Cooling units are provided. The cooling units include a base having a housing with control components and a cooling tower attached to the base and having an inner flow path and an exterior surface. An air distribution system is attached to the cooling tower and includes an air distribution chamber defined between first and second enclosures, air dispensers are configured in the first enclosure, and a cover is disposed on an exterior surface of the second enclosure. The control components are configured to convey air through the base, the cooling tower, and the air distribution system to dispense air through the cool air dispenser and the warm air dispenser. A cooling unit water supply is arranged to provide cooling water to the air distribution system through the cooling tower and a water treatment module connected to the cooling unit water supply to treat the cooling water.