An appliance, comprising: a body having an inflow unit and an outflow unit; a fan to move air from the inflow unit to the outflow unit; a heat-exchanging apparatus to generate condensation water by condensing vapour; a water collecting tray to collect the condensation water generated at the heat-exchanging apparatus; a water container detachably provided at an upper portion of the body as to store the condensation water; a water container mounting unit provided at an upper portion of the body as to mount the water container; a pump to pump the condensation water from the water collecting tray to the water container; and a drain pipe to guide the condensation water pumped by the pump to the water container; the appliance further comprising: a drainage connecting port provided at the water container mounting unit, connected to the water container when the water container is mounted at the water container mounting unit, and separated from the water container when the water container is not connected to the water container mounting unit; wherein: the drainage connecting port configured to be moved into a first retracted open position by the water container when the water container is being mounted to the water container mounting unit, and a second, protruding, closed position when the water container is separated from the water container mounting unit. a body having an inflow unit and an outflow unit; a fan to move air from the inflow unit to the outflow unit; a heat-exchanging apparatus to generate condensation water by condensing vapour; a water collecting tray to collect the condensation water generated at the heat-exchanging apparatus; a water container detachably provided at an upper portion of the body as to store the condensation water; a water container mounting unit provided at an upper portion of the body as to mount the water container; a pump to pump the condensation water from the water collecting tray to the water container; and a drain pipe to guide the condensation water pumped by the pump to the water container; the appliance further comprising: a drainage connecting port provided at the water container mounting unit, connected to the water container when the water container is mounted at the water container mounting unit, and separated from the water container when the water container is not connected to the water container mounting unit; wherein: the drainage connecting port configured to be moved into a first retracted open position by the water container when the water container is being mounted to the water container mounting unit, and a second, protruding, closed position when the water container is separated from the water container mounting unit. a drainage connecting port provided at the water container mounting unit, connected to the water container when the water container is mounted at the water container mounting unit, and separated from the water container when the water container is not connected to the water container mounting unit; wherein: the drainage connecting port configured to be moved into a first retracted open position by the water container when the water container is being mounted to the water container mounting unit, and a second, protruding, closed position when the water container is separated from the water container mounting unit.