Air handling unit is sometimes abbreviated as “AHU.” As the name implies, an air handling unit is a piece of equipment that handles air. Its internal structure is very simple. The air handling unit (AHU) is the heart of central air conditioning.
It collects outside air and room air, removes dust and other particles from the collected air, adjusts the temperature and humidity and then supplies comfortable and refreshing air-conditioned air into the rooms through ducts.
In air handling unit generally contains in its housing a filter (Pre,Fine Hepa etc.), humidifier, blowers (fans) and heat exchanger (fins). There is no complicated mechanism at all. The system is very simple.
A ventilation unit is asystem designedtocirculte nd exchange air within abuliding or enclosed space.
it helps maintain indoor air quality by removing pollutants ,controlling the humudity levels and providinf the fresh air fromout side.
An exhaust unit is a component of a ventilationsystem that removes pollutants, moisures, or odors from the a buliding orenclosedspace.
Exhaust units commonly foundin kitchens, laboratories, industrialfacilities and other space where air qualityneed to be regulated.
Air washer or Air scrubber units is a typreof air purification device usedto improve indooe air quality. Thisunits are also include humidification component.
They add moisture to the air which can be beneficial in dry climates or during winter when indoor air tends to be drier. The air washer / Air scrubber uses water towash and filter the air.It draws airthrough a wet filteror media, trapping particlesand pollutants in the wather and releasing clean air back into the environment.