Stoves with metal casing have been produced in Pärnu since the 1990s. First they were produced at Härma Metall. Since 2006 they have been produced by SKAMET. If you choose a stove correctly – in accordance to the size of bench and other parameters (without water tank), the heating time will make approx. 30-45 min. (model with water tank requires more time for heating, depending on the size of tank). This time is enough to heat sauna bench until 100 degrees. Fresh air intake and used air exit are also relevant.