Fresh Air Makeup Unit (AMU)

An air make-up unit (AMU) is an HVAC system used in commercial and industrial buildings to supply fresh air indoors.

It replaces air lost through exhaust systems, ventilation and other air circulation equipment. The AMU works by drawing in outdoor air, filtering it, heating or cooling it, and distributing it throughout the building through ducts.

These systems also help remove contaminants and regulate humidity to maintain healthy indoor air quality. Fresh air makeup units are commonly used in large spaces such as warehouses, manufacturing plants, sports facilities and other commercial or industrial environments.

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