Ventilating Fans Specification Version 4.0
The ENERGY STAR specification for Ventilating Fans is currently under revision. Materials related to this revision process are provided below. Partners and other interested parties with questions or concerns regarding these materials or the revision process can contact Abigail Daken, EPA, at Daken.Abigail@epa.gov. This webpage will be updated periodically as new information is received.
EPA updated Section 3Ab of the specification to clarify that bathroom and utility room fans, and in-line fans, with more than three speeds must be tested and meet the applicable efficacy and sounds requirements at their minimum and maximum speeds, and at a speed half-way in between those.