Heat accumulator

The Stûv 30-compact H can be fitted with an accumulator unit which stores part of the heat produced by the combustion of wood. This accumulated energy will continue to dissipate for several hours after the fire has died out to prolong the sensation of heat and well-being.
Most of the heat is used to heat up the room while some is stored in the accumulator.    Closed-door mode prevents the diffusion of heat through the glass and channels energy towards the accumulator.    Gradual restitution of the accumulated heat takes place after the fire dies out. Restitution