The definition of air handling unit from ANSI/AHRI Conventional 430-2009 states that it's “A manufacturing facility-manufactured encased assembly consisting of the admirer or enthusiasts and also other needed products to execute one or more of the functions of circulating, cleansing, heating, cooling, humidifying, dehumidifying and mixing of air….” In aHUS https://boilerhire26036.blogoscience.com/38969048/the-basic-principles-of-air-handling-unit-ahu-hire