Does the air conditioner operate in subzero temperatures? Air conditioner operation in winter

Probably everyone remembers the unprecedentedly high demand for air conditioners last summer. Moreover, they snapped up both household air conditioners and systems intended for enterprises. But winter has already come, which means that the air conditioner can be put on the hook at least until spring. But no matter how it is! There is also work for the air conditioner in the cold season. The main thing here is to know how to use this equipment correctly in winter, so that it does not deteriorate by summer. About all the intricacies winter work air conditioners the site told the reporter Alexey Zaitsev, CTO of MDV-Russia.

- It is not recommended to turn on the air conditioner, at least for household ones, if the temperature outside the window has dropped below minus 10 degrees. What happens if you violate this prescription, and is it really necessary to strictly comply with this requirement?

- The recommendations not to turn on the air conditioner at low temperatures are based on the operating temperature range of the equipment specified by the manufacturer. The manufacturer is obliged to indicate the service life of the equipment, and in many countries this parameter is established by law. That is, it cannot be less than a certain period. Since all air conditioners in Russia are imported, these terms apply to them.

If you do not comply with the specified temperature regime, this will not only lead to a reduction in the service life of the air conditioner, but may also lead to its breakdown. Therefore, the rules for operating the air conditioner are mandatory. It should also be remembered that all technical characteristics are declared by manufacturers only within the specified operating temperature range.

- Still, you can turn on the air conditioner in the cold season ...

- Observing a whole range of restrictions. First of all, it is necessary to determine which of the operating modes of the air conditioner we are talking about: cooling or heating. Almost all modern air conditioners can operate normally in heating mode at negative temperatures. However, you should not expect the manufacturer's declared energy efficiency from the air conditioner in such conditions. Under certain conditions it may happen that it is easier to turn on the electric heater.

It should be remembered that due to design features it is easier to work at negative temperatures in an inverter-type air conditioner than a standard one. For example, mini VRF-systems MDV guarantee heating operation when the outdoor temperature drops to -15 degrees Celsius. Wall split systems MDVs guarantee heating operation at outdoor temperatures up to -7 degrees Celsius. Cooling mode for a conventional air conditioner at outdoor temperatures below plus 10-17 degrees is an extreme mode of operation that leads to breakdown.

For clarity, I will give a few examples of why low temperatures can be critical for air conditioners. Firstly, the main part of air conditioners is household appliances, which were not designed for such work during the design. Secondly, is cooling so often necessary if the outside temperature drops below plus 10-17 degrees? Usually, the need to turn on the air conditioner at such moments arises, for example, in the off-season, when the central heating has not yet been turned off. The main problems in this case are associated with a decrease in condensation pressure, with oil boiling when starting the air conditioning compressor. At temperatures near or below zero, condensation freezes, usually discharged outside. This does not lead to a breakdown of the air conditioner, but it does not lead to repairs in the room.

- What to do if, even at subzero temperatures outside the window, the operation of the air conditioner is fundamentally necessary?

- In this case, it is necessary to use equipment specially adapted for such conditions. For example, mini VRF-systems MDV guarantee cooling operation when the outdoor temperature drops to minus 5 degrees Celsius. If you need a separate split system, you need to install a special winter kit. It usually includes a condensing pressure regulator, a compressor crankcase heater and a drain heater. To avoid loss of warranty, this kit should only be installed by an Authorized Service Center. Installers can only be relied on if they represent the equipment supplier, but this is not so common.

- What does such a kit give?

- When installing this kit, it is possible to achieve stable operation of the air conditioner for cooling down to -15C. With a further decrease in temperature, it will have an effect wind load, i.e. in calm weather or good location outdoor unit in a place protected from the wind, it is possible to work up to -20C. Expansion of the operating temperature range downward when working for cooling is also possible, but it seems impractical due to high cost these decisions.

- How important is it to use air conditioners in winter?

- Usually in the cold season, air conditioners are used for heating, mainly in the off-season. However, for the private market, this issue is not as relevant as for corporate clients. For various industrial enterprises the operation of the air conditioner for cooling at low temperatures is a rather important issue.

- Given that most users do not turn on the air conditioner in winter, is it necessary to carry out any special measures to preserve this equipment?

- Preservation of the air conditioner for winter period is optional. It is much more important to carry out preventive maintenance of the air conditioner before the start of the new summer season. So, in the indoor unit, you need to clean the permanent filters, and, if necessary, replace the replaceable ones, which you can do yourself. Using the services service center, it makes sense to clean and disinfect the heat exchanger of the indoor unit, clean the heat exchanger of the outdoor units, flush drainage system, check the tightness of the refrigeration circuit and, if necessary, eliminate leaks and top up the air conditioner. These works must be carried out every year. If your outdoor unit is located in the area of distribution of poplar fluff, the heat exchanger must be cleaned when dirt appears. These measures will allow the air conditioner to operate for the life stated by the manufacturer and save energy costs.

The exclusive distributor of MDV on the territory of the Russian Federation and in the CIS countries is the AYAK Group of Companies. Official site of the company

Modern split systems and mobile units are capable of not only cooling the air, but also heating it. It is important to understand: is it possible to use the air conditioner for heating in winter or the equipment is not designed to work in thermal regime at low temperatures ah on the street.

Features and principle of operation of the split system for heat

Any split system is not a heating device, there is no a heating element, therefore, for quality maintenance comfortable temperature climate control systems will be small. This is due to the peculiarities of the principles of its functioning. only at certain values of the thermometer outside.

Most splits can issue warm air... In general terms, this process can be called the reverse of freon, in which the compressor is responsible for pumping it towards the room: heat is taken from the outside and carried inside. Changing the refrigerant stroke requires a four-way valve that swaps the evaporator and condenser positions. Freon condensation occurs in the indoor unit with the release of heat, and in the external unit, evaporation occurs, during which the air conditioner absorbs heat. Heat is pumped from one place to another, but not generated. Because of this, in heating mode, the efficiency of the air conditioner is greatly reduced, which makes its operation ineffective when outside temperature closer to zero marks.

Heat exchanger external block becomes infinitely small: at thermometer values closer to zero and below its area is not enough to remove the cold.

Outside Temperature Range Limitations

The majority of air conditioners with a heating function have certain limitations: manufacturers produce climatic equipment with a programmed ability to work on heat at a minimum outside temperature of up to -5 ° C. In practice, it has been proven: with minus indicators, the split system should not be started. It can be concluded that it is impossible to use an air conditioner for heating in winter. In the best case, it will be possible to warm up in this way until November.

Failure to comply with the recommendations given in the instructions and during installation leads to wear and tear in a constant start-stop mode. Modern two-component devices have special program, at which a signal is given from the temperature sensor to the board about unacceptable temperature values of the heat exchanger, and the device is blocked from turning on. In extreme cases, only the fan will work, or one of the error codes will be displayed - each brand has its own codes.

How to turn on and adjust the air conditioner for warm air

If the outdoor temperature is correct, turn on the air conditioner using the ON button on the remote control or on the external panel.

Find the HEAT button, or MODE and then the icon with the image of the sun, drop, snow or fan. If there is nothing like this, then this model of the air conditioner is not intended for heating the room.

After switching the system to thermal mode, use the “+” and “-” buttons to set desired temperature... It should be higher than the room temperature.

After setting the desired temperature, the fan will turn on, and then warm air will begin to flow. The preset climate will be established within 10 minutes.

There are models in which you first need to set the mode and temperature, and then press the ON button. detailed instructions attached to the device upon purchase.

Operational problems and risks

If you turn on the air conditioner for heating when the outside temperature is below the permissible level, the following problems may occur:

the efficiency of the system will decrease significantly;
the condenser of the outdoor unit will freeze;
the fan of the outdoor unit will break;
the oil will thicken, causing the compressor to break during system start-up.

Efficiency and thermal efficiency of air conditioners

The efficiency of an air conditioner is understood as an assessment of the efficiency of the system. The calculation of this value is made from the ratio of consumed and useful power. In this case, the useful power is the amount of reduced heat per unit of time. We can talk about efficient operation when the efficiency of the air conditioner in heating mode is more than 1.

Usually, at positive temperatures outside, the amount of heat generated exceeds the amount of consumed energy by 2-4 times. If the power consumption is 1 kW, then the heating power will be approximately 2-4 kW. The manufacturer indicates the rated power consumption, which may slightly differ from the real values.

The energy efficiency ratio of an air conditioner is usually labeled C.O.P. (Coefficient of Performance). It can be calculated by correlating two values - heating power to consumption power.

If thermal power was 3.5 kW, and the consumption is 1.2 kW, then the efficiency will be approximately 2.9 kW. This is considered to be quite high performance. If the outside temperature drops, the energy consumption increases accordingly, and the coefficient drops noticeably. A ratio of less than 2.4 is considered low. Devices with such values are labeled below A-class.

Winter kit

There are two myths about the efficient heating of air conditioners in the winter cold.

The first myth: when installing a winter kit on an air conditioner with a heating function, it can be used at low temperatures. There is some truth in this - in this case it is allowed to turn on the device, but not for heat, but for cold.

A standard winter kit consists of three elements:

fan deceleration device;
heating the compressor crankcase;
drainage heating - self-regulating heating element.

When the air conditioner is operating for heating in winter, there is no need to slow down the fan, on the contrary, it must rotate even more. Therefore, such a split configuration will only help when cooling the room, when it is necessary to slow down the rotation of the fan to maintain the condensing temperature.

In most cases, the installation of a winter kit for inverters is not carried out completely, but partially, since many devices have a fan retarder already built into a complex electronics system.

The second myth: the purchase of a modern air conditioner with a built-in winter kit and an anti-icing program will allow it to function for heating up to the specified temperature parameters, which very often reach serious values. This is not entirely true. Only a few models belonging to the semi-industrial series will be able to heat the room. In addition to the built-in heater of the drain pan, they have an enlarged heat exchanger. These models provide decent heating efficiency in winter with air conditioning, even at -25 ° C. The rest will be able to work efficiently with such external parameters only for cooling.

The main manufacturers and series of devices with a programmed possibility of heating the room in frost:

In modern production conditions climatic technology there is an opportunity to use an air conditioner for heating, but the purchase of an all-season split will cost much more.

Mobile air conditioner as winter heater

The mobile air conditioner has combined all internal working elements in one case refrigeration machine... When working in the cold, air is drawn from the room, inside it is divided into two parts: the cooled flow goes back, and the warm one is removed through the discharge corrugated hose to the outside.

To heat the air, a heating element is installed in most monoblocks - a built-in electric heater. The compressor works the other way around: cold air comes out into the pipe, and hot air into the room. At the same time, electricity consumption increases significantly. Accordingly, the efficiency of work decreases, and heating mobile air conditioner becomes costly.

At the same time, there are three significant advantages:

with the help of this structure, it is possible to serve areas up to 60 m²;
heating by air conditioning in winter is possible at any outside temperatures, since there is no external unit at all;
a ceramic heating element can be installed in the mobile unit to heat the air.

An accurate thermostat is placed in a monoblock with heating mode, which, when the device reaches the set temperature, will turn off the compressor.

There are not many manufacturers producing high-quality monoblocks with heating function. The most famous among them:

Selecting an air conditioner with a heating function

Regardless of the preferred design of the device, when choosing an air conditioner for heating, it is imperative to pay attention to the following characteristics:

rated power consumption;
heat performance;
energy efficiency class;

Often new users of air conditioners have questions regarding winter operation and the use of air conditioners. Let's see what features and nuances the air conditioner has in the winter. Here we have collected all your most frequently asked questions and will try to answer: "How to use the air conditioner in winter? How to use the air conditioner in winter?" So let's go.

Can I use air conditioning in winter? Can the air conditioner be turned on in winter? Will the air conditioner turn on in winter?

Yes it is possible. You can use the air conditioner in winter if your air conditioner is designed to work in winter. Open the instructions and specify this feature specifically for your air conditioner. Specify exactly the temperature range of the air conditioner. Whether it is possible to use the air conditioner in winter and whether the air conditioner can work in winter will become clear after specifying these parameters. Instructions for most air conditioners can be found on this website. Usually inverter air conditioners renowned manufacturers designed to be switched on in winter, not expensive ON / OFF air conditioners. We must not forget that switching on and working in winter for heating for any air conditioner is an "extreme" mode.

Should I turn on the air conditioner in winter? Should the air conditioner turn on in winter? Do I need to turn on the air conditioner in winter?

We answer this frequently asked question. If this is not necessary, you do not need to specifically turn on the air conditioner in winter. Therefore, whether the air conditioner needs to work in winter depends on your needs. If there is no need for this, the air conditioner can be left off until warm.

Why turn on the air conditioner in winter?

You may need to turn on the air conditioner in winter, for example, to heat a room, apartment, house. It is convenient, fast, efficient and very economical. Turning on the air conditioner in winter for heating is the most common reason. The second reason is to turn on the air conditioner in winter for cooling. Yes, don't be surprised. This mode is sometimes needed. Below we will analyze the features of air conditioners operating in winter for heating and cooling.

V technical characteristics air conditioners manufacturers indicate the permissible values of the outside temperature at which the stable operation of this or that air conditioner is guaranteed. These values are different for different air conditioners operating for heating in winter. Typically, inverter air conditioners have a wider temperature range for heating in winter than split systems without an inverter. For example, the best Daikin inverter air conditioners and Mitsubishi Electric inverter air conditioners ( air conditioners winter-summer) are capable of operating in the "Heating" mode in winter at outdoor air temperatures from -15 to + 24 ° C, while a conventional air conditioner without an inverter can operate in the "Heating" mode from -5 ° C and above. Using the air conditioner in winter for heating, based on personal experience, very efficient, due to the high energy efficiency of inverter air conditioners. Spending only 1 kW of electricity, the air conditioner will give 3 kW or more of heat in winter. Great! Is not it? Heating with air conditioning in winter collects mostly positive reviews. But there are limitations, as you already know, in the form of the outside temperature, below which the air conditioner will simply not start up for heat in winter.

What happens to the air conditioner when it is operated at lower temperatures in winter?

The oil dissolved in the refrigerant thickens and becomes unable to effectively lubricate the rubbing and moving parts of the compressor. This is a violation of the terms of the warranty and sooner or later will lead to severe wear and tear of the compressor and its failure. At outdoor temperatures below -15 degrees, it is better to use a conventional heating device (for example, an electric convector).

Air conditioner for winter. Split system for winter

There are special air conditioners for winter - heat pumps designed to work and heat indoor air in winter. For example, heat pumps ZUBADAN from Mitsubishi Electric are capable of heating with high energy efficiency at outdoor temperatures ranging from -25 to + 24 ° C. For conventional and even inverter air conditioners, this is not an achievable threshold.

Air conditioner operation for cooling in winter.

Is it possible to turn on the air conditioner in winter on "Cooling" in winter? This question arises when it is necessary to cool the air in server rooms, hardware rooms, computer rooms and similar rooms, even in winter. In order for the air conditioner to be able to start, work and cool the room, it is necessary to additionally install a winter kit for the air conditioner. The best performance characteristics and reliability in cold winter conditions are possessed by Mitsubishi Electric and Daikin air conditioners operating in winter. Split systems for Daikin winter can be equipped with outdoor units with winter sets already installed at the factory "Hoarfrost -30C" or "Iceberg -40C", which allow you to turn on the air conditioner in winter for cooling.

Why doesn't the air conditioner turn on in winter? Why doesn't the air conditioner work in winter?

Often you have to deal with a situation when the air conditioner does not work in winter or does not turn on. This happens for several reasons. Firstly, this is when the air conditioner simply does not have such a function and is intended only for summer. The second reason is the temperature sensor in the outdoor unit, which protects your air conditioner from starting in winter at temperatures for which it is not designed, the so-called "foolproof".

Do you need air conditioning maintenance in winter?

The air conditioner does not require any special maintenance in winter. If you do not need to cool or heat the air in winter, then leave the air conditioner off until spring.

Checking the air conditioner in winter. How to check an air conditioner in winter?

First of all, refer to the instructions and find out if your air conditioner can turn on and work in winter at subzero temperatures outside. Check with a thermometer outside. If the air conditioner is capable of operating at this temperature, then you can turn it on. You can check the air conditioner in the winter by turning it on for heating. The air must be hot. If the air conditioner does not heat well, most likely there is not enough freon in the system. In this case, leave the air conditioner turned off until it becomes warm. It will be possible to refuel and re-check the air conditioner in the warm season when outside temperatures are above zero.

Nowadays it is no longer so easy to buy an air conditioner that can only work in cooling mode. The overwhelming majority of devices are able not only to create a comfortable indoor climate in summer, but also to provide them with warmth in winter. Since the operation of an air conditioner for heating is somewhat different from cooling, for the successful operation of a split - system during cold weather, some rules must be observed. How to handle the unit under these conditions will be described in this material.

Before answering this question, let us examine some aspects of the split-system operation in heating mode. Freon circulating between two heat exchangers is capable of evaporating at low temperatures; this property is used to transfer thermal energy from one medium to another. In summer, freon boils and evaporates in the internal heat exchanger, taking heat away from the air in the room.

Having passed into a gaseous state, the refrigerant is pumped by the compressor into an external heat exchanger, where it condenses under pressure and gives off heat to the environment. When winter comes, in modern units it is possible to send freon to reverse side, thereby changing the places of the heat exchangers and their purpose. The refrigerant is now evaporated in the outdoor unit and condensed in the indoor unit. Heat is extracted from the outside air and transported into the house.

In this case, the only mechanical unit of the system - the compressor, is in the cold, in the outdoor unit. How efficient it will be when the air temperature drops and becomes negative depends on the type of air conditioner, and they are:

conventional reversible;
inverter.

In reversible split systems, the compressor operates in start / stop mode. It stops after the set room temperature is reached and automatically turns on when it drops again by a few degrees. V inverter air conditioners the supercharger never stops, it changes the performance at the command of the controller, going either to the operating mode or to the minimum "quiet" mode.

A conventional reversible air conditioner cannot be turned on for heating at a temperature of minus 5 ° C and below. The reason is the breaks in the operation of the compressor, during which the oil in its crankcase cools down and thickens strongly. The unit will work in extreme mode and will quickly fail.

Inverter split - systems are devoid of this drawback, since the supercharger in them operates constantly. But the heat generated by the unit and preventing the oil from thickening is enough only up to the temperature environment minus 15 ° С. With a further decrease, the same will happen as with a conventional air conditioner. Accordingly, the lower temperature limit for inverters is minus 15 ° C.

If we talk about practice, then the heat performance of most devices decreases sharply even at 0 ° C outside. The explanation is simple: air at negative temperatures contains significantly less thermal energy than at positive temperatures. To efficiently extract it, it is necessary at least to increase the area of the heat exchange surface, which is impossible to do. In addition, the resulting condensation in the cold begins to freeze, which again will lead to the inoperability of the air conditioner.

So, the answer to the question whether it is possible to turn on the air conditioner for heating in winter is ambiguous. In general, yes, you can, but efficient heating you only get up to zero degrees in the yard. In the range from 0 to -5 ° С outdoors indoor unit will give out warm, but not hot air. Therefore, it is better to use it as an additional source of heat.

At lower temperatures, only inverter split systems can be operated, but they are unlikely to be able to provide you with heat to the fullest. For example, if at -15 ° C in the yard you set the room temperature to +25 ° C, then the air conditioner will not be able to catch up so much, all the time working in maximum mode.

How to turn on heating mode

Switching the air conditioner to heating is no problem. This is done using the remote control, and in some cases, using the control panel built into the indoor unit. This process involves keys with the following inscriptions:

Heat;
"Auto".

Note. The indicated keys in one form or another take place on remote controls all manufacturers. The rest of the buttons are intended for cooling, ventilation, dehumidification and adjustment of the angle of rotation of the blinds.

First, it is necessary to connect the unit to the network with the appropriate key, then switch it to heating with the “Heat” button and adjust the air conditioner by temperature, setting it on the display using the “+” and “-” keys. If necessary, at the end, you can press the "Auto" button, then the unit will automatically maintain the set temperature in the room.

Why does the air conditioner not turn on for heating?

Sometimes during the operation of split - systems there are problems with starting the heating mode. The colder the weather outside, the more often you have to face various difficulties. A very common situation is when, after pressing the corresponding key, the indicator on the panel lights up, but the air conditioner does not turn on. Inaudible neither the fan nor the compressor outside.

Before looking for faults, it is recommended to wait a while, sometimes up to 15 minutes. This is how long it takes for the unit to adjust to the mode and warm up the indoor unit. After that, the air conditioner will turn on successfully and gradually go out to working temperature... Another familiar situation is that the indicators are green, the compressor and the outdoor fan are working, and the air temperature at the outlet of the air conditioner is almost the same as room temperature. There may be a number of reasons for this:

it is too cold outside and the device is simply not able to heat the air by more than 3 ° С, it lacks performance;
managed to freeze the outdoor module, and the defrosting system is absent or does not work;
a four-way valve has failed, whose task is to switch the refrigerant flow in the opposite direction;
banal leak of freon from the system.

Advice. The malfunctions listed in paragraphs 2-4 are unlikely to be eliminated by hand. In this case, it is better to call a specialist, he will accurately diagnose and repair your device.

Conclusion

Since the air conditioner does not work to heat in any way efficiently in frosty conditions, it is unlikely that it will be possible to constantly heat the house with its help. This idea attracts many, because supplying 3 kW of heat inside, the unit consumes only 1 kW of electricity. But the split system can be used in certain time years, when outside from 0 to +10 ° С.

How to choose a split system Recommendations for choosing an air conditioner without an outdoor unit Split system winter kit How to make right choice air conditioner for apartment

The heating function is becoming an increasingly popular complete set of household climatic equipment. The relevance is associated with periods of off-season, when the central heating has not yet been turned off. But the question is also often asked: is it possible to turn on the air conditioner for heating in winter? Manufacturers of climate equipment produce special "winter kits" for air conditioners, some models are equipped with built-in heating systems at low air temperatures. Let's take a closer look at whether it is possible to use a split system as an additional heating device in winter.

Main function

The main primary function of household climatic equipment is cooling interior space apartments, rooms. That is why the purchase of air conditioners has become a mass phenomenon before the start of the summer season. How does the air cooling process take place?

The split system is equipped with a cooling circuit made of copper pipes... Freon circulates inside. Features are such that when it evaporates, it is able to cool the air. The internal block of the climate device has a heat exchanger through which the freon evaporates and gives off cold. A nearby fan supplies room air to the evaporator, drives it through it, giving out a cooled stream.

Then the heated freon moves to the external block, inside of which it is converted, gets rid of the accumulated heat and, ready to cool, returns to the evaporator again. Thus, the main cooling function of the air conditioner is realized.

Cooling mode

The refrigeration appliance manual indicates the temperature range where the appliance operates at maximum output and efficiency. For the cooling mode, the lower limit is -5⁰C, for some units - up to -25⁰C. If the temperature changes below this level, the equipment cannot be turned on.

In addition to freon, oil circulates inside the cooling circuit, which lubricates the compressor parts of the outdoor unit. Its presence is required for effective work climate devices. A decrease in temperature readings contributes to the thickening of the oil. The compressor starts to work hard, wear out, and can quickly break down.

Another point is that the subzero temperature freezes the liquid discharged by the drainage system. This will gradually cause condensation to overflow from the indoor unit.

It should be remembered that when the heat is released, the outdoor unit will inevitably be covered with ice in winter, which will reduce its efficiency and increase energy consumption.

The manufacturer's -5⁰ C (or -25⁰ C) indicates that the device can work up to this limit for cooling, but not heating. The actively sold "winter kits", heating elements of the equipment, are designed specifically to ensure the efficient operation of the air conditioner for cooling when the outside temperature drops. The operation of the device for heating is not facilitated.

Winter kit

It is a collection of several devices:

Drainage heater. Heats up communications so that the discharged liquid can pass freely through the pipes.
A device that heats the compressor crankcase of the outdoor unit. It contributes to the heating of the inactive compressor, so the latter starts up already warm, the oil is liquid, the freon is cooled.
A device that reduces the fan speed to normalize the efficiency of the device (for the cooling function, when heating, the fan must rotate faster than usual).

Installing the kit on a unit with a heating option will not help the air conditioner to function properly in winter. This arrangement will only be correct in the case of cooling work.

Equipment modifications equipped by manufacturers with a winter kit and an anti-icing program are also ineffective in winter, despite the specified temperature ranges. In frosts, a small part will work. Models of semi-industrial type are capable of heating.

Heating mode

This function has become available recently. Convenient when it gets cold inside the apartment before or after work central heating... Off-season periods are associated with a lack of warmth. Heating electrical equipment - energy-consuming Appliances, and therefore not economically profitable. Against its background, an air conditioner with a heating function looks more attractive. How does the air heat up?

It should be understood that any split-device is non-heating equipment, since it is not equipped with a heating element. With the environmental parameters admissible by the manufacturer, the heating function is implemented by the reversible movement of the freon.

A four-way valve installed inside the outdoor unit allows the refrigerant to circulate back. Evaporator and condenser function change. Now the heat exchanger of the indoor unit receives the heat of the freon, cooling it down. The fan blows air through the newly formed condenser, warming up the flow.

Freon is supplied to the outdoor module cooled down. There he absorbs the heat of the surrounding air, returns back inside the room.

That is, there is no heating of the air, only the transfer of heat from one place to another. This scheme is effective when the ambient temperature is positive. If there is a minus outside the window, it stops working, because the heat exchanger of the outdoor unit is not enough for the freon to release the cold, the module turns out to be small for this.

There are air conditioners that can effectively heat a room in winter. But they are closer to semi-industrial, equipped with an enlarged external heat exchanger, which contributes to the heating of freon.

Conditioners for winter

Climatic equipment capable of working in winter:

Daikin CTXG-J / MXS-E
Toshiba DAISEKAI SKVR
Hitachi PREMIUM, ECO
Panasonic HE-MKD
Mitsubishi Electric DELUXE, PKA-PR

The devices are equipped with an air heating system in the apartment in winter. Their cost is higher compared to standard split systems. The conditions of use must be carefully studied by reading the instructions, technical data sheet.

Climatic equipment, even those equipped with a heating option, is strongly recommended to be turned off before frost. This will prevent compressor wear and tear. The device can effectively cool down to certain low temperatures. Modern split units are programmed to turn off automatically when they start heating at sub-zero temperature environment.

The only exceptions are single models designed by the manufacturer for winter operation. They are equipped with an enlarged heat exchanger, programs for efficient room heating, anti-icing.

In other cases, the split system should be prepared for wintering by draining the indoor unit with two-hour ventilation, the external unit should be protected from snow and ice with a canopy or cover.

Friends! More interesting materials:

Ouch! There are no materials yet (((. Browse the site yet!