External air conditioner unit

External air conditioner unit: what is it? In detail

In any city, you can see the external air conditioning units on the walls of residential buildings and commercial buildings . They are part of modern split systems and are responsible for the return of heat (or cold, depending on the operating mode) and the removal of condensate.

In this article, we will tell you in detail what role an external unit plays in a split system, why it is needed, how to install it and what nuances to take into account.

General information

An external unit is a part of a split system, most often installed on the facade of a building. It consists of the following components:

  • Fan. With the help of a fan, the air moves through the system air conditioning;

  • The capacitor. With the help of a condenser, cooling is carried out and, in fact,, condensation of freon circulating in the split system;

  • Compressor. This is the heart of the air conditioning system. The compressor provides compression cooling agent and its movement along the contour;

  • Four-way valve. It is installed in those air conditioners that are equipped with air heating function. Responsible for changing the direction of movement of the refrigerator the agent, due to which the air conditioner works for cooling or heating.

Of course, this is not all the «filling» that is hidden in the housing of the outdoor unit of the air conditioner. But we talked about the main components that are worth knowing about, because they are often the ones that need regular maintenance.

external unit кондиционера

Additional protection from snow, rain, poplar fluff, and even birds can be installed on the external unit . The average consumer usually does not use this opportunity, and in vain. After all, it is extremely important to protect the air conditioner unit from precipitation or any other aggressive external influences.

Working principle

To understand the principle of operation of the external unit, it is important to understand how the entire split system works the whole thing. In the indoor unit (mounted on the wall in the room), the refrigerating agent evaporates, which takes in the heat from the room and then moves through the tubes to the outdoor unit, where it condenses. Through the drain pipe, the condenser is drained to the street.

If the air conditioner has a cooling mode, then the entire system works in the opposite direction. And this is exactly what the four-way valve, which we talked about earlier, is responsible for.

Installation features

installing the external air conditioner unit

In order for the outdoor unit to function according to the requirements, it must be installed correctly. It is better to entrust this task to professional installers. To control their work, pay attention to the following nuances::

  • The brackets must be of high quality, made of strong material. Find out the weight of the outdoor unit and only then select the brackets based on this specifications. Consult the store before purchasing;

  • It should be installed at a distance of 20-30 centimeters from the wall, no closer;

  • The location of the block also plays an important role. The further the outdoor unit is from the indoor one, the further the route with communications will have to be laid, which will later complicate maintenance;

  • It can be installed on the facade, above the ground or on the roof. If you install on on the roof, provide protection from birds. When installing on the facade, it is important to consider where it will be drain the condensate. Make sure that condensation does not run down on the windowsill or balcony of a neighbor.


The outdoor unit is the most important component of the air conditioning system. It is necessary for the full circulation of freon and the removal of heat from the room to the street, outside the house. In order for the outdoor unit to work effectively, it must be properly installed and regularly serviced.

Добавить комментарий

Ваш адрес email не будет опубликован. Обязательные поля помечены *