The definition of air handling unit from ANSI/AHRI Standard 430-2009 states that it's “A manufacturing facility-created encased assembly consisting of a fan or admirers together with other needed tools to carry out a number of on the features of circulating, cleansing, heating, cooling, humidifying, dehumidifying and mixing of air….” In https://industrialchillerhire37148.blogsvila.com/32548873/the-air-handling-units-ahus-diaries