Mitsubishi Electric MSZ-DM25VA split system overview: on the road to excellence

Tired of sweating in your apartment or office in the summer or freezing in the off-season instead of enjoying a comfortable climate? So it's time to get air conditioning. But, how not to get confused in the variety of offers from various brands?

We advise you to pay attention to such a stylish unit as a split system Mitsubishi Electric MSZ DM25VA - a product of a renowned Japanese manufacturer, which is the standard of manufacturability and quality.

We prepared a detailed overview of the technical parameters and functionality of the unit, as well as provided real user reviews, highlighted the pros and cons of the air conditioner. Comparison with the nearest competitors will help determine the choice of the optimal model of a split system.

The main parameters of the split system

The reviewed model belongs to a series of classic inverter air conditioners from this corporation. Refers to budget wall-type splits. This series is assembled at production facilities in Thailand, and this is a guarantee of quality.

Design features of the device

The device has the most necessary, no-frills, functionality and has successfully established itself as an efficient operation in a wide temperature range. The air conditioner copes well with maintaining a comfortable climate on an area of ​​25 m², which is quite acceptable for a 1-2-room apartment.

As a standard, this split system is equipped with an internal module and an external unit.

The indoor wall unit is made of high-quality bright white glossy plastic, has a strict design, looks stylish and concise in any room

Design feature indoor unit is a metal mesh protection of vertical blinds. This makes the model safer to operate, eliminating any contact with a rotating impeller.

The device implements the ability to easily remove the front panel with a touch of the clamps, which is very convenient when servicing the air conditioner.

A distinctive feature of the outdoor module is the material from which it is made. This is a sheet steel with a special anti-corrosion coating.

Functionality of technology

The power supply for the compressor of the split system is made according to an inverter circuit, ensuring its continuous operation with constant power.

Application of this technology achieves:

• 30–50% increase in the service life due to optimal operation;
• reducing the time required to achieve specified climate indicators;
• the ability to work in a wider surrounding spectrum;
• significant, up to 30% reduction electricity consumption, in comparison with conventional models.

Inverter circuit. Using this technology takes the energy efficiency coefficient of the product to a rather high level: in cooling mode EER = 2500 W / 710 W = 3.5; in heating mode COP = 3150 W / 750 W = 4.2. These indicators correspond to class A + energy efficiency.

Another significant feature of the device, implemented mainly due to inverter technology, is very quiet operation, which makes air conditioning a leader in this indicator in the business segment of HVAC equipment.

Almost inaudible work comparable to a whisper of a person makes it possible to install this unit in bedrooms and children's rooms

It should be noted that in terms of noise level (22 dB), the device corresponds to the premium segment of air conditioners.

EconoCool. The mode helps reduce energy costs. Mitsubishi Electric Corporation was the developer of this unique feature.

This mode is realized due to the operation of the blinds according to the “smart” algorithm - in the vertical swing regulation, which allows the user to not notice slight warming in the room - by 2 ° С.

As studies conducted by company experts have shown, it is precisely such an insignificant increase in air temperature that saves energy by almost 20%. This function is especially effective for long-term operation of the air conditioner.

The device provides high-quality air filtration, putting a barrier to dust and other micro-impurities unsafe for health in the room air. Structurally, the instrument filter consists of two sections.

The air stream is cleaned using two included bactericidal filter inserts with silver ions, which can reduce the concentration of not only dust, but bacteria and allergens

Some savings come from the reusable filter. For this, it is only necessary sometimes to wash it in warm water. But it is important to remember that the manufacturer guarantees the effective operation of the filter element only if it is replaced annually.

Repeat autostart. Another functional feature of the monitored model is that when a power failure occurs, the device returns to operation after restoring the power supply to the previously specified settings.

For information, this option is configured in the device by default, and to disable it, you need to change the settings of the air conditioner. But this should already be done by service specialists.

The split system uses a unique engine manufacturing technology. The fans of both modules are driven by non-contact DC motors, which makes them particularly highly efficient.

The rotor of the non-contact motor of the device is equipped with an external permanent magnet.This technology allows you to increase the torque of the engines at low speeds, which reduces the rotational speeds of the fans and reduces the noise from them

Poki Poki Core. The engine design technique developed by the corporation in which the stator winding with a special pole structure is laid on the core in the unfolded state, which significantly increases the efficiency and efficiency of the engine.

For the manufacture of heat exchangers, tubes with finned internal knurling are used. This technology allows you to increase the heat transfer rate, which in turn, again, increases energy efficiency.

Full horizontal shutter closure after turning off the device - an interesting feature of the model. All air distribution elements and air supply openings are hidden when the air conditioner is inoperative.

This function not only gives the “passive" product a nice and accurate look on the wall, but also reduces the likelihood of dust getting on the internal components.

The nuances of the equipment

Remote control of the device is carried out from the remote control. The batteries last for almost a year of work. The remote will let you know about the critically low charge level by turning on the indicator. To replace the batteries with new ones, the device, after signaling, will provide another week, and only then will stop working.

The control panel looks a bit rustic in appearance, but, nevertheless, the convenient use of the device is quite ensured by the existing classic set of buttons

For the correct operation of the air conditioner, it is recommended that when replacing the batteries, reset to factory settings. This is done by gently pressing a pointed object (a paper clip is suitable) on the RESET button on the remote control.

In the air conditioner, it is possible to use the function of the set time for switching on and off the device in the 12-hour range. The resolution of setting the timer is 1 hour.

If there is no need to use the air conditioner for more than a week, it is recommended to dry its internal components. This is done in order to eliminate the favorable conditions of a humid environment for harmful trace elements.

In the absence or malfunction of the remote control, you can start the emergency operation of the air conditioner by controlling directly from the indoor unit. To do this, use the E.O.SW button, pressing which alternately switches the emergency cooling and heating options.

For half an hour, after turning on one of the modes, the temperature is not regulated, and the fan runs at high speeds.

The operation of the device in this mode is also used for a test run of the product after its installation and purging procedures and checking the tightness of the system.

To dry the indoor unit, it is necessary to manually set the highest temperature in COOL mode and leave the appliance for 4 hours

Undoubted advantages and individual disadvantages

A brief review of the model makes it possible to weigh its positive qualities and shortcomings.

The deserved strengths of the model include:

• good productivity and energy saving;
• almost inaudible work of the internal block;
• simplicity in management;
• sufficient inter-unit communication distance - 20 m.

A big plus is the price, which is quite adequate for a high-quality branded product - within the budget segment.

Another positive indicator is the manufacturer’s confidence in the quality of their products, which is confirmed by a 3-year free warranty on the split system purchased from an authorized dealer

Additionally, the manufacturer offers a unique extended warranty for a period of 5 years, upon signing a service contract.

Some of the inherent disadvantages of the air conditioner include:

• lack of backlight and small screen size of the remote control;
• more complex than other air conditioners, even from the same manufacturer, the procedure for disassembling the indoor unit for split service.

As a conclusion on the pros and cons of the model, it should be noted that if the consumer does not have special requirements for the advanced functions and design of the air conditioner, then these shortcomings cannot have a significant impact on the decision to choose this particular device.

Product Reviews

Many of the advantages and disadvantages of the model listed above find their place in customer reviews. But the main thing in the reviews is that the relatively new (since 2016) model MSZ-DM25VA in the market of HVAC equipment was a real discovery for most users.

Here are some of the positive feedback:

• simplicity and rigor of the design of the indoor unit;
• ergonomic and uncomplicated remote control;
• noticeable is the manufacturer’s efforts to make a model, as they say, for people, and as confirmation of this, it would seem like a trifle, like the package with a ribbon included in the kit for tying the insulation of the indoor unit.

This indicates that even in the smallest details, the quality of the brand model is felt.

Advanced users, as a plus, note the presence in the control board of the device of the technical ability to connect the Wi-Fi module to the device for remote operation via a mobile application

For fairness, it should be noted and there is a negative feedback on the quality of the device. So, the user complains that during the warranty period the marriage manifested itself in the form of extraneous noise, presumably due to poor alignment of the fan shaft.

And, in the continuation of one trouble, the other is the red tape of the seller and the service department with the fulfillment of warranty obligations.

Comparison with competitor models

Everything is known in comparison, therefore, a brief overview of models from other manufacturers is offered below, but all of them are representatives of inverter-type units with the same approximately service area (25-30 m²) and from one price segment.

Model No. 1 - Daikin FTXB25C / RXB25C

This device is also from a Japanese manufacturer, with a European assembly in the Czech Republic. The functionality of the model is characterized by a set of the most basic options. It should also be noted a decent balance of the cost of the product and its quality.

Key technical indicators:

• performance cooling / heating - 2500/2800 W;
• power consumption during cooling / heating - 770/690 W;
• energy efficiency ratio in cooling / heating mode - 3.2 / 4.1 (class A);
• noise indicator internal module - 21 dB;
• length of communications - 15 m;
• temperature range in cooling mode - from -10 ° С to + 46 ° С.

The disadvantages include a non-illuminated control panel, a limited 15 m communication length between the indoor and outdoor units, as well as the need to connect the power supply of the indoor unit to the outdoor unit, and this is an extra hole in the wall.

A distinctive feature of the device is the very small noise declared by the manufacturer, and really noted by customers - 21 dB, so the product will be an ideal option for use in bedrooms.

Model No. 2 - Toshiba RAS-10N3KVR-E / RAS-10N3AVR-E

This is another model of a famous Japanese brand and is being collected, like the hero of our review, in Thailand. The device has a classic appearance of the indoor unit.

Key technical indicators:

• performance cooling / heating - 2500/3200 W;
• power consumption during cooling / heating - 600/750 W;
• energy efficiency ratio in cooling / heating mode - 4.1 / 4.3 (class A);
• noise indicator internal module - 26 dB;
• length of communications - 20 m;
• temperature range in cooling mode - from -10 ° С to + 46 ° С.

With the energy efficiency class A declared by the manufacturer, the coefficient of this indicator is slightly higher than that of the other samples presented. The same can be said about the noise level: a value of 26 dB is a very good indicator, but higher than that of competitors.

The model is equipped with innovative filters - plasma and deodorizing, there is an anion generator.For this reason, this device can be safely used by people with respiratory problems.

Model No. 3 - Hisense AS-10UR4SVPSC5

This model is declared by the Chinese manufacturer as a representative of the premium series. But in terms of basic parameters, the device does not differ much from the previously described products.

Key technical indicators:

• performance cooling / heating - 2800/2800 W;
• power consumption during cooling / heating - 800/740 W;
• energy efficiency ratio in cooling / heating mode - 3.5 / 3.7 (class A);
• noise indicator internal module - 22 dB;
• length of communications - 15 m;
• temperature range in cooling mode - from -15 ° С to + 43 ° С.

The model is based on DC-inverter super technology, thanks to which, among other advantages of the inverter, the manufacturer guarantees that the temperature in the room is maintained with unique accuracy - less than 1 ° C and maximum energy saving.

Savings compared to conventional air conditioners are up to 40%, and standby power consumption is less than 1 W.

The uniqueness of the model lies in the ultra-thin case of the internal module, with a depth of only 11.3 cm. The two-layer plastic of the front panel, with a transparent top layer, gives the device volume and airiness.

The customer dissatisfaction, according to the responses, boils down to such moments as a somewhat noisy operation of the external unit, fast power consumption of the remote control batteries.

Conclusions and the best deals on the market

All models subject to review deserve attention. Each of them has its advantages and, of course, disadvantages, and user ratings are often subjective.

But, if there is no addiction to a particular brand, then the MSZ DM25VA reference air conditioner against the background of its three competitors looks preferable, first of all, due to innovativeness and quality.

Have experience using the Mitsubishi Electric MSZ DM25VA air conditioner or any model from the competitors list? Please share with your readers your impressions of the climate technology. Leave feedback, comments and ask questions - the contact form is below.