Powell Elementary School worked with Setty & Associates (Established in 1984, Setty is headquartered in Fairfax, VA, with additional offices in Washington, D.C., New York City, Baltimore, MD and Mysore, India. ) to design the most cost reduced ventilation system they could. Jeremy Plitt, the head project engineer at Setty, chose 2 of the Edmonds EP900s with modern 0-10VDC control for the project. This picture was before the ecoPOWERS were installed. NOTE also – as of February 2016 we are told that the huge snow storms did not affect the ventilators at all.