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

The Daikin Perfera 2x1 multisplit air conditioner with WiFi, 2.5 kW + 3.5 kW is a climate control solution designed to provide cooling and heating in two rooms using a single outdoor unit. This set combines a Daikin Perfera FTXM25B 2.5 kW indoor unit, an FTXM35B 3.5 kW indoor unit, and a Daikin 2MXM40A9 outdoor unit with a nominal cooling capacity of 4.0 kW.

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

The Daikin Perfera range stands out for incorporating advanced air treatment technologies such as Flash Streamer, a two-zone intelligent motion sensor and 3D airflow distribution. Its quiet operation and energy-saving functions make this system a particularly attractive option for homes, apartments, bedrooms, living rooms and offices.

Composition of the Daikin Perfera 2x1 air conditioner

This multisplit set is made up of the following units:

• 1 Daikin Perfera FTXM25B indoor unit: wall-mounted unit with 2.5 kW cooling class, equivalent to approximately 8,530 BTU/h, commercially 9000 BTU. It features WiFi, quiet operation, presence sensor and Flash Streamer technology.
• 1 Daikin Perfera FTXM35B indoor unit: wall-mounted unit with 3.5 kW cooling class, equivalent to approximately 11,940 BTU/h, commercially 12000 BTU. Recommended for rooms with higher thermal needs, such as living rooms, dining rooms and large bedrooms.
• 1 Daikin 2MXM40A9 outdoor unit: Inverter multisplit unit with two independent refrigerant connections, R-32 refrigerant and nominal capacity of 4.0 kW in cooling and 4.2 kW in heating.
• 2 Daikin ARC466A93 wireless remote controls: one for each indoor unit, to control temperature and climate functions individually.

This configuration allows two spaces to be air conditioned using a single outdoor unit, reducing the space occupied on facades, terraces and balconies compared with installing two independent air conditioning systems.

Main advantages of the Daikin Perfera 2x1 air conditioner

Independent climate control for two rooms

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

For example, the 2.5 kW FTXM25B unit can be installed in a bedroom or office and the 3.5 kW FTXM35B unit in a living room or a larger room.

Both 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.

Smart WiFi control via Daikin Onecta

The Daikin Perfera FTXM25B and FTXM35B indoor units feature WiFi connectivity so you can manage climate control from a smartphone or tablet using the Daikin Onecta app.

The app allows you to control the indoor units individually from anywhere with an Internet connection.

Its main functions include:

• Individual on/off control of each indoor unit.
• Independent temperature adjustment for each room.
• Selection of cooling, heating, fan and dehumidification modes.
• Fan speed adjustment.
• Scheduling and weekly programming.
• Control of key functions through compatible voice assistants such as Amazon Alexa and Google Assistant.

WiFi control makes it possible to adapt operation to the occupants' daily routines and avoid unnecessary consumption in rooms that are not being used.

Flash Streamer technology to improve air quality

The Daikin Perfera indoor units incorporate Flash Streamer technology, designed to help reduce certain allergens, pollutants and odours present in the air.

This technology is complemented by different filtration elements:

• Silver particle filter: helps capture certain allergens such as pollen.
• Titanium apatite deodorising filter: helps reduce unpleasant odours.
• Air filter: traps dust particles present in the air circulating through the unit.

These technologies help improve indoor air quality and provide greater comfort in air-conditioned rooms.

Two-zone intelligent motion sensor

The indoor units include an intelligent presence sensor that detects the location of people within the room and adjusts the direction of the airflow to avoid direct drafts on occupants.

When no presence is detected for a certain period, the system can automatically activate energy-saving operation, helping reduce electricity consumption.

Even air distribution with Comfort+ and 3D airflow

Daikin's Comfort+ technology uses dual flaps to improve air distribution in the room and promote a more even temperature.

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

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

Ultra-quiet operation of just 19 dB(A)

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

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

These sound levels make them a suitable option for bedrooms, children's rooms, offices and other spaces where discreet climate control is desired.

Comfort and energy-saving functions

The Daikin Perfera air conditioner offers different modes to adapt its operation to the needs of each moment:

• Powerful mode: temporarily increases performance to reach the selected temperature more quickly.
• Econo mode: limits the unit's maximum electrical consumption.
• Quiet mode: reduces fan speed to minimise noise.
• Night mode: adapts operation during rest hours.
• Dehumidification: helps reduce ambient humidity.
• Fan mode: allows air to circulate in the room without activating cooling or heating.
• Weekly timer: makes it easy to set custom operating schedules.

Cooling and heating capacity of the Daikin Perfera 2x1 set

The system combines a 2.5 kW indoor unit and a 3.5 kW indoor unit, whose individual capacities add up to 6.0 kW. However, the combined nominal cooling capacity when both units operate simultaneously is 4.0 kW, determined by the capacity of the 2MXM40A9 outdoor unit.

The available capacity is distributed between the indoor units depending on which ones are operating, the thermal demand and the environmental conditions.

Cooling capacity

According to Daikin's official tables for the 2MXM40A9 outdoor unit and the 2.5 + 3.5 kW class combination, the nominal reference values are:

• Minimum cooling capacity: 1.5 kW.
• Nominal cooling capacity: 4.0 kW, approximately 13,650 BTU/h.
• Maximum cooling capacity: 4.6 kW.
• Nominal electrical consumption in cooling: 0.94 kW.
• Calculated nominal EER: approximately 4.26.

When both indoor units operate simultaneously under nominal conditions, the cooling capacity split is:

• FTXM25B 2.5 kW unit: 1.67 kW.
• FTXM35B 3.5 kW unit: 2.33 kW.

When only one indoor unit is operating, the available capacity adapts to the demand of that room within the unit's limits.

Heating capacity

The reversible heat pump allows the system to be used during the colder months, with a combined nominal heating capacity of 4.2 kW.

• Minimum heating capacity: 1.3 kW.
• Nominal heating capacity: 4.2 kW, approximately 14,330 BTU/h.
• Maximum heating capacity: 4.8 kW.
• Nominal electrical consumption in heating: 0.94 kW.
• Calculated nominal COP: approximately 4.47.

The nominal heating capacity split when both indoor units operate simultaneously is:

• FTXM25B 2.5 kW unit: 1.75 kW.
• FTXM35B 3.5 kW unit: 2.45 kW.

The capacity and consumption values come from Daikin's technical combination tables by power class for the 2MXM40A9 outdoor unit. Actual performance depends on indoor and outdoor temperatures, installation conditions and simultaneous operation.

Energy efficiency of the Daikin Perfera 2x1 air conditioner

The system uses Inverter technology to adjust compressor speed to climate control needs, avoiding unnecessary starts and stops and promoting efficient electricity consumption.

The Daikin 2MXM40A9 multisplit range offers high energy efficiency levels, with reference values of A++ class in cooling and A++ in heating for average climate, depending on the combination of indoor units.

The Daikin 2026 price list publishes the following seasonal efficiency values for a reference combination of this outdoor unit:

• Reference energy class in cooling: A++.
• Reference energy class in heating for average climate: A++.
• Reference SEER: 8.36.
• Reference SCOP in average climate: 4.60.
• Technology: Inverter with Swing compressor.
• Refrigerant: R-32.

Important: the SEER 8.36 and SCOP 4.60 values correspond to the 25 + 25 combination example published for the 2MXM40A9 outdoor unit, not to a certified label for the 25 + 35 combination in this product sheet. The final energy efficiency values for the FTXM25B + FTXM35B set must be checked in Daikin's specific documentation.

SEER and SCOP indicators express the seasonal energy performance of the system. The higher their value, the greater the amount of thermal energy supplied for each unit of electrical energy consumed under standardised calculation conditions.

Technical specifications of the Daikin FTXM25B 2.5 kW indoor unit

The Daikin Perfera FTXM25B indoor unit is a compact wall-mounted unit, suitable for air conditioning bedrooms, offices and other rooms with moderate thermal needs.

• Brand: Daikin.
• Series: Perfera.
• Reference: FTXM25B.
• Type: wall-mounted indoor unit.
• Colour: 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: 11.5 kg.
• 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.
• Connectivity: WiFi via Daikin Onecta app.
• Comfort technologies: Comfort+, two-zone motion sensor and 3D airflow.
• Air treatment: Flash Streamer, silver particle filter and titanium apatite deodorising filter.
• Additional functions: Powerful mode, Econo mode, quiet operation, fan, dehumidification and weekly timer.

Technical specifications of the Daikin FTXM35B 3.5 kW indoor unit

The Daikin Perfera FTXM35B indoor unit has a 3.5 kW cooling capacity class, making it especially suitable for living rooms, dining rooms, large bedrooms and other spaces with greater climate control needs.

• Brand: Daikin.
• Series: Perfera.
• Reference: FTXM35B.
• Type: wall-mounted indoor unit.
• Colour: 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.
• 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.
• Connectivity: WiFi via Daikin Onecta app.
• Comfort technologies: Comfort+, two-zone motion sensor and 3D airflow.
• Air treatment: Flash Streamer, silver particle filter and titanium apatite deodorising filter.
• Additional functions: Powerful mode, Econo mode, quiet operation, fan, dehumidification and weekly timer.

Technical specifications of the Daikin 2MXM40A9 outdoor unit

The Daikin 2MXM40A9 outdoor unit is a multisplit Inverter heat pump designed to connect two compatible indoor units through independent refrigerant circuits.

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

• Brand: Daikin.
• Reference: 2MXM40A9.
• Type: 2x1 multisplit outdoor unit.
• Number of connections for indoor units: 2.
• Nominal cooling capacity: 4.0 kW.
• Nominal heating capacity: 4.2 kW.
• Total maximum connectable indoor capacity class: 6.0 kW.
• Technology: Inverter.
• Compressor: hermetically sealed Swing.
• Refrigerant: R-32.
• Factory refrigerant charge: 0.88 kg.
• Global warming potential (GWP): 675.
• CO₂ equivalent of factory charge: approximately 0.60 tonnes.
• Dimensions (H × W × D): 552 × 852 × 350 mm.
• Weight: 36 kg.
• Nominal airflow in cooling: 36 m³/min.
• Nominal sound pressure in cooling: 46 dB(A).
• Nominal sound pressure in heating: 48 dB(A).
• Sound power in cooling: 60 dB(A).
• Power supply: single-phase, 220-240 V, 50 Hz.
• Reference current of the outdoor unit: 9.8 A.
• Recommended circuit breaker protection in the manual: 16 A, subject to electrical sizing and current regulations.
• Outdoor operating temperature in cooling: from -10 °C to +46 °C.
• Outdoor operating temperature in heating: from -15 °C to +18 °C, according to the manufacturer's test conditions.
• Maximum pipe length per indoor unit: 20 metres.
• Maximum total refrigerant pipe length: 30 metres.

Refrigerant connections of the Daikin Perfera 2x1

The Daikin Perfera 2x1 multisplit air conditioner has two independent refrigerant circuits connecting the FTXM25B and FTXM35B indoor units to the 2MXM40A9 outdoor unit.

Connection diameters of the indoor units

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

Connection diameters of the outdoor unit

The Daikin 2MXM40A9 outdoor unit has two refrigerant ports with the following diameters:

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

The refrigerant connections of the two indoor units match those of the outdoor unit, so no diameter reducers are required to connect this combination.

The installer must respect the correspondence between the refrigerant circuits and the wiring for each room, following Daikin's connection diagram.

Maximum pipe lengths and permitted height differences

To ensure proper system operation, the installation must respect the maximum refrigerant pipe distances and height differences established by Daikin.

• Maximum pipe length per indoor unit: 20 metres.
• Maximum total refrigerant pipe length: 30 metres, adding both runs together.
• Minimum pipe length per indoor unit: 3 metres.
• Maximum height difference between outdoor and indoor units when the outdoor unit is above: 15 metres.
• Maximum height difference between indoor units when the outdoor unit is above: 7.5 metres.
• Maximum height difference between outdoor and indoor units when the outdoor unit is below: 7.5 metres.
• Maximum height difference between indoor units when the outdoor unit is below: 15 metres.
• Total length covered by the factory refrigerant charge: 20 metres of liquid pipe.
• Additional refrigerant charge: 20 grams per additional metre when the sum of both runs exceeds 20 metres, applying the manufacturer's calculation and rounding procedure.

For example, an installation can be designed with a 10-metre refrigerant run to the FTXM25B unit and a 15-metre run to the FTXM35B unit, giving a total length of 25 metres. This layout complies with the length limits, although the height differences and other technical conditions must also be checked.

In that example, the theoretical additional charge calculation is 100 grams of R-32 refrigerant. The installer must apply the rounding procedure set out in the manual.

Insulation of refrigerant pipes

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

• 1/4" liquid pipe: minimum insulation thickness of 10 mm.
• 3/8" gas pipe: minimum insulation thickness of 13 mm.
• Material: polyethylene foam suitable for refrigeration installations, with thermal resistance of at least 120 °C.

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

What spaces is the Daikin Perfera 2x1 2.5 + 3.5 kW recommended for?

The Daikin Perfera 2x1 multisplit 2.5 + 3.5 kW is especially suitable for homes and offices that need to air condition two spaces with different thermal demands.

The 2.5 kW FTXM25B unit can be used in a bedroom, children's room or office, while the 3.5 kW FTXM35B unit is suitable for a living room, dining room or larger bedroom.

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

It is also important to note that when both indoor units operate simultaneously, the available capacity is distributed according to the total output of the 4.0 kW outdoor unit in cooling and 4.2 kW in heating.

To ensure correct sizing, it is advisable for a professional to calculate the cooling and heating needs of each room before selecting the unit.

Installation and required materials

The Daikin Perfera 2x1 set consists of an FTXM25B indoor unit, an FTXM35B indoor unit and a 2MXM40A9 outdoor unit, together with their respective remote controls and the standard accessories supplied by the manufacturer.

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

The installation must respect the maximum pipe lengths, height differences, refrigerant connections and power supply conditions established by Daikin.

Installation must be carried out by qualified professionals certified to work with climate control equipment using fluorinated gases, in compliance with current regulations and the manufacturer's official technical instructions.

With its ability to air condition two rooms, independent WiFi control, Inverter technology, quiet operation and advanced air treatment technologies, the Daikin Perfera multisplit 2x1 air conditioner FTXM25B + FTXM35B + 2MXM40A9 offers a versatile climate control solution for enjoying cooling and heating all year round.