Split Aircons: Ductless mini split air conditioning

Split aircons are powerful and a good option for effective cooling of a room. Unlike central air conditioners, they do not require ducting, which is an advantage as far as installation costs are concerned. Furthermore, the absence of ducting makes it a better energy saver solution. However, they do have limited cover and if you need cooling in more rooms then additional units will become necessary.

The split air conditioner system has an outdoor unit and an indoor unit. The outdoor unit houses the compressor and the fan as well as the condenser.

Indoor Unit

This component of the split aircons, houses the blower, cooling piping which allows flow of refrigerant. The blower sucks hot air from the room into the indoor unit. As the air passes of the cooling piping, the refrigerant inside the tubes absorbs the heat from the incoming air. This makes the air cold, while increasing the temperature of the refrigerant. The cool air is then blown back into the room, while the hot refrigerant is passed to the compressor on the outside unit. The process repeats itself and hence a continuous flow of cool air into the room

Outdoor Unit of Split aircons

The outdoor unit houses the compressor and condenser. The hot refrigerant is pumped into the condenser by the compressor. A fan inside the unit ensures that both the compressor  and the condenser do not overheat. As the refrigerant looses it heat inside the condenser, the temperature of the condenser itself rises. However, as the fan turns, it blows out heat to the open space and also allows air from the open space to get into the unit. The cooler refrigerant can then be pushed to the indoor unit to continue the process.

Advantages of Split Air Conditioning Systems

  • Effective cooling
  • Good appearance
  • Relatively cheap
  • No need for ducting, a cost saving solution in terms of installation and energy usage

Most air conditioning companies in Johannesburg offer repair and installation services for split aircon system


  • Can not cool multiple rooms, an additional unit per room is required
  • Less effective when compared to central air conditioning

Call professionals for installation of split systems in your offices and homes