How to choose an air conditioner for an apartment and a house

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Air conditioning in hot summer, especially in a city full of exhaust gases and dust, is no longer a luxury, but a necessity. But how do you choose the best one for your situation? We will talk about how different designs differ, how to choose the right cooling capacity for the area of ​​the room, as well as about leading manufacturers and prices on the market..

How to choose an air conditioner for an apartment and a house

The choice of an air conditioner for a house or apartment is to determine the functions that climate systems in your house should perform, the required “refrigeration” capacity and the optimal ratio of the cost of units, the reliability of their design and the amount of comfort that they can provide.

Functionality of air conditioners

The main function of climatic household systems is to cool the living space. Other modes of operation expand their capabilities.

So, the main tasks of climate systems are:

  • cooling;
  • heating;
  • drainage;
  • moisturizing;
  • ventilation.

How to choose an air conditioner for an apartment and a house

Heating, as a heating mode, cannot be the main one. It is more commonly used in cool weather before or after the heating season. A dehumidification regime is desirable in humid climates to improve heat tolerance for most people. Humidification is necessary in a dry climate, because the air conditioner, even without a dehumidification mode, partially performs this function. And excessively dry air is harmful to the human respiratory system. Some models, unlike most, allow you to organize the flow of fresh outside air.

Additional operating modes of the air conditioner can be:

  • sleeping mode;
  • air ionization;
  • comfort mode;
  • air cleaning;
  • 3D air flow;
  • timer;
  • self-diagnosis.

How to choose an air conditioner for an apartment and a house

Sleep mode reduces power consumption and compressor noise by reducing fan speed. Comfort mode is an uncommon feature in which the mode control system decides on the optimum temperature. Air purification in various models can be implemented using coarse or fine filters, as well as special purifiers (electrostatics, absorption, etc.).

The 3D airflow function in some models means the ability to adjust the flow not only up / down, as in most cases, but also left / right. Sometimes the direction of the cool air is set by the control panel – the flow will be directed towards it. The purpose of the timer is to set the start and stop of the climate system. It’s nice to come home and immediately feel the desired coolness. Self-diagnosis is a preventive function that determines, if necessary, the cause of a malfunction.

Calculation of the cooling capacity of the climate system

To select the correct air conditioner, you need to calculate its cooling capacity. For a house and an apartment, the calculation can be carried out according to a simplified scheme – depending on the area of ​​the room. More detailed calculations take into account additional heat transfer parameters..

How to choose an air conditioner for an apartment and a house

Simplified calculation of the cooling capacity of an air conditioner

Climate systems are almost always labeled with numbers that indicate its cooling capacity in thousands of British thermal units (BTU). With simplified calculations, it can be assumed that 1 kW of cooling capacity is sufficient for 25-30 m3 or 10 m2 premises. A simplified calculation for household systems is shown in table 1.

Table 1

Optimal area, m2 power, kWt Capacity, thousand BTU / h Common name
up to 15 1.6 five five
up to 20 2.0 7 seven
up to 25 2.6 nine nine
up to 35 3.5 12
up to 50 5.2 18

Detailed calculation of the cooling capacity of the air conditioner

A more detailed calculation includes many factors:

  • the number of people in the room;
  • the height of the ceilings;
  • sunny or shaded exterior wall;
  • dimensions of openings and glazing area;
  • heat release from household appliances, lighting devices;
  • number of storeys, etc..

How to choose an air conditioner for an apartment and a house

For a residential building or apartment, you can use the following algorithm:

  1. To take into account the height of the ceilings, a ratio of 1 kW per 25-30 m is used3, where the volume of the room is the multiplication of the area by the height.
  2. Each person contributes 100-130 W.
  3. The power of household appliances, electronics, light bulbs – according to the passport, taking into account the heat release coefficient – 0.3.
  4. Radiation through the windows comes from 200-300 W on the sunny side, up to 50-100 W in the shade.
  5. If you want to have a guaranteed 18 ° C in the heat, you can increase the received power by 15%.

The calculation of the capacity of the air conditioner for a hypothetical case is given in table 2.

table 2

Parameter Cooling capacity, kW
Power related to the volume of a room with an area of ​​15 m2 and a height of 2.5 m 1.25-1.50
Heat dissipation from 3 people 0.3-0.39
Heat dissipation from electrical appliances ~ 0.65
Heat penetrating through windows 0.12-0.20
Total 2.32-2.74

Air conditioner efficiency factor

The efficiency factor (EF) is an important indicator that reflects the ratio of the cooling capacity to the electrical capacity in the meter. The higher the EC, the less you have to pay for cooling the room. Values ​​from 3.0 are a good indicator. In this case, for every 3 kW of cooling power, 1 kWh of electrical energy is consumed.

How to choose an air conditioner for an apartment and a house

Constructive and installation types of air conditioners

The classification of domestic air conditioners is based on their design, installation method and control principles. According to the modular design, air conditioners are divided into monoblock and two-block – split systems. At the place of installation and structurally monoblock are subdivided into window and floor (or mobile) systems, and split systems into wall, ceiling, cassette and duct systems. Depending on the control principle, a distinction is made between inverter and linear air conditioners..

Monoblock conditioners

Devices in which all units are concentrated in one housing are called monoblock. Most often they are installed in offices or industrial premises, but they are also successfully used in apartments and private houses..

Window air conditioners

Such units are built into the window opening. Everything is quite simple if the frame is wooden, without a glass unit. When installing in a double-glazed window, it will be necessary to replace one sash with a sandwich panel or another sash with an insert from a sandwich panel. Window air conditioners, as a rule, belong to the budget segment and do not have advanced functions. Some models, in addition to cooling air, supply a limited amount of it from the street, ventilating the room. Design flaw – a sufficiently high noise level.

How to choose an air conditioner for an apartment and a house Window air conditioner

Floor air conditioners

A device of this type is installed on the floor near the window, and the corrugated air duct is brought out of the room in one of the following ways:

  • fits between the ajar sashes of the window;
  • cuts into glass with sealing joints;
  • cuts into a sandwich panel insert.

How to choose an air conditioner for an apartment and a house Installation of a floor-standing air conditioner with an insert in the window

The portable air conditioner is convenient for its mobility. You can move it between rooms, or you can, leaving a city apartment for a dacha, take it to a country house and easily connect there. Such units are compact enough, aesthetic and can have a variety of functional capabilities..

Among the disadvantages, one can single out increased noise, power limitations, low CE and a rather high cost..

Split systems

Two blocks of the system, interconnected by a refrigerant line, can have different designs and installation locations.

Wall mounted air conditioners

The most popular type of split systems. The unit with the evaporator is mounted on the wall, and the second, compressor unit, is mounted on the outside of the building. The split system can have all the basic and additional functions, except for ventilation. It is a quiet operating device with high CE (especially inverter models). Another important advantage is the beautiful design of the apartment block..

How to choose an air conditioner for an apartment and a house Installation of a wall split system

Rather high requirements for the installation of the installation and the extension of guarantees to the equipment only when these works are performed by a professional organization, makes self-installation undesirable.

How to choose an air conditioner for an apartment and a house

Floor and ceiling systems

Floor-to-ceiling air conditioners are versatile systems mounted in large enough rooms, but with ceilings not higher than 3 m. Their indoor unit can be mounted on horizontal (only on a rigid frame) and vertical surfaces. One of the main advantages of the design: a pleasant microclimate in the room. Air moves along the mounting surface, washing it.

How to choose an air conditioner for an apartment and a house Ceiling air conditioner

Cassette and duct air conditioners

Both split systems are united by the installation site – a suspended (wired) ceiling. Both of these devices are semi-industrial and can be used as household devices for large rooms..

Cassette systems supply cooled air through the lower front panel of the evaporator unit. At the same time, air flows are directed in all four directions, which makes the conditioning process even and soft. When assembled, the evaporative unit of the air conditioner looks like a cassette inserted into the ceiling.

How to choose an air conditioner for an apartment and a house Concealed installation of cassette air conditioner

Ducted split systems direct the outgoing stream of cool air through the side panel of the indoor unit, so that they can be built not only on a flat ceiling, but also in decorative “steps” of the ceiling structure. Such air conditioners can cool two or more rooms in a house through diluted air ducts. The great advantage of the ducted split system is the possibility of introducing portions of outside air.

How to choose an air conditioner for an apartment and a house Concealed duct system installation

Inverter or linear air conditioners

Inverter air conditioners differ from simple (linear, start-stop) structurally and control systems. In conventional systems, switching off and on (start and stop) occurs periodically, while the temperature curve in the room looks like a zigzag (broken line), and the air conditioner always works at full capacity when switched on. In inverter regulation is smooth and continuous.

How to choose an air conditioner for an apartment and a house Comparison of temperature conditions with inverter and inverterless control

The name “inverter” means the principle of operation of the electrical system of the equipment – constant transformation of alternating current into direct current and vice versa, while cooling capacity and consumed electricity are constantly changing.

Inverter units have a board – an electronic control system, which, as a rule, is enriched with “smart” functions:

  • accounting for weather conditions;
  • sensors for determining the position of a person or a remote control in the room;
  • self-diagnosis;
  • protection against voltage changes in the network (highly desirable for delicate electronics of these systems).

How to choose an air conditioner for an apartment and a house

The advantages of inverter split systems:

  1. Does not give too cold streams, more gentle to health.
  2. Quickly reaches temperature and maintains it more accurately.
  3. Low noise.
  4. Higher energy efficiency – in cooling mode up to 60%, in heating mode up to 45%.
  5. Due to the smooth operation, there are no starting currents affecting the power grid and there is less wear of elements.

How to choose an air conditioner for an apartment and a house

The disadvantage of inverters is the higher cost of equipment and its repair in case of failure of the control board.

Choosing an air conditioner by manufacturer and cost

Mitsubishi, Daikin, Toshiba and General are considered to be the best HVAC equipment manufacturers. They have the highest efficiency ratios, reliability levels, and functionality. But this quality is followed by a fair, as a rule, not a budget price. Panasonic, Hyundai and Haier are leading in the category “good quality for an affordable price”. When choosing an air conditioner, you should also take into account all the functionality inherent in various models.

How to choose an air conditioner for an apartment and a house

For a preliminary assessment, we made a selection of proposals that were relevant for April 2016 and tabulated them. For a correct comparison, only systems were taken with a capacity not exceeding 4 kW.

Table 3. Air conditioners with a capacity of 2–4 kW, room area 12–35 m2

Manufacturer Model A type Energy efficiency coefficient Cooling capacity, kW Heating power, kW Area, m2 Inverter Price, rub. Installation cost, rub. * Warranty, year
Hyundai standard HSH-S071NBE wall 3.21 2.2 2.38 20 not 15900 7500 3
GENERAL CLIMATE GCW-05CMN1 window 2.1 12 not 16500 7500 3
Haier Home HSU-07HEK203 / R2 wall 2.1 2.25 20 not 17200 7500 3
BALLU BSW-09 HN1 wall 3.61 2.7 2.8 27 not 17300 7500 3
DANTEX RK-07SDM3 / RK-07SDM3E wall 3.61 2.2 2,3 21 not 18100 7500 2
ELECTROLUX EACS-07HN / N3 wall 2.2 2.39 20 not 18400 7500 3
MIDEA MS11D-09HRN1 / MO11D-09HN1 wall 3.01 2.64 2.64 24 not 20,000 7500 3
GENERAL CLIMATE GCW-07CRN1 window 2.1 sixteen not 20100 7500 3
PANASONIC CS-YW7MKD / CU-YW7MKD wall 3.5 2.1 2.1 21 not 22500 7500 3
BALLU BSWI-09HN1 wall 3.61 2.7 2.8 27 Yes 22800 7500 3
Lg G07AHT wall 3.42 2.17 2,3 15 not 24800 7500 2
Haier Lightera DC Inverter HSU-12HNF03 / R2 (DB) wall 3.5 3.85 35 Yes 26600 7500 3
TOSHIBA RAS-07SKP-ES / RAS-07SA-ES wall 3.35 2.08 0.62 20 not 28300 7500 3
MITSUBISHI HEAVY SRK20HG-S / SRC20HG-S wall 3.64 2.07 2.22 20 not 30500 7500 3
KENTATSU KSGM26HZAN1 / KSRM26HZAN1 wall 3.62 2.64 2.93 25 Yes 32800 7500 3
DAIKIN FTYN25L / RYN25L wall 3.61 2.65 2.8 25 not 34000 7500 3
HITACHI RAS-10AH1 / RAC-10AH1 wall 3.63 2.65 2.9 26 not 34200 7500 3
FUJITSU ASYG07LLCA / AOYG07LLC wall 4.29 2.1 2.7 20 Yes 35100 7500 4
DAIKIN FFQN25CXV / RYN25CXV cassette 3.35 2.8 2.8 25 not 54700 8500 3
Gree GPCN12A2NK3CA mobile 2.14 3.0 thirty not 62000 2
MITSUBISHI ELECTRIC SEZ-KD25VAQ / SUZ-KA25VA channel 3.61 2.5 3.0 25 Yes 99800 7500 3
DAIKIN FLXS25B / RXS25K floor-ceiling 3.63 2.5 3.4 25 Yes 103200 7500 3
MITSUBISHI ELECTRIC SLZ-KA25VAL / SUZ-KA25VA3 cassette 3.00 2.5 3.0 25 Yes 106500 7500 3
FUJITSU AGYG12LVCB / AOYG12LVCN floor 4.4 3.0 4.0 35 Yes 167400 8500 4
DAIKIN FTXZ25N / RXZ25N wall 5.9 2.5 3.6 25 Yes 183000 7500 3

* standard installation, online store offer

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