Monday, December 27, 2021

What are the types of AHU?

 AHU or Air Handling Unit or Air Handler handles the air to be supplied through the ventilation ducts into the building and return it to the AHU. Basically, to ensure that air is delivered with thermal efficiency. The AHU treats the air by filtering, cooling, and / or heating, humidifying or dehumidifying. Air handling units are important part of HVAC systems, both in residential and commercial areas.

Air Handling Units


An AHU is a metal box having multiple components, channel racks / chambers and dampers which can have design variation as per requirement. Air Handling Units (AHU) with double skin panel construction are Hygienic.

Trosten is one of the best AHU manufacturer in the UAE and their AHUs are certified by TUV Nord, Germany.

We can classify the AHUs as per their usage.

  • Terminal Units are small AHUs for local use. They may have only an air filter, coil and a blower.
  • Makeup Air Units are large Air Handling Units that condition the outdoor air 100%. They do not circulate the air again.
  • Packaged unit is also known as Rooftop Unit (RTU) is designed for outdoors, like roofs.

Let us look at the components of Double Skin Air Handling Units.

  • Blower: One of the most important components of the Double Skin AHU, it helps recycle air in a building. The air inside a blower is properly conditioned.
  • Filter: Filters help to remove the dust and other contaminating particles.
  • Conditioning elements: They help heat or cool the air, as per the requirement.
  • Humidifier: This help maintain the air quality in cold climatic conditions.

Regardless of the kind of AHU, regular maintenance and servicing is an absolute must. This ensures an increase in the durability, functioning and longevity of the Air Handlers.

Trosten manufactures AHU with both direct expansion and chilled water system, after thoroughly understanding the need of the market. The capacity of the Trosten Double Skin AHU varies from 600 CFM to 80,000 CFM, thus making them an ideal choice for big HVAC systems as well.

Trosten has ensured that there is the least chance of microbial growth in its HVAC units installed with its double skin AHU. These AHUs are energy efficient.

Trosten ensures best product quality and customer service.