3x1 Air Conditioner with WiFi Daikin Perfera 2.5 kW (2) + 3.5 kW

The Daikin Perfera 3x1 multisplit air conditioner with WiFi, 2.5 kW + 2.5 kW + 3.5 kW is a climate control solution designed to provide cooling and heating in three rooms using a single outdoor unit. This set combines two Daikin Perfera FTXM25B indoor units of 2.5 kW, one FTXM35B indoor unit of 3.5 kW and one Daikin 3MXM68A8 outdoor unit of 6.8 kW nominal cooling capacity.

Thanks to its Inverter technology, reversible heat pump with R-32 refrigerant and WiFi connectivity, it allows you to enjoy a comfortable temperature all year round. Each indoor unit has independent temperature control, fan speed and scheduling, adapting to the needs of each room.

The Daikin Perfera range stands out for incorporating advanced air treatment and comfort technologies, such as Flash Streamer, the intelligent two-zone motion sensor, Comfort+ flaps and 3D airflow distribution. Its quiet operation and energy-saving functions make this system an especially interesting option for homes, apartments, bedrooms, living rooms, studies and offices.

This multisplit configuration allows three rooms with different thermal needs to be air conditioned using a single outdoor unit, reducing the space required on facades, balconies and terraces compared with installing three independent systems.

Composition of the Daikin Perfera 3x1 air conditioner

The set is made up of the following units:

• 2 Daikin Perfera FTXM25B indoor units: wall-mounted units with a cooling class of 2.5 kW each, equivalent to approximately 8,530 BTU/h per unit, commercially 9000 BTU. They include WiFi, quiet operation, intelligent presence sensor and Flash Streamer technology.
• 1 Daikin Perfera FTXM35B indoor unit: wall-mounted unit with a cooling class of 3.5 kW, equivalent to approximately 11,940 BTU/h, commercially 12000 BTU. Suitable for living rooms, dining rooms, large bedrooms and other rooms with higher thermal needs.
• 1 Daikin 3MXM68A8 outdoor unit: Inverter multisplit heat pump with three independent refrigerant connections, R-32 refrigerant and a reference nominal capacity of 6.8 kW in cooling and 8.6 kW in heating.
• 3 Daikin ARC466A93 wireless remote controls: one for each indoor unit, to individually control temperature and the main air conditioning functions.

Main advantages of the Daikin Perfera 3x1 air conditioner

Independent air conditioning for three rooms

The Daikin Perfera multisplit system allows the three indoor units to be controlled separately, adjusting temperature, fan speed and operating schedules according to the needs of each room.

For example, the two 2.5 kW FTXM25B units can be installed in bedrooms or studies, while the 3.5 kW FTXM35B unit can be used in a living room, dining room or larger bedroom.

The three units can operate simultaneously, although they must work in the same general cooling or heating mode. It is not possible to cool one room while heating another.

The ability to use only the indoor units in occupied rooms allows the system to be adapted to the actual air conditioning needs.

Smart WiFi control via Daikin Onecta

The Daikin Perfera FTXM25B and FTXM35B indoor units feature WiFi connectivity for managing the air conditioning through the Daikin Onecta app.

This app allows each indoor unit to be controlled individually from a smartphone or tablet, even away from home, as long as there is an Internet connection.

Its main functions include:

• Individual on/off: allows each indoor unit to be switched on or off.
• Temperature adjustment: makes it easy to set a different temperature in each room.
• Operating mode selection: cooling, heating, fan and dehumidification.
• Fan speed: allows the airflow to be adapted to the needs of each room.
• Weekly scheduling: makes it easy to set personalized operating schedules.
• Energy monitoring: allows the tracking and saving functions available in the app to be used.
• Voice control: offers integration with compatible assistants such as Amazon Alexa and Google Assistant.

WiFi connectivity allows the air conditioning to be adapted to the occupants' daily routines, units to be programmed before arriving home and unnecessary consumption in rooms that are not being used to be avoided.

Flash Streamer technology to improve air quality

The Daikin Perfera indoor units incorporate Flash Streamer technology, an air treatment system developed by Daikin that uses high-speed electron discharge to help reduce certain allergens and odors present in the environment.

This technology is complemented by different filtration elements:

• Silver particle filter: helps capture certain allergens present in the air, such as pollen.
• Titanium apatite deodorizing filter: helps reduce unpleasant odors.
• Air filter: retains dust particles present in the air circulating through the indoor unit.

The combination of these technologies helps improve indoor air quality and provide a more comfortable environment during air conditioner operation.

To maintain the performance of the filtration system, it is recommended to clean and maintain the filters periodically according to the manufacturer's instructions.

Intelligent two-zone motion sensor

The Daikin Perfera indoor units incorporate an intelligent two-zone motion sensor that detects the location of people within the room and adapts the direction of the airflow to reduce direct drafts on occupants.

When no presence is detected for a certain period, the unit can automatically activate an energy-saving setting that helps reduce electricity consumption.

This technology improves thermal comfort and optimizes air conditioner operation without the need to constantly change settings from the remote control.

Even air distribution with Comfort+ and 3D airflow

Daikin's Comfort+ technology uses double flaps to improve air distribution and promote a homogeneous temperature throughout the room.

In cooling mode, the flaps can direct the air towards the upper part of the room to reduce direct drafts. In heating mode, they adapt the distribution to promote comfortable circulation of warm air.

In addition, the 3D airflow combines automatic vertical and horizontal movement to distribute cold or warm air throughout different areas of the room.

These technologies help reduce temperature differences and provide greater thermal comfort during operation.

Ultra-quiet operation at just 19 dB(A)

One of the main features of the Daikin Perfera range is its quiet operation. Both the two FTXM25B indoor units and the FTXM35B achieve a minimum sound pressure of 19 dB(A) in quiet cooling mode.

In heating mode, the three units can operate with a minimum sound pressure of 20 dB(A).

These levels make the system especially suitable for bedrooms, children's rooms, studies and other spaces where discreet air conditioning is desired.

The quiet mode reduces the indoor fan speed when rest or room tranquility is a priority.

Comfort and energy-saving functions

The Daikin Perfera indoor units incorporate different functions to adapt operation to the needs of each moment:

• Powerful mode: temporarily increases performance to reach the selected temperature more quickly, within the capacity limits of the multisplit system.
• Econo mode: limits the unit's maximum electrical consumption.
• Quiet mode: reduces fan speed to minimize operating noise.
• Night mode: adapts operation during rest hours.
• Dehumidification: helps reduce ambient humidity.
• Fan mode: allows room air to be moved without activating cooling or heating.
• Weekly scheduling: makes it easy to set personalized schedules.
• Auto restart: allows previous settings to be restored after a power outage.
• Automatic fan control: adapts the speed according to air conditioning needs.
• Automatic swing: distributes air through flap movement.

Cooling and heating capacity of the Daikin Perfera 3x1 set

The system combines two 2.5 kW class indoor units and one 3.5 kW unit, whose sum of individual capacities is 8.5 kW. However, the combined nominal cooling capacity when the three indoor units operate simultaneously is 6.8 kW, determined by the performance of the Daikin 3MXM68A8 outdoor unit.

The available capacity is distributed among the three indoor units depending on which ones are operating, the thermal demand of each room and the environmental conditions.

Cooling capacity

According to Daikin's official tables for the 3MXM68A8 outdoor unit and the 2.5 + 2.5 + 3.5 kW class combination, the reference values are:

• Minimum cooling capacity: 1.96 kW.
• Nominal cooling capacity: 6.8 kW, approximately 23,200 BTU/h.
• Maximum cooling capacity: 7.94 kW.
• Minimum electrical consumption in cooling: 0.36 kW.
• Nominal electrical consumption in cooling: 1.72 kW.
• Maximum reference electrical consumption in cooling: 2.45 kW.
• Nominal EER: 3.97.

When the three indoor units operate simultaneously under nominal conditions, the cooling capacity distribution indicated by Daikin for this class combination is:

• First FTXM25B 2.5 kW unit: 2.00 kW.
• Second FTXM25B 2.5 kW unit: 2.00 kW.
• FTXM35B 3.5 kW unit: 2.80 kW.

When only one or two indoor units are operating, the available capacity can adapt to the demand of the rooms in use, always within the limits of the system.

Heating capacity

The reversible heat pump allows the system to be used during the colder months, with a combined nominal heating capacity of 8.6 kW.

• Minimum heating capacity: 2.50 kW.
• Nominal heating capacity: 8.6 kW, approximately 29,340 BTU/h.
• Maximum heating capacity: 10.87 kW.
• Minimum electrical consumption in heating: 0.48 kW.
• Nominal electrical consumption in heating: 1.99 kW.
• Maximum reference electrical consumption in heating: 2.72 kW.
• Nominal COP: 4.34.

The nominal heating capacity distribution when the three indoor units operate simultaneously is:

• First FTXM25B 2.5 kW unit: 2.53 kW.
• Second FTXM25B 2.5 kW unit: 2.53 kW.
• FTXM35B 3.5 kW unit: 3.54 kW.

These values come from Daikin's official tables for the 25 + 25 + 35 class combination with the 3MXM68A8 outdoor unit. The capacities and consumption correspond to standardized test conditions and may vary depending on indoor and outdoor temperatures, installation conditions and simultaneous operation.

Energy efficiency of the Daikin Perfera 3x1 air conditioner

The system uses Inverter technology to regulate compressor speed according to air conditioning needs, avoiding unnecessary starts and stops and promoting efficient electricity consumption.

Daikin's official multisplit combination tables published in November 2025 indicate for the 25 + 25 + 35 class combination with the 3MXM68A8 outdoor unit a reference energy rating of A++ in cooling and A+ in heating for average climate.

The seasonal values published for this class combination are:

• Reference energy class in cooling: A++.
• Reference energy class in heating for average climate: A+.
• Reference SEER: 7.62.
• Reference SCOP for average climate: 4.16.
• Design load in cooling (Pdesignc): 6.8 kW.
• Design load in heating for average climate (Pdesignh): 5.3 kW.
• Reference standardized annual consumption in cooling: 313 kWh/year.
• Reference standardized annual consumption in heating: 1,782 kWh/year.

SEER and SCOP indicators express the seasonal energy performance of air conditioning equipment. The higher their value, the greater the amount of thermal energy supplied per unit of electrical energy consumed under standardized calculation conditions.

The annual consumption values indicated are standardized values used to compare equipment and do not represent the guaranteed actual consumption of a home. This will depend on insulation, selected temperatures, operating hours and climatic conditions.

Important about energy efficiency: the A++, A+, SEER 7.62 and SCOP 4.16 values come from Daikin's official table for the 25 + 25 + 35 class combination with the 3MXM68A8 outdoor unit. The documentation consulted does not expressly identify the FTXM-B generation indoor units, so these values should be considered reference values until the certified energy label for the exact references of the set is available.

Technical features of the Daikin FTXM25B 2.5 kW indoor units

The set includes two Daikin Perfera FTXM25B indoor units, designed to provide efficient air conditioning in bedrooms, studies and other small or medium-sized rooms.

The following specifications correspond to each of the two indoor units:

• Brand: Daikin.
• Series: Perfera.
• Reference: FTXM25B.
• Quantity: 2 units.
• Type: wall-mounted indoor unit.
• Color: white.
• Cooling capacity class: 2.5 kW.
• Cooling equivalent: approximately 8,530 BTU/h, commercially 9000 BTU.
• Dimensions (H × W × D): 298 × 804 × 252 mm.
• Weight per unit: 11.5 kg.
• Own nominal electrical consumption in cooling: 0.019 kW.
• Own nominal electrical consumption in heating: 0.018 kW.
• Airflow in cooling (high/medium/low/quiet): 11.9 / 8.9 / 6.3 / 4.9 m³/min.
• Airflow in heating (high/medium/low/quiet): 11.4 / 9.2 / 6.9 / 4.9 m³/min.
• Sound pressure in cooling (high/medium/low/quiet): 41 / 33 / 25 / 19 dB(A).
• Sound pressure in heating (high/medium/low/quiet): 39 / 34 / 27 / 20 dB(A).
• Sound power in cooling: 54 dB(A).
• Sound power in heating: 53 dB(A).
• Liquid refrigerant connection: 1/4" (6.4 mm).
• Gas refrigerant connection: 3/8" (9.5 mm).
• Condensate drain connection: 16 mm.
• Wireless remote control: ARC466A93.
• Compatible wired control: BRC073A1, according to Daikin connection conditions.
• Connectivity: WiFi via Daikin Onecta app.
• Comfort technologies: Comfort+, intelligent two-zone motion sensor and 3D airflow.
• Air treatment: Flash Streamer, silver particle filter and titanium apatite deodorizing filter.
• Additional functions: Powerful mode, Econo mode, quiet operation, fan, dehumidification and weekly scheduling.

The indoor units have a compact design, with a width of 804 mm and a depth of 252 mm, making them easy to integrate into bedrooms and moderately sized spaces.

Technical features of the Daikin FTXM35B 3.5 kW indoor unit

The Daikin Perfera FTXM35B indoor unit is a wall-mounted unit with a cooling class of 3.5 kW, aimed at living rooms, dining rooms, large bedrooms and other rooms with greater air conditioning needs.

It combines WiFi connectivity, advanced air treatment technologies and uniform distribution functions to provide comfort all year round.

• Brand: Daikin.
• Series: Perfera.
• Reference: FTXM35B.
• Quantity: 1 unit.
• Type: wall-mounted indoor unit.
• Color: white.
• Cooling capacity class: 3.5 kW.
• Cooling equivalent: approximately 11,940 BTU/h, commercially 12000 BTU.
• Dimensions (H × W × D): 298 × 804 × 252 mm.
• Weight: 11.5 kg.
• Own nominal electrical consumption in cooling: 0.029 kW.
• Own nominal electrical consumption in heating: 0.019 kW.
• Airflow in cooling (high/medium/low/quiet): 13.2 / 9.4 / 7.1 / 4.6 m³/min.
• Airflow in heating (high/medium/low/quiet): 11.1 / 9.4 / 6.9 / 5.1 m³/min.
• Sound pressure in cooling (high/medium/low/quiet): 45 / 37 / 29 / 19 dB(A).
• Sound pressure in heating (high/medium/low/quiet): 39 / 35 / 28 / 20 dB(A).
• Sound power in cooling: 58 dB(A).
• Sound power in heating: 53 dB(A).
• Liquid refrigerant connection: 1/4" (6.4 mm).
• Gas refrigerant connection: 3/8" (9.5 mm).
• Condensate drain connection: 16 mm.
• Wireless remote control: ARC466A93.
• Compatible wired control: BRC073A1, according to Daikin conditions.
• Connectivity: WiFi via Daikin Onecta app.
• Comfort technologies: Comfort+, intelligent two-zone motion sensor and 3D airflow.
• Air treatment: Flash Streamer, silver particle filter and titanium apatite deodorizing filter.
• Additional functions: Powerful mode, Econo mode, quiet operation, fan, dehumidification and weekly scheduling.

The electrical consumption indicated for the indoor units corresponds to their fans and electrical components. It should not be confused with the total consumption of the air conditioning system, which includes the compressor and the other components of the outdoor unit.

Technical features of the Daikin 3MXM68A8 outdoor unit

The Daikin 3MXM68A8 outdoor unit is an Inverter multisplit heat pump, designed to connect up to three compatible indoor units through independent refrigerant circuits.

It incorporates a hermetically sealed Swing compressor that adapts its operation to the thermal demand, providing cooling and heating using R-32 refrigerant.

• Brand: Daikin.
• Reference: 3MXM68A8.
• Full technical reference: 3MXM68A2V1B8.
• Type: 3x1 multisplit outdoor unit.
• Number of connections for indoor units: 3.
• Reference nominal cooling capacity: 6.8 kW.
• Reference nominal heating capacity: 8.6 kW.
• Maximum total capacity of connectable indoor classes: 11.0 kW.
• Sum of the proposed indoor unit capacity classes: 8.5 kW.
• Technology: Inverter.
• Compressor: hermetically sealed Swing.
• Refrigerant: R-32.
• Factory refrigerant charge: 2.00 kg.
• Global warming potential (GWP): 675.
• CO₂ equivalent of factory charge: 1.35 tonnes.
• Dimensions (H × W × D): 734 × 974 × 408 mm.
• Weight: 62 kg.
• Nominal sound pressure in cooling: 48 dB(A).
• Nominal sound pressure in heating: 48 dB(A).
• Power supply: single-phase, 220-240 V, 50 Hz.
• Outdoor operating temperature in cooling: from -10 °C to +50 °C.
• Maximum pipe length per indoor unit: 25 meters.
• Maximum total refrigerant piping length: 50 meters.
• Total length covered by the factory refrigerant charge: 30 meters.

The outdoor unit uses R-32 refrigerant, whose global warming potential is lower than that of R-410A. Installation must comply with the safety and refrigerant handling conditions established by the manufacturer.

Refrigerant connections of the Daikin Perfera 3x1

The Daikin Perfera 3x1 multisplit air conditioner has three independent refrigerant circuits that connect the two FTXM25B indoor units and the FTXM35B unit to the 3MXM68A8 outdoor unit.

Indoor unit connection diameters

The three indoor units have the same refrigerant diameters:

• First FTXM25B 2.5 kW unit: 1/4" (6.4 mm) liquid and 3/8" (9.5 mm) gas.
• Second FTXM25B 2.5 kW unit: 1/4" (6.4 mm) liquid and 3/8" (9.5 mm) gas.
• FTXM35B 3.5 kW unit: 1/4" (6.4 mm) liquid and 3/8" (9.5 mm) gas.

Outdoor unit connection diameters

The Daikin 3MXM68A8 outdoor unit has three refrigerant ports with the following diameters:

• Port A: 1/4" (6.4 mm) liquid and 3/8" (9.5 mm) gas.
• Port B: 1/4" (6.4 mm) liquid and 1/2" (12.7 mm) gas.
• Port C: 1/4" (6.4 mm) liquid and 1/2" (12.7 mm) gas.

Important about the connections: the three indoor units in this set have 3/8" gas connections, while ports B and C of the outdoor unit have a 1/2" diameter. For this reason, the corresponding refrigerant reducers will be required to adapt the 1/2" gas connections to 3/8" pipes.

The Daikin manual identifies reducers 2 and 4 to adapt the 1/2" gas connections to 3/8".

For the 25 and 35 indoor classes, the connection layout allows port A to be used without reduction and ports B and C with the corresponding reducers.

The outdoor unit includes a reducer set among its standard accessories. The installer must check that all the necessary adapters are available to correctly carry out the two circuits that require reduction.

It will also be necessary to respect the correspondence between the refrigerant and electrical connections of each indoor unit, following the manufacturer's official diagram.

Maximum pipe length and permitted height differences

To ensure the correct operation of the Daikin Perfera 3x1 system, the installation must respect the maximum refrigerant pipe lengths and height differences established by Daikin.

• Maximum pipe length per indoor unit: 25 meters.
• Maximum total refrigerant pipe length: 50 meters, adding the three runs together.
• Minimum pipe length per indoor unit: 3 meters.
• Maximum height difference between outdoor and indoor units when the outdoor unit is above: 15 meters.
• Maximum height difference between indoor units when the outdoor unit is above: 7.5 meters.
• Maximum height difference between outdoor and indoor units when the outdoor unit is below: 7.5 meters.
• Maximum height difference between indoor units when the outdoor unit is below: 15 meters.
• Total length covered by the factory refrigerant charge: 30 meters of liquid pipe.
• Additional refrigerant charge: 20 grams per additional meter when the total length exceeds 30 meters, following the procedure established by Daikin.
• Maximum permitted total refrigerant charge: 2.4 kg.

For example, an installation with refrigerant runs of 10, 15 and 20 meters can be designed, obtaining a total length of 45 meters. This distribution respects the maximum length limits established by the manufacturer, although the height differences and the rest of the technical conditions must also be checked.

When exceeding the 30 meters covered by the factory charge, it will be necessary to calculate and add the corresponding amount of R-32 refrigerant. For a total length of 45 meters, the theoretical calculation would be 300 additional grams, following the manufacturer's instructions.

The refrigerant length is calculated taking as a reference the outbound run of the liquid pipe between the units, without adding again the length of the gas pipe of the same circuit.

Insulation of refrigerant pipes

Daikin establishes specific requirements for the thermal insulation of refrigerant pipes, in order to reduce energy losses and prevent condensation from forming.

• 1/4" liquid pipes: suitable thermal insulation for refrigeration.
• 3/8" gas pipes: suitable thermal insulation for refrigeration.
• Material: suitable insulating foam for refrigeration installations, with a minimum thermal resistance of 120 °C.
• Refrigerant pipes: seamless copper, phosphorus deoxidized and suitable for R-32 refrigerant.
• Minimum wall thickness for 1/4", 3/8" and 1/2" pipes: 0.8 mm, subject to applicable regulatory and pressure requirements.

When the ambient temperature exceeds 30 °C and relative humidity is above 80%, Daikin establishes a minimum insulation thickness of 20 mm to prevent surface condensation.

The installer must also check the condition of the refrigerant pipes, condensate drainage, electrical supply and the necessary clearances around the outdoor unit.

What spaces is the Daikin Perfera 3x1 2.5 + 2.5 + 3.5 kW recommended for?

The Daikin Perfera multisplit 3x1 2.5 + 2.5 + 3.5 kW is especially interesting for homes and offices that need to air condition three rooms with different thermal needs.

A common layout may consist of installing the two 2.5 kW FTXM25B units in bedrooms, children's rooms or studies, while the 3.5 kW FTXM35B unit is used in a living room, dining room or larger bedroom.

The area that each unit can air condition will depend on the home's insulation, orientation, ceiling height, glazed surface, occupancy and climatic conditions.

It should also be borne in mind that, when the three indoor units operate simultaneously, the available capacity is distributed according to the system's total reference capacity, 6.8 kW in cooling and 8.6 kW in heating.

To ensure proper sizing, it is recommended that a professional calculate the cooling and heating needs of each room before installation.

Installation and required materials

The composition of this Daikin Perfera 3x1 set includes two FTXM25B indoor units, one FTXM35B indoor unit and one 3MXM68A8 outdoor unit, together with their corresponding remote controls and the standard accessories supplied by the manufacturer.

The materials required for installation are not part of the indicated composition of the set. Depending on the characteristics of each home or premises, copper refrigerant piping, insulation, electrical and interconnection wiring, condensate drainage pipes, trunking, outdoor unit supports and fixing elements will be required.

It will also be necessary to check the availability of the refrigerant reducers needed to adapt the gas connections of ports B and C of the outdoor unit and verify the correspondence between the refrigerant and electrical circuits of the three indoor units.

The installation must respect the maximum pipe lengths, height differences, power supply conditions and start-up instructions established by Daikin.

The installation must be carried out by qualified professionals accredited to work with air conditioning equipment using fluorinated gases, in compliance with current regulations and the manufacturer's official technical instructions.

With its ability to air condition three rooms, independent WiFi control, Inverter technology, quiet operation and advanced air treatment technologies, the Daikin Perfera multisplit 3x1 FTXM25B + FTXM25B + FTXM35B + 3MXM68A8 air conditioner offers a versatile air conditioning solution for enjoying cooling and heating all year round.