Ducted Split System Pros and Cons

One of the most common air conditioning systems worldwide is the ducted split air conditioner (central split AC or channel-type split system). Similar to wall-mounted splits, it consists of an indoor unit (in this case, an air handling unit) and an outdoor unit called the condenser, which are connected through copper pipes. However, like any other cooling system, this device also has advantages and disadvantages, which we will review in this article. For more details, stay with DamaTajhiz.

Pros and Cons of Ducted Split Systems

In general, ducted split units use the air inside each space to enhance operational efficiency, which helps reduce electricity consumption. Cooling and heating are achieved by drawing in indoor air and circulating it through the related air handling unit. The cooling function of this system is similar to air conditioners and split systems, while heating is provided through a hot water coil.
In this device, the air handling unit is installed above the false ceiling to distribute air directly or through ducts across all rooms and areas. Ducted or central split air conditioners are manufactured in two types: standard and inverter. The inverter model includes an internal temperature sensor that adjusts the compressor speed and power based on the room temperature by varying the incoming electric current.

Advantages of Ducted Split Over Other Cooling Systems

This system operates independent of central systems and is cost-effective for buildings with fewer than 20 units. Moreover, its heating efficiency is higher compared to radiators.
Also, the heating pipes of the ducted split unit run through the ceiling, which reduces the total length of the hot water piping.
Additionally, the total startup cost of a ducted split system with a heating coil is nearly half that of central chiller and boiler room systems for buildings with fewer than 20 units, which makes it a significant advantage.
Since a central split AC includes an oil separator, it allows pipe installation between the indoor and outdoor units with a height difference of up to 15 meters, ensuring consistent long-term performance.
Besides providing sufficient cooling, this device also delivers strong heating when connected to a heating package and equipped with a hot water coil. It can save up to 20–30% in electricity consumption during winter. Ducted split air conditioners can also purify the air using washable filters, offering a cleaner indoor environment. They can easily be installed in various spaces, provided that engineering calculations are made to determine proper capacity and performance for both hot and cold climates.

What Are the Disadvantages of Ducted Split Systems?

It should be noted that this device does not allow zone temperature control for individual rooms, meaning that when it operates, all rooms, halls, and corridors within a unit will have the same temperature. The air temperature is measured by a single thermostat located in the main area, which leads to uniform temperature across the entire apartment or floor.
It is also worth mentioning that the total power consumption of all units using a central split AC system is higher than when using a central chiller system.
Another drawback of ducted split air conditioners is their noise level, making them unsuitable for small halls or areas where silence is required. Although these systems are among the most popular air conditioning options, the fan motor noise from being installed in the ceiling void can disturb noise-sensitive individuals.

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The points mentioned above represent the main advantages and disadvantages of ducted split systems. It is recommended to consider these aspects carefully when choosing your cooling and heating systems. In Iran, due to limited space, differing preferences, and a lack of familiarity with technical details, many people face challenges when selecting an air conditioning system.

Ducted Split Advantages and Disadvantages in Brief

Here, you comprehended ducted split air conditioning systems, which consist of an indoor unit (air handling unit) and an outdoor unit (condenser) connected through copper pipes. The system recirculates indoor air to improve efficiency and reduce electricity consumption while providing both cooling and heating using a hot water coil. It offers lower installation and operating costs compared to central cooling systems and features air purification through washable filters for a cleaner indoor environment. However, it also has drawbacks such as noise and the inability to control room temperatures independently. This guide aims to give both engineers and general users a clear understanding of the pros and cons of central split air conditioner systems, enabling more informed HVAC system selection.
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