How to refuel a mobile air conditioner

Can I install an air conditioner without an outdoor unit?

If you live in an apartment building and want to hang an air conditioner in your apartment, you will probably face a number of difficulties.

Modern developers rarely design the presence of baskets on the facade for the installation of an outdoor air conditioning unit, and in the old «Khrushchev» this is not provided in principle. Sometimes such installation is completely illegal if you live in a historical building, on the facade of which it is forbidden to place air conditioners. That problem has only one solution-buying an air conditioner without an outdoor unit.

Monoblock air conditioners have been sold on the market for several decades. In their name lies the whole essence of such a device: in a single case, all the technical «filling» is located, so there is no need to mount the outdoor unit. Monoblock air conditioners can be installed in a window opening or simply put on the floor. At the same time, of course, you need to perform a number of installation works. But they are not as complicated as when installing an outdoor unit.

A monoblock is one of the most optimal types of air conditioners for an apartment, if the installation of an outdoor unit is impossible. In this article, we will tell you in detail what air conditioners are without an outdoor unit, what are their advantages and disadvantages, what nuances should be taken into account when installing.

General information

Modern air conditioners for apartments without an external unit are significantly different from the usual split systems. The monoblock air conditioner consists of only one unit, which can be placed directly in your apartment. Manufacturers produce wall-mounted, floor-mounted and window-type monoblocks. You can choose the best option, taking into account your wishes and the characteristics of the living space.

Monoblock air conditioners run on freon, while combining a compressor, an evaporator, a condenser, a filtration system and other components in a single housing. This air conditioner does not need an outdoor unit, time-consuming installation and expensive maintenance.

outdoor кондиционеры

You can not do without a monoblock if you plan to use an air conditioner in a historic building, dilapidated housing, office or in a rented apartment, where complex installation work is often prohibited. However, modern consumers are less likely to purchase this type of air conditioning, preferring a more efficient air conditioner with an outdoor unit. Why? Let’s figure it out.

Advantages and disadvantages

A monoblock has many advantages over a split system with an outdoor unit. To begin with, we will list them, and then we will talk about the disadvantages that are important to consider.


  • No outdoor unit;

  • Easy installation and maintenance;

  • It is possible to install after the repair work in the apartment, without additional crushing of the walls and other complex works;

  • Low cost;

  • Connection to the central heating system is possible;

  • Functionality combined with compactness;

  • No drainage system in the air conditioner, if it does not have an air heating function.


  • Low performance;

  • Can only be used in one room;

  • Increased noise level, as a result of uncomfortable operation in the bedroom, study or nursery;

  • Inefficient operation in heating mode;

  • Takes up space on the floor or blocks part of the window opening.

air conditioning for houses and apartments
Split system

There are fewer disadvantages than advantages, but they are quite critical. If your home has the possibility of installing an outdoor unit, it is better to buy a standard split air conditioner.

Yes, its installation is more complicated and more expensive, but the performance is significantly higher, the aesthetic qualities are better, and in general, such a system is more modern. No matter how good monoblocks are, they are gradually becoming a thing of the past.

Briefly about the installation

First, it is important to decide what type of monoblock you want to install. The most common options are window and floor-mounted. There are also wall-mounted devices on the market, but we are talking about them in another material. For now, let’s focus on the first two options.

To install a window monoblock, you must pre-order a window frame with an opening prepared in it. The air conditioner is installed directly in the opening, the cracks are filled with sealant or mounting foam. More information about installing the window unit can be found in this article.

installation of floor heating кондиционера

The floor unit can simply be placed on the floor, then attach a corrugated pipe to the body and bring it out of the window. It is recommended to make a window insert with a hole for the pipe in advance, do not simply put it in an open window pane. So you will significantly reduce the performance of the device. We also recommend placing the unit at a level of one meter above the floor level. The device will work more efficiently there.


If the installation of the usual split system with an outdoor unit is not possible, pay attention to monoblock air conditioners. They are designed in such a way that they do not need an outdoor unit for their full operation. Such an air conditioner can be quickly and inexpensively installed in an apartment, and during operation it will not require serious maintenance.

On sale there are floor, window and even wall air conditioners without an external unit. Monoblocks are cheaper and easier to install and maintain than conventional split systems. Of course, they are not as effective as a standard air conditioner with an outdoor unit, but sometimes this is the only way to solve the problem.

Have you ever installed or used a monoblock machine? Share your impressions in the comments below. Give some tips and recommendations for those who are just planning to purchase a candy bar. Good luck!

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