Cooling can be provided using chilled beams, fancoils or ceiling-mounted cassette chilled beams. Because the Combi Cooler replaces other components, such as liquid coolers and external condensers, the unit takes up little space. The Combi Cooler is integrated into the air handling unit so all components are located in the plant room, avoiding outdoor or roof installation. Because the appearance of a building is not changed, renovation work is easier, and noisy condenser fans are not necessary.