Abstract: A central vacuum power unit includes separate components that can be disassembled and nested together for compact shipment and storage. In the disassembled and nested assembly, the motor module is nested within the dust bucket, and the dust bucket is nested within the body module. For vacuuming operation, the dust bucket is attached below the body module and the motor module is stacked and attached above the body module. A filter is disposed inside the body module and filters debris from air entering the power unit. Debris is collected in the dust bucket, and filtered air is exhausted from a port in the motor module. Latches on the body module are used to attach the dust bucket underneath the body module in operation, and to secure the nested assembly for packaging and shipping.