Direct expansion units designed and developed by Frost Italy, for direct expansion climate control installations, can be customized in terms of temperature and capacity. Internal units developed in a variety of versions to fulfill a variety of climate control requirements: Direct expansion water cooled chiller and heat pump unit, air/water-condensed Compact Vertical Close Control Units for the cooling of technology filled environments; Ceiling/floor mounted fan convectors and Ceiling void mounted direct expansion cassettes; internal units for Split Systems; Ducted units with relative external units. In addition, Direct expansion units developed by Frost Italy include Heat recuperator units for air exchange and Air cooled condensing unit external heat-chill units.