 7.0 kW of heating capacity, and we can provide the heating capacity for each indoor unit upon request. The winter kit keeps the outdoor unit ready for operation in cold weather, while the anti-freeze protection prevents the indoor unit from blowing air until the heat exchanger is warm. We can check upon request whether three rooms can be heated using this system alone.

Can I install the air conditioning system myself?

No. Installation and commissioning must be carried out by a certified specialist company. You will need to prepare three cable routes, three condensate drains, the electrical supply line, and a location capable of supporting 58 kg.