Difference Between Split AC and Window AC

Edited by Diffzy | Updated on: September 14, 2022


Difference Between Split AC and Window AC Difference Between Split AC and Window AC

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There are two options for air conditioning small spaces such as bedrooms and offices: split AC and window AC. They have distinct appearances and prices. You can install one depending on the installation space available and the area to be cooled.

The primary distinction between split and window air conditioners is based on their construction.A Split AC has two primary components: a condenser separate from its evaporator, which is located within the furnace; whereas a Window AC combines all of its components into a single unit.

Split vs Window Air Conditioning


 All of the parts of a window air conditioner fit into a single, small, portable box. These parts include the condenser, compressor, expansion valve or coil, evaporator, cooling coil, and so on.

A split AC has two components: an outside unit and an inside unit. The compressor, condenser, and expansion valve make up the outside unit, while the capillary tube (expansion element), evaporator, and cooling fan make up the inside unit.


Window AC - Due to their portable design, window air conditioners are suitable for transportable applications.

Split AC - Compared to window AC, split AC is utilised in larger spaces, such as offices and larger rooms, and for aesthetical or low-noise requirements.


Window AC - It demands more room than split air conditioners. It is mounted inside the window. Consequently, at most installations, it obstructs daylight and becomes a security risk.

Split AC - It takes less room than window air conditioners. It is recommended to keep a maximum 6-meter distance between the indoor and outdoor units. The indoor unit is put on the wall of your room, while the outdoor unit is installed outside the building.

Capacity Varying

Window AC - The cooling capacity of a window air conditioner depends on the room's dimensions. Available window air conditioner capacities range from 0.75 to 2.5 tonnes.

Split AC - The capacity of a split AC unit is dependent on the room's size. Available split AC capacities range from 0.8 to 3 tonnes.


A window air conditioner with an open vent lets outside air come in and mix with the cold air made by the unit. This helps keep the amount of carbon dioxide in the home below 700 parts per million (ppm).

Air conditioning units for windows are simple to install. Except for window frame construction, which requires a carpenter/fabricator, no expert labour is required. It is simple to provide for it during construction, whereas later it becomes a burden and an additional expense.

Window air conditioners have simple maintenance and repair.

Air conditioners for windows are intended to fit into a window. This sort of air conditioner does not require any more room. This is a significant advantage if you live in a tiny home or wish to chill in a small space.  The water from these devices will drain into the outdoors with no extra action needed.  The best thing about split air conditioning is that it can be put almost anywhere without getting in the way of windows or natural light. Since the condenser unit is outside, the indoor unit makes very little noise (50 dB) in the room that is being cooled. It may be configured to cool different areas of the house. In addition to floor and ceiling mounted alternatives, vertical or tower, and cassette type split air conditioners are also available. It provides air circulation and consistent cooling across the space.


  • Since the compressor is built into the cooling unit of a window air conditioner, it makes more noise than a split air conditioner.
  • It obstructs a portion of the window and lowers the amount of daylight.
  • Additionally, the window units are not visually pleasing.
  • Since your window is open, someone can remove the air conditioner and gain access to your home by removing it from outside.
  •  A window air conditioner can only cool one room, and it usually doesn't work well in spaces that are bigger.
  • The water from these units could be leaking in bad places, like on people walking by or on a rusty metal roof.
  • This sort of air conditioner may experience rust.
  •  The installation of split air conditioning requires a qualified technician.
  • Typically, split air conditioners have a quiet interior. The split-system air conditioner's external compressor may be rather loud.
  • It is somewhat more costly than window AC. 10 to 20%, depending on capacity and businesses.
  • Split air conditioning units may need expensive renovations, like drilling holes in the wall for the condenser, and the help of more than one agency to install.
  • The outside unit needs considerable room.
  • Indoor unit drains must be correctly designed, or else it becomes a pain in the neck. In a split unit, there is no fresh air, so the CO2 level may rise.

Split AC conditioners have simple maintenance and repair.

Your split-system air conditioner will last years longer with proper maintenance. Additionally, it will continue to operate quietly and smoothly while operating more effectively in terms of heating and cooling. But what does appropriate upkeep entail? It's easy. All you need to do is schedule a service once a year and spend a few minutes cleaning every two weeks.

Yearly Maintenance

Yearly maintenance is the most crucial component of your air conditioner's maintenance schedule. It is possible to accomplish this at any time of year, but it is ideal to do it before the season you use it the most, for instance, the winter in Victoria and the summer in Queensland.

Although you are free to utilise whichever service agent you like, it is almost always preferable to use one of Toshiba's approved service agents. You can have confidence in them because they are:

  • using genuine components to repair things.
  • executing proper maintenance techniques.
  • keeping your warranty intact.

Upkeep of your outdoor unit.

To keep it functioning properly, the exterior unit of your split-system air conditioner needs regular maintenance. The unit must be kept clear of leaves, dirt, trash, and other obstructions in order to prevent blocking. You might not need to worry about your outside unit if you live in an apartment or unit without trees or other vegetation, but homeowners with gardens and deciduous trees should check theirs frequently.

Simply shut off the circuit breaker to unplug the power to your item so that you can clean it. After that, use a hose to spray the appliance to loosen and remove particles. However, your yearly service will take care of cleaning the condenser fins, fans, and coils as well.

Upkeep and cleaning for your indoor unit

Your split-system air conditioner's indoor unit, including its exterior and interior air filters, also requires routine cleaning. For best effects, cleaning should be done every two weeks. Simply wipe off the exterior of your indoor unit with a moist towel to clean it. Avoid using chemical cleaners or sprays on it as they might harm it.

Follow these instructions to clean the air filters inside your appliance:

  • Activate the air intake grille.
  • Take the air filter off.
  • After vacuuming or washing, dry them.
  • Close the air intake grille after replacing the air filters.

The air filters in your air conditioner serve a crucial purpose. They clean the air as it flows through your split system air conditioner because of their perforated design, which allows air to move through them freely but also collects dust and other debris. Your home's air will be cleaner and healthier as a result.

Unfortunately, when dust and other debris accumulate, these filters can become clogged, which will reduce the effectiveness and efficiency of your air conditioner.

Difference Between Split AC and Window AC in Tabular Form

Table: Split AC vs. Window AC
Parameter of comparison
Split AC
Window AC
Main design
It is divided into two distinct halves.
There is no division; it is totally contained inside a single component.
Elements and Components
The compressor and condenser are both outside parts, but the evaporative coil is an AHU (Air Handling Unit) part that is inside.
The compressor, condenser, expansion valve, and other components function as a cuboid-shaped unit.
Space factor
It takes up more room than a window air conditioner.
utilises less space.
Capacity variety
0.8–2 tonnes
0.75–2.0 tonnes
Installation may require expert assistance.
Simple to install.
Noise factor
renowned for its quietness.
observed to be somewhat elevated.
Servicing & Maintenance
Troubleshooting may need technical assistance.
All components are compactly built, making them straightforward to maintain.
Cost element
It can be costly. Installation charges may also be higher.
very inexpensive. Low installation expenses are also included.
It allows for the cooling of big rooms, as well as commercial and office facilities.
single rooms in residences, tiny offices (less than 300 square feet) and the like.

What is a Split AC?

As the name suggests, a single unit consists of two distinct components, with the cooling unit located within the room and the hot exhaust located outside. As the cooling unit is independent, the manufacturer may create a more powerful air conditioner. As the compressor is located outside the room, there is no noise inside. Split air conditioning is an excellent option for workplaces and other commercial spaces. Additionally, it may be used in spaces that lack windows for window AC installation. But it isn't good for rooms in the middle of huge buildings because it would be impossible to connect them to their compressors.

A split air conditioner consists of two primary components: an outside compressor and an inside air outlet unit. In contrast to a system that requires a network of ductwork across the ceiling, split air conditioners rely on a set of pipes to link the outside and indoor air units, which is why they are known as ductless mini-split air conditioner installations. The copper pipes that run through the system move the refrigerant around so that the system can make either hot or cold air.

A split system with the highest ENERGY STAR rating not only allows your system to be more energy efficient, but it also helps to keep the environment clean and reduces your monthly electricity bill by consuming less energy.

If it's time for a new air conditioning unit installation or to replace an existing system with a more energy-efficient one, here's an option to consider. Here is why the split air conditioner system is one of the most prevalent air conditioning systems that works well in houses without ductwork as an addition to your present heating and cooling system.

Installing a Split Air Conditioning System

The appropriate installation of your new ductless split air conditioning system is an essential consideration. There are three potential outcomes if it is improperly placed.

First, the system's heating and cooling capacities will not be at their maximum. Second, your power cost will increase since it is not performing efficiently. As is the case with most appliances, if the split air system isn't working as it should, the extra stress will shorten its life.

What is Window AC?

Window AC is the most prevalent type of air conditioner used in small homes and workplaces. It is a self-contained air conditioning system; it must be installed in a window or similar opening with its face within the room and its outer portion outside the building, as it discharges heat outdoors. As it is a single unit, it is rather noisier than other air conditioning systems. However, it is quite simple to install; all you need to do is insert it in the correct location, and it will begin functioning immediately. Since the compressor and evaporator are both in the same unit, it can only cool small spaces because it has a small cooling capacity.

A window air conditioner is the most basic sort of air conditioner. All of the unit's parts and components are contained within a single box or casing. This type of air conditioner is often mounted in a window and connects into a standard electrical socket. Conveniently, it may be moved from window to window as required and functions independently of the home's HVAC system.

How does an air conditioner work?

A window air conditioner operates according to the same principles as any other form of air conditioning system. It uses its refrigeration characteristics to remove heat and humidity from a space while circulating cool air into it. The fundamental components include a thermostat, a fan or blower, refrigerant-filled tubing, a compressor, an evaporator coil, and a condenser coil.

As the room's temperature rises, the thermostat in the air conditioning unit activates the blower. Air is drawn into the device and passed over the coils of cold refrigerant. The air is cooled as it travels over the cold coils and is then forced into the room, reducing the temperature of the space.

Main Difference Between Split and Window Air Conditioner in Points

Air conditioners and their designs have evolved in response to technological progress and consumer demand. ACs are noted for their ability to maintain a cool environment as they combat hot and humid temperatures. There are many different types of air conditioners available on the market today, including split and window air conditioners. Despite the fact that both split and window air conditioners use similar cooling technologies, split air conditioners are more popular due to their superior structure, comfort, and cooling capacity. Window air conditioners have the same design but have a classic window structure and a lower cost than split air conditioners.

Modular AC

The interior and exterior units of a split AC are located internally and externally, respectively. The indoor unit is fitted within the desired space and functions by drawing warm air in and expelling cold air. The outdoor unit, which is called the compressor, is installed outside the target room and is connected to the indoor unit by drain pipes and electric cables.Warm air is expelled from the exterior unit.

Window AC

Window air conditioning is a single unit that is window-shaped.They are typically installed in window sills.Each window AC unit consists of a compressor, condenser, expansion valve or coil, evaporator, and cooling coil, all of which are contained within a single box. Because they are easy to set up, these air conditioners are a better choice for cooling small rooms.

Both split and window air conditioners operate on identical principles, but their capabilities vary, so they are utilised in distinct locations. Due to the fact that split air conditioners are divided into two major components, they are known to have a greater cooling capacity and may cover a larger area. These are used in massive spaces, such as enormous offices and gigantic rooms. In contrast, a window air conditioner is a single unit, with all of its components housed within a single machine. Consequently, window air conditioners have a reduced capacity and are suitable for smaller spaces. Second, window air conditioners are notorious for making noise, but split air conditioners do not. In contrast, window air conditioners are simple to install and might thus be an excellent alternative for moving. Split ACs must be installed by qualified technicians with expertise.

There are major distinctions between split and window air conditioners:


The split AC consists of two units, whereas the window AC just has one.


The evaporator of a split air conditioner is housed in the indoor unit, whilst the window air conditioner is housed in the same unit.


The interior unit of a split air conditioner may be placed anywhere. However, the window AC must be installed solely in the window.


Split air conditioners emit almost no noise, whereas window air conditioners make more noise.


Split air conditioning is more expensive than window air conditioning.


Split AC is preferable to window AC due to its better efficiency, albeit at a higher cost. In addition to non-IoT AC systems, IoT-compliant air conditioners are now available on the market. These air conditioners support more advanced functions than their non-IoT counterparts.


  • https://www.rfwireless-world.com/Terminology/Difference-between-Window-AC-and-Split-AC.html


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"Difference Between Split AC and Window AC." Diffzy.com, 2023. Thu. 23 Mar. 2023. <https://www.diffzy.com/article/difference-between-split-ac-and-window-ac-1017>.

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