The Xenia's two boilers are always insulated: on the sides and on top of the lid to save energy and bring the machine back to the set temperature more quickly. This allows the machine to be switched off again after each use.
As an option, there is now a second insulation consisting of an additional layer of panels from which the air has been evacuated as far as possible - similar to a thermos flask. This allows you to save a further 10 % of energy.