Air handling and air conditioning units

In modern heating, ventilation, and air conditioning (HVAC) systems, Air Handling Units (AHUs) and Fan Coil Units (FCUs) are essential components used to control indoor air quality, temperature, and humidity. They play a key role in ensuring comfortable and energy-efficient environments in residential, commercial, and industrial buildings.

A- An Air Handling Unit (AHU) used to condition and circulate air as part of an HVAC system. It typically consists of components such as blowers, heating or cooling coils, filters, dampers, and sometimes humidifiers or dehumidifiers. AHUs are usually connected to a ductwork system that distributes conditioned air throughout a building and returns it to the unit for reconditioning.

* Purpose: Centralized air treatment and distribution
* Location: Often located in mechanical rooms, rooftops, or basements
* Applications: Large commercial buildings, hospitals, airports, etc.

B- A Fan Coil Unit (FCU) is a compact HVAC unit that contains a fan and a coil (either heating or cooling) to regulate the temperature in a specific space. Unlike AHUs, FCUs are typically standalone and not connected to ductwork, making them ideal for individual room or zone control.

* Purpose: Localized heating or cooling
* Location: Can be wall-mounted, ceiling-mounted, or floor-standing
* Applications: Hotels, offices, apartments, and smaller commercial areas

The control and safety keys of any HVAC systems. In the case of fire, sprinkler systems alone are not sufficient to minimize the risk to people and property. It is now a commonly known fact that exposure to smoke and toxic gasses is far more deadly than fire itself and is the leading cause of death associated with building fires.

Preventing the spread of steam and deadly gasses requires the installation of fire/smoke dampers as well. while the energy saving products like Constant Air Volumes (CAV) and Variable Air Volumes (VAV) achieving human comfort.

VAV terminal units are available in many configurations, all of which control the space temperature by varying the volume of cool supply air from the air handler to match the actual cooling load. Volume Dampers and Motorized Volume Dampers can control the air volume bringing any HVAC system to its full potential.