Basically, after the end of the summer season, there comes a great opportunity to install new split systems or replace outdated devices with new, more advanced models. Naturally, almost all owners have a question: how to remove the split system yourself and is it possible, since the call of specialists from this area is very tangible “hitting the pocket”. But you can dismantle the systems on your own, you don’t need special skills here. It is enough to know the sequence of work performed.
Oversized split systems
In order to properly remove the split system, you need to know exactly in what sequence you need to dismantle the device. In addition, much will depend on the type of air conditioner. Of course, removing a conventional air conditioner is easier than removing and moving a split system to another place, but in any case, knowing the correct sequence of actions, you can handle it on your own.
To begin with, it is advisable to choose the tools that will be required for the job. Be sure to take care of this, as you will save time when each key is at hand. So, you will need:
- plus and minus screwdrivers;
- hexagons;
- soldering iron;
- wire cutters;
- brush.
The process of dismantling floor or wall mounted air conditioners looks simple.
- First, the channels through which the working fluid circulates are blocked.
- The air conditioner is brought into working position. To ensure that all liquid comes out of the device.
- At the last stage, the device is disconnected from the network, the drain is disconnected, the pipes that supply the working fluid to the device are disconnected.
- Now the air conditioner can be removed from the wall.
Dismantling split systems
Before you remove the split system yourself, it is important to understand that the most important goal during dismantling is to ensure the safety of freon in the device. It is desirable to carry out the work in such a way that in the future it will not be necessary to refuel the device or to completely recharge it with refrigerant when the system is installed at a new location.
So, the sequence of actions when dismantling the split system will be as follows.
As you can see, it is not difficult to remove the split system yourself, the most important thing is the correct order of work and no haste.
Dismantling of large systems
In a separate group, cassette-type air conditioners, which are considered the most complex of air conditioning devices, should be singled out.
These devices are large and quite heavy, so it is advisable to involve a partner in this process to help. And by the way, keep in mind that when dismantling the system will have to be depressurized. Therefore, after installation in a new place, the pipeline will need to be blown out so that there is no air.
All dismantling work begins with turning off and blocking the pipes through which freon enters the device. It is also necessary to turn off the electrician and only then turn off the system itself.
For structures of this type, shut-off valves are provided, so work should begin with its disassembly. To do this, it is advisable to use a grinder or hydraulic shears designed for cutting metal.
When the shut-off valves are dismantled, the device should be removed from the mounts by wringing them out. If you are in doubt about the correct sequence of work to turn off the electrics, then you can use the manual that comes with all split systems.
Split systems of channel type
In terms of dismantling, such devices are the most difficult, since they consist not only of fairly massive blocks, but also have a large network of branched air ducts. That is why all work should begin with them. After the duct system is disassembled, you can proceed directly to the dismantling of the device itself.
Work starts from the place where the grate goes into the room, then gradually moves to the direct place of their connection, and then similar work is performed, as in the dismantling of other systems.
The pipes through which the refrigerant enters the unit are disconnected. Then the device turns on, it works until cold air comes out. After that, the device is disconnected from the network and the electrical circuit of the system is completely dismantled.
It should be added that only a few use duct-type air conditioners to cool an apartment or an individual residential building, so you are unlikely to have to face the problem of dismantling such a massive and heavy device.
Dismantling the split system in winter
Everyone knows that split systems can be used not only for cooling, but also for heating a room. And the situation happens, it develops in such a way that it is required to remove the system in winter. The dismantling of devices in winter and summer is somewhat different, since in the hot period it is necessary to pump all the freon into the second unit, which is located on the street.
To do this, the system is connected to the network, the “cold” mode is set, the low pressure parameters are set on the pressure gauge. Next, block the flow of coolant by closing the high pressure valve. As a result of such manipulations, all freon is in the second block, which is installed outside. The split system must be turned off when the pressure gauge reads zero.
In winter, almost all the coolant is in the outdoor unit, so there is no need to pump it. Based on this, it is even easier to remove the split system with your own hands in winter. To do this, simply turn off the device and remove both blocks. The only thing with which difficulties may arise is with the overlap of taps. If such a problem occurs, it can be easily eliminated by heating them with a hairdryer.
Good to know! experts do not recommend storing split systems for a long time in a disassembled state. This is due to the fact that during long-term storage air can enter the pipes, as a result they will oxidize, and this will provoke a breakdown of the entire system in the future.
For long-term safe storage, it is necessary to pump nitrogen into the system unit (internal), but it is simply unrealistic to do this on your own at home.
Conclusion
When deciding how to remove the split system yourself, do not forget about your own safety. Everything is simple if you live in your own house: you set up a stepladder and did the necessary work. And if you live in an apartment building, on the top floor, and you have neither a loggia nor a balcony?
In this case, it will not be possible to do without outside help. You will have to attract friends who could insure you.
Dismantling the split system allows you to deal with its cleaning. When you disconnect the drain hoses, check them. Look at the fan blades. It is possible that during the period of long work the surfaces have become contaminated, and it would not hurt to wash them.
Only it is advisable to carry out all work after the dismantling of the equipment has been completed and do not forget that electrical circuits and boards are built into the indoor unit. Therefore, if you decide to wash the fan, be sure to remove it first.
Some people install air conditioners in their apartments in the summer to escape the hot weather. However, sometimes it is necessary to dismantle such a device. The reasons for dismantling can be different, but most often they are removed due to breakdowns. Before proceeding with the removal, you need to familiarize yourself with how to remove the air conditioner from the wall during the repair.
Before you start dismantling the device, you need to understand the features of its device. This will help to avoid unpleasant consequences during the work. The device consists of two main blocks - internal and external. They are combined with each other by lines that are needed to move the refrigerant.
Most often, it is in this part that there are problems that arise when a person tries to remove the device on his own:
- improper shutdown of the main pipe, which leads to a partial loss of freon;
- air entering the tubes, due to which the air conditioner may break;
- the penetration of foreign objects into the main pipes, which leads to a deterioration in the circulation of freon.
Required Tool
There are several different tools that will be needed to complete the work.
pipe cutter
A pipe cutter is a tool used to cut pipes. It differs from a hacksaw in that it makes perfectly even cuts and does not create sawdust when working. During use, the pipe cutter is put on the pipe, after which it is carefully tightened and rotated around the axis. This is done until the pipe wall is completely cut.
Gauge manifold
This is a special device that is used to control the pressure inside refrigeration systems and air conditioners. Also, a manometric manifold is used to refuel and evacuate cooling systems. Collectors are connected to cylinders with refrigerants and refrigeration units, after which the system is filled with freon.
Keys
When dismantling air conditioners, three types of keys are used.
End hexagonal
Hex wrenches are considered a useful and indispensable tool that is used in the repair of various equipment. Hexagons are used while working with fasteners that have a hexagonal shape. For other fasteners, this tool will not work.
Horn
Open-end wrenches are considered the most common, and therefore they are in almost every home. This tool is used for screwing or unscrewing fixing nuts. During the use of such a key, the nut is clamped between two horns and begins to rotate. The advantages of open-end wrenches include versatility and ease of use.
Adjustable
Some people do not have an open-end wrench and therefore have to use adjustable models when removing the air conditioner. The disadvantages of such tools include the following:
- the presence of a large head, because of which it is sometimes difficult to unscrew small nuts;
- the impossibility of tight fixation of the nut;
- gradual loss of performance.
Side cutters
This is the most popular cutting and biting tool that almost everyone has. These wire cutters are used to cut wires, wires or cables. Sometimes they are used to cut into pieces small metal sheets or plastic products.
Drill
The drill is considered an indispensable device that has many useful functions. Often it is used for drilling holes, grinding surfaces or driving screws. However, some types of products can be used to unscrew fasteners. It is this function that will be needed to dismantle the air conditioner.
Screwdriver Set
To quickly remove the cooling system from the wall, you will need a set of screwdrivers. When unscrewing the fixing screws, cross-shaped and straight screwdrivers are used. When doing this, it is better to use tools of different sizes, as the screws can be small or too large.
construction knife
A construction knife is considered a universal tool that is used not only by builders, but also by designers, needlewomen, and craftsmen who repair household appliances. Previously, such a knife was used only for cutting paper, but now they cut foam, leather, cardboard and even plastic.
How to release freon with your own hands
Before dismantling the air conditioner, it is necessary to drain the freon from the system. To do this, you must perform the following steps:
- Close the valve located between the thin main tube and the device body.
- Turn off the tap located on the thick pipe. This is done as the refrigerant moves into the condenser.
Dismantling sequence
outdoor unit
Dismantling begins with the disassembly of the outdoor unit. First, the thermal insulation of the structure is removed. Then the nuts responsible for attaching the air conditioner to the wall are carefully unscrewed. When the fasteners are unscrewed, the system is carefully removed. It is better to do this together so as not to damage anything.
indoor unit
To remove the indoor unit, follow the steps below:
- remove the housing cover;
- disconnect the cable that is responsible for the supply of electricity;
- unscrew the pipe;
- remove the heat insulator and disconnect the freon pipe;
- unscrew the screws and remove the indoor unit with the mounting plastic.
Dismantling features
There are several features of dismantling, which must be familiarized with in advance.
Cassette devices
Some install cassette models of devices in the apartment. Their main feature is the presence of reinforced block protection. Before proceeding with the removal, it is necessary to get rid of it with the help of special electrical appliances. Then the device is disconnected from the network, after which the refrigerant is pumped out and the pipes are unscrewed.
ducted
Channel devices are more difficult to remove due to the fact that they are very large.
In what cases it is not necessary to dismantle
There are several cases when it is not necessary to completely dismantle the air conditioner:
- Wallpaper re-gluing. Some remove structures when wallpapering, but this is not necessary. It is enough just to remove the case of the indoor unit.
- Wall alignment. In this case, only the internal part of the system is also dismantled.
Common Mistakes
There are several common mistakes that are made when dismantling air conditioners:
- improper disconnection of tubes;
- improper refrigerant transfer;
- use of inappropriate tools.
Conclusion
People who have air conditioning installed sometimes have to deal with removing it. Before that, you need to familiarize yourself with the basic recommendations for dismantling such systems.
Greetings to all guests and readers of the Air Conditioner site. In this article we will talk about how to remove the air conditioner. It often happens that the indoor unit of a split system prevents repairs in the room. In what cases will it be necessary to remove the air conditioner, and is it possible to do without dismantling? We will also consider these issues in the article.
How to "unfasten" the indoor unit of the air conditioner from the wall:
To remove any indoor unit, you first need to “snap off” the bottom clips. Most blocks have two clips at the bottom, which I point to with various arrows or serifs. There are three main types of these clips. The first two can be difficult to determine (experience or knowledge of a particular model is required). So what are their differences:
- top plate hook.
In this case, you need to push the clips upwards to release the indoor unit;
- hook for the bottom plate.
Often in such cases there are additional holes (as in the photo). In this situation, the clip must be pulled down from the block. This will require a device (something like a screw cap);
- clips under the decorative cover of the indoor unit.
Here, first you need to carefully remove the cover, and then everything becomes clear. Using the LG air conditioner as an example, first unscrew the two screws. After, we unhook from the sides front covers, then push it all towards us.
In any case, it is better to contact a specialist, especially if you do not know how the clips of your air conditioner are arranged. Incorrect operation may break the fasteners and the unit will not fit snugly against the wall.
In which case you do not need to remove the air conditioner
Depending on the scale of the repair, and how tightly the indoor unit fits the wall, there are several options for solving the problem.
1 case. Let's say we planned to re-glue the wallpaper, besides, the gap between the wall and the block allows us to do it neatly. Then there will be no point in dismantling the block (extra money down the drain). Here you can "snap off" the indoor unit from the plate and, without disconnecting the communications, paste the wallpaper.
2 case. If during the repair plastering and leveling of the walls will be carried out, then the dismantling of the indoor unit will be required. It is important that, after the completion of the repair work, the length of the communications is enough to install the unit back. During the repair process, it is possible (to grind and putty). Read more about removing only the indoor unit.
3 case. There are situations when the indoor unit has to be removed along with the track. This may be due to the following reasons:
- if it is planned to "lower" the ceiling (the hole through the wall will be lower);
- if the nuts for connecting the route to the indoor unit are inside the wall (features or installation errors);
- to prevent nuts from joining inside the wall after repair;
- to move the indoor unit.
In these situations, it is necessary to dismantle the air conditioner. How it is possible to dismantle the split system, read the article.
Air has a distributed refrigerant transportation scheme between the outdoor and indoor units. Such a device has many advantages, except for one - dismantling the system is much more difficult than a monoblock. And often ignorance of how to remove the air conditioner leads to its failure.
How to properly remove the air conditioner
There are three prerequisites to remove the air conditioner yourself:
- The outdoor unit must be within reach. If it stands on the facade of an apartment building above the level of the second floor, then it can only be dismantled from a window or balcony. Otherwise, you need to involve industrial mountaineering specialists.
- To remove heavy blocks from the wall and properly turn off the compressor, at least one assistant is needed.
- It is necessary to rent a manometric station specifically for the type of freon that is pumped into this model of air conditioner.
Note. The last point concerns stations with conventional (pointer) pressure gauges. Digital manifolds are configured for the brand of refrigerant.
Precautions
If the air conditioner is out of order and cannot be repaired, then it is easy to remove it - there is no need to store freon, the tightness of the compressor, condenser and evaporator is not important.
You cannot do this with a working air conditioner. And in this case, the main thing is that dust and even air do not get inside the system. Otherwise, we can talk about the guaranteed output of the compressor after installation and start-up of the air conditioner in a new place. The reason is a feature of the vacuum pump device.
Freon is extremely fluid, and the temperature difference at the inlet and outlet reaches several tens of degrees. No seals and rings used in conventional pumps and compressors will withstand such operating conditions. The required tightness is achieved by extremely precise adjustment of the surface of the moving elements of the pump to the internal geometry of the chambers. The slightest scratch from a solid particle leads to compressor failure. And such a particle can be a grain of ice formed when moisture freezes in the air that has got inside.
That is why new air conditioners are sold filled with inert gas, which is pumped out with a vacuum pump before freon is pumped.
When the air conditioner is removed on its own, freon must be pumped out, and the blocks must be disconnected. This must be done so that dust does not get inside the system along with air. That is to create a vacuum there. And it is desirable to keep the freon completely (or most of it), so that it would be easier to bring the system into working condition at a new place.
Training
To properly remove the air conditioner, all professional equipment needs is a manometric station, which can be rented.
Every home master has the rest of the tools:
- a set of wrenches and hex keys;
- screwdrivers;
- pipe cutter or side cutter;
- manual metalwork vice;
- pliers.
Freon descent
There are two ways to dismantle a working air conditioner:
- The use of a manometric station to collect freon in the outdoor unit.
- Using a freon pumping and collection station connected to a special two-valve cylinder. The station has its own gauge manifold and a compressor for pumping out refrigerant in liquid or gaseous state.
The first method is more “affordable”, but it can only be used when starting the air conditioner - freon is transported using a regular compressor.
The second way is universal. It can be used even in winter when the air conditioner cannot be turned on due to the low temperature outside. The advantage of this method is also that the external unit will be evacuated - without freon in the condenser. Which is much safer when transported to a new location. But renting such a station and a cylinder will cost more than a conventional manometric manifold.
Freon collection in the outdoor unit
On the side of the body of the outdoor unit there are two fittings from which the pipes extend:
- thin - for transporting liquid freon from the condenser to the evaporator;
- thick - for pumping gaseous freon into the condenser.
Both fittings have shut-off valve heads under the caps. A branch with a nipple departs from the gas head.
The collection of freon in the condenser takes place in the following order:
- Remove protective covers from fittings and nipple.
- A collector is connected to the nipple.
- Turn on the air conditioner to the maximum "cold".
- After a few minutes, the liquid fitting valve is closed, stopping the supply of freon to the evaporator.
- The pressure is controlled by the manometer.
- When the arrow shows “-1 MPa”, tighten the gas fitting valve with a hexagon and immediately turn off the air conditioner (which is why an assistant is needed) - with a long idle, the compressor pump may fail.
The pressure gauge reading “-1 MPa” means that all the freon is in the condenser, and inside the evaporator, in the tubes and in the compressor there is a technical vacuum.
After that, you can separate the blocks.
Removing the air conditioner step by step
Dismantling while maintaining the operability of the dismantled air conditioner is as follows:
- sealing of fittings of pipelines;
- shutdown and dismantling from the facade of the external unit;
- dismantling of the indoor unit in the apartment.
Below is the instruction for dismantling the wall-mounted air conditioner.
outdoor unit
To remove the outdoor unit of the air conditioner, first disconnect the pipes.
There are two ways:
- Unscrew the union nuts that press the flared edges of the tubes to the flanges of the fittings of the outdoor unit. And in place of the nuts, pre-prepared covers are screwed on. Dignity - the tubes remain intact. The disadvantage is the high risk of air entering the compressor.
- Copper tubes are cut with side cutters (about 15 cm from the fitting). Bend the edges and clamp (coin) with a vise. The disadvantage is that the tubes in the new place must be put in new ones. Advantage - the operation is fast and the probability of dust getting inside with air is much lower.
Note. The other cut end of the tube must also be minted to protect the evaporator of the indoor unit.
The next step is to disconnect the cables (signal and power), remove the block fasteners to the frame on the outer wall and lift it into the room.
Compressor
One of the situations when it is necessary to remove the outdoor unit may be to replace the air conditioning compressor. And in this case, the dismantling algorithm is slightly different. The differences are:
- Freon must be completely removed from the system. The correct way is to collect it in a cylinder using a freon pumping station. Wrong, but simple - to lower it into the atmosphere (if the compressor is replaced in the warm season and the air temperature is higher than the boiling point of freon at normal pressure).
- There is no need to caulk the tubes - after installing a new compressor, the system is “pumped out” by an external vacuum pump.
It is impossible for a non-specialist to replace the air conditioning compressor on their own. In addition to the vacuum pump and gauge station, it is necessary to have a gas burner to disconnect the suction and exhaust pipes of the old compressor from the system, and then solder the new unit to the system. And even if you rent equipment, you need to have the skills to handle it.
You can remove the block yourself, but it is better to invite a professional to replace the compressor.
indoor unit
Most residential split systems have a wall-mounted indoor unit (although there are other placement options). But with the exception of the duct air conditioner, other types are dismantled according to the general principle.
To remove the indoor wall unit, proceed as follows:
- remove the housing cover;
- disconnect cables and wires;
- cut and minted copper tubes that go to the evaporator of the indoor unit;
- cut the drainage pipe, drain the condensate;
- "snap off" the latches securing the housing to the mounting plate;
- remove the block and unscrew the plate from the wall.
Dismantling in winter
Air conditioning can work in winter. And not only as a heater, but also in cooling mode (for example, in rooms where servers are located).
Note. It is possible to collect freon in the condenser of the outdoor unit only when operating in cooling mode - in heating mode it already works as an evaporator.
The peculiarity of working in winter in this mode is that there is a lower temperature limit, which is affected by the type of refrigerant, the type of air conditioner and additional equipment. This dependence is also associated with the characteristics of the compressor device - it is oil-based, and the oil thickens at low temperatures. For conventional air conditioners, the lower operating temperature ranges from + 5 ° C to -5 ° C, for inverter - up to "minus" 15-25 ° C.
Before dismantling the split system, these nuances must be taken into account. And if the temperature is below the specified limit, and the air conditioner is not equipped with a “winter kit” with compressor crankcase heating, then to remove the outdoor unit, you must use a freon pumping and collection station (it has an oil-free compressor).
Sometimes there is a need to dismantle the split system installed in the apartment. The inside of the air conditioner may interfere with the room. Sometimes, when moving, it is a pity to leave a well-proven device, for which, moreover, a lot of money was paid. There is an idea to dismantle it and install it in a new apartment. Is it possible to dismantle the split system with your own hands, or is it better not to take risks and not waste your time, but immediately turn to professionals?
Is it worth dismantling the air conditioner on your own?
Before you start removing the air conditioner yourself, you should carefully weigh the pros and cons. First of all, it is worth finding out how much the services of professionals in dismantling a split system will cost. On average, prices can be calculated using a simple formula: each watt of air conditioner power will cost one ruble. Thus, for the dismantling of a split system in an apartment, specialists will have to pay from 2,500 to 4,000 rubles.
Professionals, among other things, have all the necessary tools. It will have to be purchased or rented if you dismantle the air conditioner yourself. The gauge manifold required for the dismantling operation will cost no less than 1,500 rubles, possibly two to three times more. Plus a set of hexagons and a pipe cutter. It is impossible not to take into account the possible malfunctions that the air conditioner can receive during dismantling. The cost of repairing a split system will also be expensive.
Risks when dismantling the air conditioner yourself
If you are going to dismantle the split system yourself, be prepared for possible unpleasant consequences.
- A refrigerant leak from a split system is the least of the troubles that can happen if you remove the air conditioner incorrectly yourself. To fill the liquid, you will have to call the master and pay not only for his work, but also for quite expensive freon.
- The vacuum pump is the most delicate part of the air conditioner. For the safety of the split system during the sale, it is filled with inert gas, which is bled off during installation. The slightest scratch from a speck of dust or ice of condensate that has fallen into the tube will lead to its breakdown. Replacing the pump, which costs a lot of money, also involves adjusting the entire system, for which you will also have to pay.
- It is strictly forbidden to transport air conditioners filled with freon. The fact is that the dismantling process, which will be described below, involves the transfer of all refrigerant from the split system to the external unit. In this case, a pressure of several atmospheres is created there. During transportation, the design of the device may not withstand the load, for example, if the car is shaken in a pit. Then, at best, the tightness of the air conditioner will be broken, and at worst, an explosion will occur.
In apartments located on the upper floors, climbing skills are required to remove the outer part of the air conditioner. Without them, risking your life to save a few thousand rubles is simply stupid.
In general, it’s worth trying to remove the air conditioner in the apartment on your own only if it needs to be removed for the duration. And when dismantling, you need to do everything according to the instructions and very carefully. If you are not confident in your abilities or are going to completely remove the split system, then it is better to call professionals.
How is the air conditioner removed?
The first step is to ensure the safety of freon for the split system. To do this, two fittings should be found on the outside of the air conditioner. The thinner one pumps liquid freon into the indoor unit, the thicker one serves to remove the gaseous refrigerant. The protective caps should be removed from them, and hex socket wrenches should be inserted into the slots.
- The air conditioner turns on at full power in cooling mode. In this case, it is necessary to set the lowest temperature that is provided for this model.
- A pressure gauge is connected to the nipple located on the inlet pipeline.
- After the split system has worked for ten minutes, a thin valve is closed, through which liquid freon is supplied.
- As soon as the pressure gauge shows that a technical vacuum has formed in the system - pressure minus one atmosphere - the thick fitting is blocked, and the air conditioner is immediately disconnected from the network.
If there is no pressure gauge, then you will have to act "by eye". The steam fitting nut is tightened a minute after the supply of liquid freon is shut off. Naturally, in this case, the risk of damage to the vacuum pump of the air conditioner increases significantly. He might not be able to take it if he lingered a little. If the steam nozzle is closed too early, refrigerant will leak.
- Unscrew all the pipes that connect the inner and outer parts of the air conditioner. And immediately hermetically sealed. This can be done with the help of plugs, adhesive tape or electrical tape. The main thing is to prevent dust from getting inside the split system, so as not to get into trouble with the vacuum pump described above.
All tubes and electrical wires that are disconnected during the removal of the split system must be marked, and for reliability, also carefully sketched. This will help to connect everything back and not confuse anything.
- If you plan to move the air conditioner to another place, then it is easier to cut the pipes with a pipe cutter from the inside and outside of the split system at a distance of at least 15–20 cm from the fittings. Their ends must be caulked, you can use a small bench vise for this, or you can use a special rolling press.
- All electrical wires and terminals are disconnected from the air conditioner.
- If necessary, the fastening nuts are unscrewed and the outer part of the split system is removed from the brackets. Such work may require special equipment if the apartment is located high and it is not easy to get close to the air conditioner.
- Remove the protective cover from the indoor unit. It is important to correctly understand which system the latches that hold this part of the air conditioner work on. Usually it is enough to pull the block a little up and towards you. Most often, in order to get to the latches, you have to remove the evaporator cover. In this case, one must be extremely careful: thin tubes that are located in the immediate vicinity of the latches can be damaged.
Often the heads of the fixing screws of the air conditioner face the wall. In this case, you can unscrew them using a piece of Phillips screwdriver, turned with pliers. It is clear that with such an attempt to unscrew the bolts almost blindly, the risk of damaging something in the split system increases many times over.
- In addition, this work cannot be done alone: someone must hold the entire split system unit so that it does not collapse to the floor after being released from the mounts.
- At the last stage, the mounting plate is removed from the wall, and the entire air conditioner is packed for storage or transportation.
Thus, it is possible to rent an air conditioner in the apartment on your own. But because of the high risks, it is wiser to entrust this work to specialists. When moving to a new place, it is easier to leave the split system to new owners for the appropriate fee than to risk its possible breakdown when moving to a new apartment. Moreover, the service life of such systems rarely exceeds 6-10 years.
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