Air Handling Units (AHU) combine a fan (or several fans) with other components such as heating and/or cooling elements, filters, and dampers as a means to collectively condition the air in a building. AHU is a general term comprised of many specific types of air handlers including: Make-Up Air Units (MAU), Packaged Units (PU), Rooftop Units (RTU), and Energy Recovery Units (ERU). Air handlers range from very small, low CFM light-duty construction to very large, high CFM heavy-duty construction, and are used in many types of buildings that require air conditioning such as office buildings, hospitals, universities, schools, manufacturing facilities, and data centers. Typically, air passing through an AHU is clean and varies in temperature depending on the specific application. Energy consumption and noise are often important considerations when selecting a fan for an AHU. Plenum fans and DWDI fans are commonly found in these units, but are not used exclusively. To accommodate the various applications these units are used for, Twin City Fan offers the most diverse and efficient fans in the industry to meet the need of any air handling unit.