The definition of air handling unit from ANSI/AHRI Regular 430-2009 states that it is “A manufacturing unit-made encased assembly consisting of a fan or admirers together with other needed products to carry out a number of on the functions of circulating, cleansing, heating, cooling, humidifying, dehumidifying and mixing of air….” https://emiliopvycg.blogspothub.com/31552008/the-smart-trick-of-air-handling-units-ahus-that-no-one-is-discussing