The air handling unit components and Their Purpose

The air handling unit components and Their Purpose

  • By:hqt
  • 2023-05-06
  • 29

What does an air handling unit do?

  • The most fundamental centralized system is a single-zone, all-air setup that commonly includes fans, heaters, coolers, and filters. The term "AHU" here refers to a return air system. Its fundamental operation is as follows: outside air is mixed with some inside return air, and then both types of air are filtered to remove dangerous elements, including dust, soot, and organic particles.
  • A building's or other enclosed air is conditioned and circulated using an (AHU). Air handling unit components generally consist of a frame that holds several parts, including coils, heating and cooling, fans, and filters. These parts are held together and supported by an AHU's frame, a supporting framework. The size and form of the frame are referred to as the frame profile. AHU frames may be created in a variety of sizes and forms to meet a variety of requirements. They can be made of different materials, such as steel or aluminium.

The Components of an Air Handling Unit and How They Work Together?

The AHU consists of several parts that interact to offer ideal temperature control and indoor air quality. The air handling unit components and their interactions are listed below:

  • Filters: 

A vital part of HVAC systems is the air handling unit (AHU) filter. The filter is in charge of purifying the air that moves through the HVAC system by eliminating airborne impurities like dust, pollen, and other tiny particles that can worsen respiratory conditions and lower indoor air quality. Usually constructed of a pleated cloth, the AHU filter is intended to catch particles as fine as 0.3 microns. The filter is put in place within the AHU and placed in the airflow path of the system. The pleats in the filter catch the airborne particles as they pass through, making the air cleaner and healthier to breathe. The type of filter being used, the quantity of air pollution in the environment, and how frequently the HVAC system is operated all affect how often the AHU filter has to be replaced. Filters should typically be replaced every three to six months to maintain the best performance.

  • Fans:

Any HVAC system must include an air handling unit (AHU), and the fan is an essential feature of the AHU. The HVAC system can maintain a comfortable indoor atmosphere because of the air circulation provided by the AHU fan component. The fan has a motor and blades and is normally found within the AHU. The motor supplies the power required to turn the blades, circulate air through the AHU, and transport it within the structure. The size of the AHU and the particular requirements of the building dictates the airflow that the blades are intended to produce. The AHU fan component must be cleaned and maintained regularly to operate at peak efficiency. Airflow can be reduced, and the energy consumption is increased by dirty or broken blades, which increases running expenses and decreases comfort.

air handling unit components
  • Heating:

An integral component of a building's heating, ventilation, and air conditioning (HVAC) system is the (AHU) heating component. The AHU heating component heats the air pumped throughout a building. A heat source, such as a boiler or furnace, and a heat exchanger are commonly used to heat the air in an AHU. A fan circulates the heated air throughout the building as it is driven via a network of ducts. Natural gas, electricity, and oil are just a few of the fuel options for the heating component of an AHU. The kind of heat source employed determines, among other things, how efficient and effective an AHU heating component is. Modern systems are built to be more energy-efficient with better insulation and energy-efficient heat exchangers than earlier systems.

  • Cooling coils:

The temperature and interior air quality are controlled and maintained by air handling units, crucial parts of HVAC systems. The cooling coil, which is one of the most important parts of an AHU and is essential to cooling, is also one of its essential parts. Heat exchangers called cooling coils are created to remove heat from the air that moves through the AHU. A network of copper or aluminium tubes is wrapped around several thin aluminium fins to form the cooling coil. The heat is absorbed by the refrigerant flowing through the tubes when the warm air from the building travels over the cooling coil. The air is cooled during this process and then returned to the building.

A Fresh air handling unit components include productivity and enhanced performance:

 The fresh air handling unit has several qualities that suit various uses. The following are some of the most typical traits of a FAHU:

  • Fan with variable speed: 

You can change the fan's speed with this function, which saves you money and energy.

  • Adjustable temperature control: 

With the help of this feature, you may set the building's temperature to your chosen level while still maintaining comfort.

  • Control the humidity:

 A humidifier adds moisture to the air to regulate the humidity levels in the building. This feature, which filters dust, pollen, and other airborne pollutants, makes the air fresher and cleaner. Humidity levels in the interior environment may be managed using AHU humidifiers and dehumidifiers. This can lessen the chance of respiratory issues and mould formation and increase general comfort. 


Any HVAC system must have an air handling unit (AHU). It distributes air throughout the structure and ensures the humidity and temperature are kept at ideal levels. AHUs are available in a wide range of sizes and designs and can be single or multiple-zone systems. E-ZONG provides an ideal fresh handling device that may improve air quality and energy efficiency while saving you money. Why, then, are you still holding out? Get a FAHU now to start enjoying the benefits.

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