A protective guard includes an at least substantially waterproof drape and a collar that extends upwardly from a central opening in the drape and leaves at least a substantial portion of a patient’s back and chest exposed for bathing. The system includes an intake for introducing air at a first temperature; an exhaust for exhausting the air, the exhaust being provided at a higher vertical elevation than intake; and a thermal energy source provided at second temperature higher than the first temperature, the waste thermal energy source being provided between the intake and the exhaust. The system and method may include outputting energy usage information of the system of the household appliance based on the energy usage determined by the energy usage monitor. The position block has a plurality of pin runners served for disposing the first rack components and a tool-receiving hole corresponding to the opening. , by comparing only certain bits of the error count to corresponding bits of the threshold.