Miele’s EcoDry technology guarantees short drying times throughout the entire service life of your appliance. In systems without EcoDry technology, the heat exchanger may clog with lint over time. This results in less warm air inside the drum to absorb moisture from the laundry. This extends the cycle time required to achieve the desired drying results. brLonger cycle times also mean that the heat pump has to operate for longer. Energy consumption and electricity costs increase. After a certain amount of use, this can mean that the energy efficiency class listed on the label of the tumble dryer will no longer apply.