The definition of air handling unit from ANSI/AHRI Standard 430-2009 states that it's “A manufacturing facility-manufactured encased assembly consisting of a fan or fans as well as other necessary gear to perform a number of on the functions of circulating, cleansing, heating, cooling, humidifying, dehumidifying and mixing of air….” In https://air-handling-units-ahus72592.tusblogos.com/32572702/ahu-hire-can-be-fun-for-anyone