The patented Dual Control function of the ARUBA stove makes it possible to set the temperature of the stove automatically in coal mode and secures a stable room temperature with a constant heat release. Whether wood or coal, the automatic control regulates the air supply, resulting in a high efficiency. With only one handle all three airflows – primary, secondary and jet air – are operated ergonomically and comfortably. Embers from brown coal bring warmth up to twelve hours.