The 5-Ton Basic ECU provides an efficient 60,000 BTUs of cooling using ozone-friendly R4O7C refrigerant. This skid-based unit is equipped with 16" supply, return air ducts and a five-position selector switch. Modes of operation include ON-VENT-COOL-HEAT-AUTO. This unit is the 50Hz variant of our 6-ton unit. These units are also available with a turf cart.