this unit comes to your requirement like: the large halls, layout offices, showrooms & bank particularly when you need it immediately three phase advantage catechin filter dust filter anti-corrosive blue fin copper condenser extended piping length economy mode hydrophilic blue evaporator fins anti-freeze thermostat dry mode auto mode auto restart with memory function on/off timer wide angle airow self diagnosis cleanable panel fixed and swing louvers air flow direction control powder-coated outer body .