Do Air Handling Units All Use The Same Type Of Control Valves?

Air handling units or AHU are part of the HVAC or heating, ventilating, and air-conditioning system. AHU controls the circulation of air in the HVAC system. Maybe you have seen it already. It’s a huge metal box that has all the complete components that control air circulation. Components such as chambers, heating or cooling elements, blowers, dampers and filter racks are found here.

Since the primary function of AHU is to control air circulation, it has valves for control. So the question is, do all AHU has the same type of control valves? Let’s learn more about this.

There are different types of AHUs

Air handling units have lots of variations and designs over the years. Some components and features have changed or modified to perform better. They come in different sizes also, and most of them are on the rooftop or placed outdoor to allow fresh outdoor air to come in. This would help prevent recirculating the air.

Because of the fact that there are various AHUs, there are multiple valves as well. That would also depend on the structure and type of set up you have in a building or commercial facility. The set up would depend on the size and number of rooms inside the building or facility.

It differs on how the valve should function

The control valve is part of the heating and cooling system of the HVAC. It controls the flow of liquid that cools or heats down the coil pad where the air passes through. As the thermostat sensors identify the temperature of a room or a unit, it will send signals to the heating and cooling coils where the air passes through. The coil will then be replaced by a hot or cold flow of liquid inside. Therefore the air that passes through it will become cold as it enters the ventilation shaft and goes down towards the room.

There are a two-way valve and a three-way valve. This valve helps control the flow of liquid towards the coil to make heating or cooling faster. They also play an important role in maintaining the temperature in a particular room. Each of these types of valves has different kinds that are used today. That would depend on how you want your valves to function. The valves used will depend on the amount of air-conditioning you want in your facility. This will also include the number of floors, rooms, and other areas that require ventilation.