Three Mitsubishi Electric MSZ-AY25VGK indoor units, each with 2.5 kW, connected to one MXZ-3F54VF outdoor unit with 5.4 kW cooling and 7.0 kW heating capacity: a multi-split set from the MSZ-AY series for three rooms, with energy efficiency class A+++ for cooling and A++ for heating on the A+++ to D scale. SEER 8.52, SCOP 4.61, 18 dB(A) on the lowest fan speed, WiFi module built into all three indoor units. Each indoor unit is designed for approximately 19 to 25 m²^* as a guideline.

Performance and range of use

The Mitsubishi Electric MXZ-3F54VF outdoor unit is specified with 5.4 kW cooling capacity, adjustable from 2.9 to 6.8 kW, and 7.0 kW heating capacity, adjustable from 2.6 to 9.0 kW. The three MSZ-AY25VGK indoor units are specified with 2.5 kW cooling and 3.2 kW heating capacity each, totaling 7.5 kW cooling capacity, which is 2.1 kW more than the outdoor unit; how this affects operation is explained in the frequently asked questions. The operating range for cooling is from minus 10 to plus 46 °C and for heating from minus 15 to plus 24 °C outdoor temperature. For the three connections, three 6 mm and three 10 mm lines are specified.

The area of approximately 19 to 25 m²^* applies to each of the three indoor units individually and is a guideline for standard room height and normal insulation standards. Whether three rooms of this size fit together or one room needs a more powerful indoor unit depends on room height, insulation, window area, shading, and usage; we check 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 sunlight. Different conditions on site, such as large window areas, sloped roofs, or a high number of occupants, may require a different performance class. The binding design is carried out on an object-by-object basis. For a professional design of your property, please contact us.

The most important advantages at a glance

• Three rooms, one outdoor unit: three indoor units with 2.5 kW each connected to 5.4 kW cooling and 7.0 kW heating capacity.
• Energy efficiency class A+++ / A++ on the A+++ to D scale, SEER 8.52 and SCOP 4.61.
• 18 dB(A) in each of the three rooms on the lowest fan speed, night mode in each room.
• WiFi module built in three times, all rooms in one app, no additional module.
• Three identical indoor units, each for approximately 19 to 25 m², same connections, same filters.
• Air purification filter with silver ion coating and V-Blocking filter in each indoor unit.
• Three infrared remote controls with weekly program and i-save.
• Heating operation down to minus 15 °C outdoor temperature, 7.0 kW heating capacity at the outdoor unit.

Functions in detail

Energy efficiency class A+++

A+++ is the highest level on the A+++ to D scale for cooling and requires a SEER of at least 8.5; for this set, 8.52 is specified. For A++ in heating, the SCOP must be at least 4.6, 4.61 is specified. The power consumption of the outdoor unit is 1.32 kW in cooling and 1.40 kW in heating operation according to the data sheet.

Built-in WiFi

Yes. All three MSZ-AY25VGK indoor units have the WiFi module built in from the factory, recognizable by the K suffix in the model code; no additional module is required. This allows all three rooms to be controlled from a single app. This page does not state the name of the app, but we will tell it to you upon request. In addition, each indoor unit comes with an infrared remote control with a weekly program.

Multi-split principle

An outdoor unit with three connections supplies three indoor units, each via its own refrigerant line. Outside, it requires a location and one supply line instead of three; inside, each room is controlled separately. In this set, all three connections are occupied.

Air quality

• Air purification filter with silver ion coating in each indoor unit
• Integrated V-Blocking filter
• Quad Connect Plasma filter optional as an accessory, not included in the delivery scope

Operating modes and comfort

• Cooling operation from minus 10 to plus 46 °C outdoor temperature
• Heating operation from minus 15 to plus 24 °C outdoor temperature
• Night mode with reduced fan speed and power, per room
• i-save: stored reduced temperature, accessible via button
• Horizontal air outlet for distribution in the room
• Matte white housing

Control

• Three infrared remote controls with weekly program included
• WiFi module in each indoor unit, all three rooms via app

Delivery scope

Included in the standard scope:

• 1x Mitsubishi Electric MXZ-3F54VF outdoor unit, 5.4 kW cooling capacity
• 3x Mitsubishi Electric MSZ-AY25VGK indoor unit, 2.5 kW cooling capacity each, built-in WiFi
• 3x infrared remote control with weekly program

What you need additionally

• Three sets of lines with 6 and 10 mm each
• Floor console or load-bearing wall console for 58 kg
• Quad Connect Plasma filter, if desired
• Condensate pumps, depending on the installation situation
• Electrical supply line and protection
• Installation and commissioning by a specialist company

Technical data

Indoor units

Model	3x Mitsubishi Electric MSZ-AY25VGK
Cooling capacity per indoor unit	2.5 kW, adjustable from 0.9 to 3.4 kW
Heating capacity per indoor unit	3.2 kW, adjustable from 1.0 to 4.1 kW
Sound pressure level	18 / 36 dB(A), low / high speed
Dimensions (WxHxD)	798 x 299 x 245 mm, 10.5 kg
Pipe connections Liquid + Gas	6 mm (1/4") + 10 mm (3/8") per indoor unit
WiFi	built-in, no additional module
Features	Air purification filter with silver ion coating, V-Blocking filter, night mode, i-save, horizontal air outlet, weekly program

Outdoor unit

Model	Mitsubishi Electric MXZ-3F54VF
Cooling capacity	5.4 kW, adjustable from 2.9 to 6.8 kW
Heating capacity	7.0 kW, adjustable from 2.6 to 9.0 kW
Power consumption Cooling / Heating	1.32 / 1.40 kW
Sound pressure level outdoor unit Cooling / Heating	46 / 50 dB(A)
Dimensions outdoor unit (WxHxD)	840 x 710 x 330 mm, 58 kg
Connections for indoor units	3, all occupied in this set

System

Energy efficiency class Cooling / Heating	A+++ / A++, scale A+++ to D
SEER / SCOP	8.52 / 4.61
Total cooling capacity indoor units	7.5 kW
Cooling operating range	-10 to +46 °C
Heating operating range	-15 to +24 °C
Power supply	220 to 240 V, 50 Hz, 1 phase
Control	3x infrared remote control with weekly program, app via built-in WiFi

Frequently asked questions

What cooling and heating capacity does the set have?

The MXZ-3F54VF outdoor unit is specified with 5.4 kW cooling capacity in a range of 2.9 to 6.8 kW and 7.0 kW heating capacity in a range of 2.6 to 9.0 kW. Each of the three MSZ-AY25VGK indoor units is specified with 2.5 kW cooling capacity (0.9 to 3.4 kW) and 3.2 kW heating capacity (1.0 to 4.1 kW). The manufacturer states energy efficiency classes of A+++ for cooling and A++ for heating on the A+++ to D scale, the SEER is 8.52, the SCOP is 4.61.

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

A+++ is the highest level on the A+++ to D scale for cooling and requires a SEER of at least 8.5; for this set, 8.52 is specified. For A++ in heating, the SCOP must be at least 4.6, 4.61 is specified. The power consumption of the outdoor unit is 1.32 kW in cooling and 1.40 kW in heating operation according to the data sheet.

Can I control the system via an app?

Yes. All three MSZ-AY25VGK indoor units have the WiFi module built in from the factory, recognizable by the K suffix in the model code; no additional module is required. This allows all three rooms to be controlled from a single app. This page does not state the name of the app, but we will tell it to you upon request. In addition, each indoor unit comes with an infrared remote control with a weekly program.

How do three indoor units work with one outdoor unit?

The MXZ-3F54VF outdoor unit has three connections, each supplying an indoor unit via its own refrigerant line. Temperature, fan speed, and time program are set separately for each room; the power comes from the common outdoor unit, which adjusts between 2.9 and 6.8 kW.

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

The three indoor units are specified together with 7.5 kW, the outdoor unit with 5.4 kW. If all three rooms run at full load at the same time, the outdoor unit distributes its power, each indoor unit then gets about seven tenths of its rated capacity. Whether this case occurs depends on the usage of the three rooms; if only one or two indoor units are in operation, the full power is available to them. The design for three indoor units with 2.5 kW each comes from the manufacturer.

For which rooms is this set suitable?

According to the manufacturer, each indoor unit covers approximately 19 to 25 m²^*, so three rooms of this size: three bedrooms, two children's rooms and one study, three hotel rooms or three smaller offices. All three indoor units are identical, with 18 dB(A) on the lowest fan speed. For other room sizes, we offer further combinations; the binding design is carried out on an object-by-object basis.

How many indoor units are included in the delivery scope?

Three MSZ-AY25VGK indoor units with 2.5 kW each, three infrared remote controls and one MXZ-3F54VF outdoor unit. Not included are refrigerant lines, installation material and the placement or mounting of the outdoor unit.

Is an installation set required for each indoor unit?

Yes, three, and all three are the same: the manufacturer specifies three times 6 mm (1/4") on the liquid side and three times 10 mm (3/8") on the gas side. The material is not included in the delivery scope; the specialist company puts it together suitable for the three line routes.

How large and how heavy are the units?

The indoor units are specified with 798 x 299 x 245 mm and 10.5 kg, all three identical. The outdoor unit is specified with 840 x 710 x 330 mm and 58 kg and stands on a floor console or a wall console designed for this weight. Which solution fits, the specialist company checks on site.

How loud is the system?

Each indoor unit is specified with 18 dB(A) on the low and 36 dB(A) on the high fan speed. For the outdoor unit, 46 dB(A) in cooling and 50 dB(A) in heating operation are stated in the data sheet. The page does not state a sound power level. The night mode reduces fan speed and power in the night hours, separately in each room.

What filters does the indoor unit have?

Each of the three indoor units has, according to the manufacturer, an air purification filter with silver ion coating and an integrated V-Blocking filter. The Quad Connect Plasma filter is mentioned as an accessory and not included. The cleaning of the filters is part of regular maintenance, accordingly three times for three indoor units.

How far apart can the indoor and outdoor units be?

The page states neither the permissible total line length nor the length per indoor unit or the permissible height difference; we will tell you these values upon request. With three line routes, the location of the outdoor unit is the most important planning factor because all three lines converge there.

Can I use the system for heating in winter?

Yes. For heating operation, outdoor temperatures from minus 15 to plus 24 °C are specified, for cooling operation minus 10 to plus 46 °C. In heating, class A++ on the A+++ to D scale applies with a SCOP of 4.61; the outdoor unit heats with 7.0 kW, each indoor unit with 3.2 kW. With i-save, each indoor unit stores a reduced temperature and recalls it via button, for example at night. Whether the system can supply three rooms as the sole heating, we check upon request.

Can I install the air conditioner myself?

No. Installation and commissioning are carried out by a certified specialist company. For this set, three line routes, three condensate drains and one 58 kg outdoor unit need to be planned, which needs a load-bearing location.