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Journal Article by ASHRAE, 2016
David A. John, P.E.
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When consulting engineers select and specify fans for HVAC systems, they often specify that the motor for a fan should be a premium efficiency motor. This is critical because most variable frequency drives (VFDs) require a premium efficiency motor. Recent regulations that require engineers to specify premium efficiency motors are discussed.
Citation: ASHRAE Journal, vol. 58, no. 2, February 2016