Fire-place stoves are in demand, they fulfill the operators the desires for cosy warmth and well-being feeling ambience. They are popular because logs are regionally available and can often be cut by the operator himself. Scheitholz offers the ecological advantage that it burns CO2-Neutral and thus does not support the greenhouse effect. The other side of this coin is that often stoves with too much power are installed in rooms that cannot absorb the large nominal heat output. The fireboxes that are too large are fitted with a lot of wood in order to obtain a beautiful flame pattern that fills the entire firebox. The installation rooms are therefore quickly overheated. A further operator error is that the too large combustion chambers are equipped with only little wood. Due to the too large dimensioning of the stove, the small fire is operated with too much excess air. Due to this user behaviour, wood-burning stoves are not used properly and cause too high soot emissions. The future trend envisages wood-burning stoves for well-insulated homes, the nominal heat output of which is matched to their intended use, thus enabling efficient heating with lower wood consumption. Thanks to the new catalyst technology, which is integrated into the combustion chambers of the smaller-dimensioned stoves, the required emission limits can be achieved even with small firing capacities. The company LEDA Werk from Leer in Lower Saxony has already developed and established a small capacity stove on the market. With a product of the catalyst manufacturer Blue Fire GmbH, a fireplace stove for low and passive houses has been developed, which enables a precisely fitting heat emission under safe compliance with the current emission limits and a wonderful flame pattern. As standard, this modern stove is equipped with an easy-to-understand electronic heating aid, which shows the stove operator the "correct heating with wood" and at the same time ensures the function of the catalyst.