AHU’s as they are known in the industry, are typically located throughout a building structure and supply filtered and conditioned air to occupied space. AHU’s are usually configured as constant volume or VAV, which deliver a constant amount of air through ductwork and floor or ceiling diffusers. VAV type systems vary the supply air, using a VFD to ramp the motor speed up or down depending on the space requirements. AMSS provides expertise on AHU’s ranging from 500 cfm to over 100,000 cfm.


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