Daikin Perfera TXM42B 4.2 kW 14000 BTU WiFi Air Conditioner

The Daikin Perfera TXM42B 4.2 kW air conditioner with WiFi is a high-efficiency 1x1 split air conditioning system that provides cooling in summer and heating in winter. With a nominal capacity of 4.2 kW in cooling, approximately 14,000 BTU/h, and 5.4 kW in heating, it combines Inverter technology, quiet operation and smart control to maintain a comfortable temperature all year round.

This set consists of a Daikin FTXM42B wall-mounted indoor unit and a Daikin RXM42A outdoor unit, connected by a refrigerant circuit using R-32 refrigerant. The Perfera range stands out for its air treatment technologies, intelligent motion sensor and even airflow distribution, offering an advanced climate control solution for homes, offices, living rooms and medium to large-sized rooms.

Thanks to its integrated WiFi connectivity, the unit can be controlled from anywhere using the Daikin Onecta app, allowing you to adjust the temperature, select operating modes and schedule climate control times directly from your mobile phone.

Composition of the Daikin Perfera TXM42B air conditioner

The set is made up of the following units:

• 1 Daikin Perfera FTXM42B indoor unit: white wall-mounted unit, with a 4.2 kW cooling capacity class, integrated WiFi, Flash Streamer technology, two-zone motion sensor and 3D airflow distribution.
• 1 Daikin RXM42A outdoor unit: Inverter heat pump with Swing compressor and R-32 refrigerant, with 4.2 kW nominal cooling output and 5.4 kW nominal heating output.
• 1 Daikin ARC466A93 wireless remote control: to manage the air conditioner functions, adjust the temperature and select the different operating modes.

This is a 1x1 monosplit system, in which one outdoor unit powers a single indoor unit. This configuration allows the full available capacity of the unit to be used to condition a room.

Advantages and functions of the Daikin Perfera air conditioner

WiFi control via Daikin Onecta

The Daikin Perfera FTXM42B features integrated WiFi connectivity and allows the air conditioner to be managed from a smartphone or tablet using the Daikin Onecta app.

Its smart control functions include:

• Turning the air conditioner on and off from anywhere with an Internet connection.
• Adjusting the operating temperature.
• Selecting cooling, heating, fan and dehumidification modes.
• Adjusting fan speed and airflow.
• Programming operating schedules.
• Controlling the main functions via compatible Amazon Alexa and Google Assistant.

This connectivity makes it easier to adapt the unit’s operation to daily routines and maintain a comfortable temperature when you get home.

Flash Streamer technology to improve air quality

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

The system is complemented by different filtration elements:

• Silver particle filter: helps capture allergens such as pollen and dust mites.
• Titanium apatite deodorising filter: helps reduce unpleasant odours.
• Air filter: traps dust particles and helps keep the air circulating through the unit clean.

These technologies promote better indoor air quality and provide greater comfort in homes and everyday living spaces.

Two-zone intelligent motion sensor

Daikin’s presence detection technology identifies the area of the room where people are located and directs the airflow to another part of the room, reducing direct drafts.

When no presence is detected, the system can automatically activate an energy-saving mode, helping to optimise electricity consumption.

Even air distribution with Comfort+ and 3D airflow

The Comfort+ system uses dual flaps to improve air distribution throughout the room. In addition, the 3D airflow combines automatic vertical and horizontal movement to promote uniform climate control.

This function allows cold or warm air to be distributed more evenly, reducing temperature differences between different areas of the room.

Quiet operation at just 21 dB(A)

The Daikin Perfera FTXM42B is designed to provide high acoustic comfort. In silent mode it reaches a minimum sound pressure of 21 dB(A), both in cooling and heating.

This low noise level makes it a suitable option for bedrooms, living rooms, offices and other spaces where discreet climate control is desired.

Powerful mode, Heat Boost and energy saving

The unit includes different functions to adapt its operation to each situation:

• Powerful mode: temporarily increases performance to quickly reach the desired temperature.
• Heat Boost: allows the heating set temperature to be reached more quickly under certain operating conditions.
• Econo mode: limits the unit’s maximum electrical consumption.
• Night mode: adapts operation during rest hours to improve comfort and reduce unnecessary consumption.
• Dehumidification mode: helps reduce ambient humidity.
• Fan mode: allows air circulation without activating cooling or heating.
• Weekly timer: makes it easy to adjust operating schedules to users’ needs.

Cooling and heating capacity

The Daikin TXM42B air conditioner offers a nominal cooling capacity of 4.2 kW, equivalent to approximately 14,330 BTU/h, commercially identified as a 14,000 BTU unit.

Thanks to its reversible heat pump, it also provides heating during the colder months, with a nominal heating capacity of 5.4 kW.

The reference performance figures for the Perfera class 42 combination with RXM42A outdoor unit are:

• Minimum cooling capacity: 1.5 kW.
• Nominal cooling capacity: 4.2 kW.
• Maximum cooling capacity: 5.2 kW.
• Minimum heating capacity: 1.5 kW.
• Nominal heating capacity: 5.4 kW.
• Maximum heating capacity: 6.2 kW.
• Nominal electrical input in cooling: 1.00 kW.
• Nominal electrical input in heating: 1.29 kW.
• Nominal EER: 4.20.
• Nominal COP: 4.19.

Inverter technology adjusts the compressor speed to the climate control demand, avoiding constant start-stop cycles and promoting stable, efficient operation.

The capacity and consumption values correspond to nominal test conditions and may vary depending on outdoor temperature, indoor conditions and installation characteristics.

Energy efficiency of the Daikin Perfera TXM42B

This air conditioner belongs to the high-efficiency Daikin Perfera range and has an A++ energy rating in cooling and A++ in heating for average climate.

The reference seasonal efficiency indicators for the class 42 set with RXM42A outdoor unit are:

• Energy class in cooling: A++.
• Energy class in heating for average climate: A++.
• Energy class in heating for warm climate: A+++.
• SEER: 8.11.
• SCOP in average climate: 5.00.
• SCOP in warm climate: 6.25.
• Reference annual consumption in cooling: 181 kWh/year.
• Reference annual consumption in heating, average climate: 1,120 kWh/year.
• Refrigerant: R-32.

Annual consumption figures are standardised estimates for energy comparison between units, not guaranteed household consumption. Actual consumption will depend on climate, hours of use and the property’s insulation conditions.

The seasonal values indicated come from the reference tables for the Perfera class 42 set with RXM42A and match those published by specialist distributors for FTXM42B + RXM42A. The energy label supplied with the specific unit must take precedence.

Technical features of the Daikin FTXM42B indoor unit

The Daikin FTXM42B indoor unit is a white wall-mounted unit that combines a compact design with high air distribution capacity and various smart climate control functions.

• Brand: Daikin.
• Series: Perfera.
• Reference: FTXM42B.
• Type: wall-mounted indoor unit.
• Colour: white.
• Cooling capacity class: 4.2 kW.
• Cooling equivalent: approximately 14,330 BTU/h.
• Dimensions (H × W × D): 298 × 804 × 252 mm.
• Weight: 11.5 kg.
• Airflow in cooling (high/medium/low/quiet): 13.3 / 9.8 / 7.2 / 5.0 m³/min.
• Airflow in heating (high/medium/low/quiet): 14.0 / 10.0 / 7.1 / 5.3 m³/min.
• Sound pressure in cooling (high/medium/low/quiet): 45 / 38 / 30 / 21 dB(A).
• Sound pressure in heating (high/medium/low/quiet): 45 / 37 / 29 / 21 dB(A).
• Sound power in cooling: 60 dB(A).
• Sound power in heating: 60 dB(A).
• Liquid refrigerant connection: 1/4" (6.4 mm).
• Gas refrigerant connection: 3/8" (9.5 mm).
• Drain connection: 16 mm.
• Wireless remote control: ARC466A93.
• Connectivity: integrated WiFi with Daikin Onecta app.
• Comfort technologies: Comfort+, two-zone motion sensor and 3D airflow.
• Filtration technologies: Flash Streamer, silver particle filter and titanium apatite deodorising filter.
• Additional functions: Heat Boost, Powerful, Econo, silent mode, dehumidification and weekly timer.

Technical features of the Daikin RXM42A outdoor unit

The Daikin RXM42A outdoor unit is an air-to-air heat pump with Inverter technology and R-32 refrigerant, designed to provide cooling and heating with efficient operation.

Its hermetically sealed Swing compressor adapts operation to thermal demand, helping to maintain a stable temperature and reduce electricity consumption.

• Brand: Daikin.
• Reference: RXM42A.
• Type: monosplit outdoor unit with heat pump.
• Nominal cooling capacity: 4.2 kW.
• Nominal heating capacity: 5.4 kW.
• Technology: Inverter.
• Compressor: hermetically sealed Swing.
• Refrigerant: R-32.
• Factory refrigerant charge: 0.95 kg.
• Global warming potential (GWP): 675.
• CO₂ equivalent of the factory charge: approximately 0.64 tonnes.
• Dimensions (H × W × D): 610 × 923 × 367 mm.
• Weight: 40 kg.
• Nominal sound pressure in cooling: 48 dB(A).
• Nominal sound pressure in heating: 49 dB(A).
• Liquid refrigerant connection: 1/4" (6.4 mm).
• Gas refrigerant connection: 3/8" (9.5 mm).
• Power supply: single-phase, 220-240 V, 50 Hz.
• Outdoor temperature range in cooling: from -10 °C to +50 °C.
• Outdoor temperature range in heating: from -21 °C to +18 °C, according to the wet-bulb conditions indicated by the manufacturer.

Refrigerant connections and maximum pipe lengths

To correctly install the Daikin Perfera TXM42B air conditioner, the refrigerant connection diameters and the maximum distances allowed between the indoor and outdoor units must be respected.

Refrigerant connection diameters

• Liquid pipe: 1/4" (6.4 mm).
• Gas pipe: 3/8" (9.5 mm).
• Condensate drain connection of the indoor unit: 16 mm.

Both units have refrigerant connections of the same diameter, so they can be connected using copper pipes suitable for R-32 refrigerant, without the need for reducers.

Maximum pipe length and height difference

According to the installation manual for the RXM42A outdoor unit, the following limits must be respected:

• Maximum refrigerant pipe length: 30 metres.
• Minimum refrigerant pipe length: 1.5 metres.
• Maximum height difference between units: 20 metres.
• Length covered by the factory refrigerant charge: up to 10 metres.
• Additional refrigerant charge: 20 grams per metre when the pipe length exceeds 10 metres.

For example, in an installation with 15 metres of refrigerant piping, the technician must calculate an additional charge of 100 grams of R-32, following Daikin’s official instructions.

The manufacturer also sets requirements regarding pipe insulation, leak testing and vacuuming of the refrigerant circuit. These tasks must be carried out by qualified professionals.

What spaces is the 4.2 kW Daikin Perfera recommended for?

Thanks to its nominal cooling capacity of 4.2 kW, the Daikin Perfera TXM42B air conditioner is a suitable option for cooling living rooms, dining rooms, offices, large bedrooms and other spaces with medium or high thermal needs.

As a commercial guideline, it may be suitable for spaces of approximately 35 to 45 m², although the actual area it can condition will depend on insulation, orientation, ceiling height, windows, occupancy and climate conditions.

To ensure correct sizing, especially in spaces with large glazed areas or high thermal loads, it is advisable for an installer to perform a cooling and heating load calculation.

Installation and required materials

The Daikin Perfera TXM42B set consists of an FTXM42B indoor unit and an RXM42A outdoor unit, together with the wireless remote control 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 installation, copper refrigerant piping, insulation, electrical and interconnection wiring, drain pipe, trunking, brackets and fixing elements will be required.

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

With its combination of high efficiency, WiFi control, quiet operation, air purification technology and Inverter heat pump, the Daikin Perfera TXM42B 4.2 kW and 14,000 BTU air conditioner is a complete climate control solution for enjoying a comfortable temperature and better air quality all year round.