Advantages and Disadvantages of Ducted Split Systems


One of the most commonly used air conditioning systems around the world is ducted split systems, which are composed of an indoor unit (air handling unit) and an outdoor unit (condenser) connected via a copper pipe. However, like any other cooling system, there are advantages and disadvantages to this device as explained in the following.

ducted split

Advantages and Disadvantages of Ducted Split Systems :

Ducted split systems use the return air inside each unit to increase the working efficiency of the machine, consequently reducing the fuel consumption.

It is good to know that cooling and heating in this unit are carried out through convection of the air in the indoor unit (air handling unit) sucked from the indoor environment. The cooling function of the system is quite similar to Split Ac Unit systems, whereas the heating process is carried out using hot water coils.

In this device, an air handling unit is mounted on top of the false ceiling, distributing air directly or via channels housed in all rooms and spaces.

There are two types of ducted split systems: common and inverter. The inverter ducted split system is equipped with an internal heat sensor capable of adjusting the speed and power of the compressor according to the ambient temperature by changing the frequency of input power.

What are the advantages of ducted-split systems over other cooling systems?

This system is completely independent compared to the central systems and, in addition, offers a higher heating efficiency compared to radiators. Moreover, since the plumbing of ducted split heating is implemented over the roof, a lower amount of hot water pipework is required. The final cost of ducted split systems with a coil is about half the cost of chiller and mini chiller systems, which is one of the most important advantages of ducted split systems.

The oil separator in ducted split systems allows plumbing between the indoor and outdoor units up to a height difference of 15 meters, ensuring the efficiency of the device is maintained over long periods.

In addition to providing adequate cooling, this device has a very strong heating capacity and can save up to 20-30% of winter electricity consumption. Ducted split systems can clean air with the help of washable filters and create a space free from contamination. This device can be easily housed in any space and can be redesigned for extremely cold and warm areas.

ducted split

Disadvantages of ducted split systems :

Note that no zone control is offered with the device, meaning that once turned on, all the spaces, including all rooms, halls, and corridors, will have the same temperature. The air temperature is measured by a thermostat located in the largest part of the house, which is the source of one of the major problems in the ducted split systems, forcing it to raise the temperature of all the spaces to the same level before switching off.

It should also be noted that although this device consumes more power than chillers and mini chillers, its power consumption is lower compared to wall-mounted split systems. As another disadvantage, the ducted split systems generate noises and, therefore, are not recommended for small halls or places where a peaceful environment is required. Although ducted split systems are one of the most commonly used air conditioning systems, the noise from the electric motor of their fan ducts can annoy individuals as it is housed on the false ceiling.

These were the most important advantages and disadvantages of ducted split systems, and having them in mind, one can wisely pick cooling and heating systems. In Iran, due to reasons such as lack of space, differences in taste and lack of familiarity with the technical details, people are faced with difficulties in picking air conditioners. However, knowing the advantages and disadvantages of ducted split systems as well as consulting with experienced DamaTajhiz staff can make it easy for you to pick and buy the right product.