For those sauna bathers that do not need their heater “always on”, the Pikkutonttu has been added to the Tonttu Series. Instead of being always on, the Pikkutonttu is controlled with the Finnleo Digi Series control and turns on only when activated by the control. Even though the heater has a huge rock mass, its super-insulated shell keeps sauna heat-up time similar to a traditional sauna heater. With its 24-hour programmability, users can easily program the Digi series control to have the heater hot and ready at a prescribed time.