Indoor and outdoor units are integrated in one single device. This unit can be placed in a window, or in an exterior wall. The window air-conditioning is extremely durable. The register fins are moving constantly and silently back and forth so that the cool air reaches into every corner of the area, to be cooled. For easy installation and maintenance the device can be pulled out of the chassis, so that the unit does not have to be dismantled. The blower and compressor provide higher efficiency at lower revs and due therefore at a lower sound level.