power consumption of 123 kWh a−1 (energy efficiency class A+) and fully integrated built-in type Miele K-32122i with a volume capacity of 151 l and a power consumption of 98 kWh a−1 (energy efficiency classA++).K-12020S-1 has a meander-shaped,foamed evaporator (see Fig.2) and a plate-and-tube condenser.K-32122i has a free hanging rollbond evaporator and a wire-and-tube condenser.