The Hotrock is an efficient wood-burning sauna stove, ideal for heating rooms between 6 to 12 cubic meters. It boasts an advanced convection system, separate ash drawer, and an enlarged door with fireproof glass, ensuring both functionality and durability. A key feature is its stone-filling system surrounding the firebox, which enhances heating efficiency and extends heat retention. The stove is equipped with a steam generator, which is activated when the firebox temperature exceeds 374 °C (706 °F) due to the uneven heating of the stones. This produces less dense steam at a faster rate, improving the overall sauna experience. The design also allows for more flexible preparation of the steam room.