Household appliances such as a clothes dryer, a dishwasher or a washer-dryer with a heat pump unit

The invention relates to a household appliance such as a clothes dryer, a dishwasher or a laundry dryer with a heat pump apparatus, the heat exchanger (1) consists of a guided through finned loop system (2, 3), and the heat exchanger (1) for cooling and / or heating a process air flow in a flow channel (4) is arranged with lateral shields. According to the invention consist of the shield shaped body elements (5) and (6) to the flow channel (4) fill the free space lying at the side or the lateral cavity of the heat exchanger (1) substantially.