A refrigerator's energy efficiency rating is determined by its 24-hour power consumption, so consumers can easily see the energy consumption level from the energy efficiency label. However, this direct visual impression often leads consumers to overlook the refrigerator's freezing capacity. For example, a refrigerator that consumes 0.3 kWh in 24 hours has a freezing capacity of 5 kg, while a refrigerator that consumes 0.6 kWh in 24 hours has a freezing capacity of 20 kg. Looking only at the energy efficiency label, consumers might assume the first refrigerator is more energy-efficient, but in reality, the second refrigerator is clearly more energy-efficient.
Energy efficiency is a concept relative to a refrigerator's freezing capacity, and consumers should not forget this when making a purchase.