Class A means the least residual water. The class is declared under the energy labelling regulation and appears on the energy label of washing machines. It depends on spin speed, drum design and how the machine balances the load, so two machines with the same maximum rpm can have different classes.
Where this comes from
Examples from the index
Frequently asked questions
What does spin-drying efficiency class mean on a washing machine?
The spin-drying efficiency class, A (best) to G, rates how much water is left in the laundry after the final spin of the eco 40-60 programme, measured as remaining moisture content.