In the thesis operation of a biomass furnace is presented. The choice of the most suitable Herz furnace for a domestic farm with farm tourism according to the initial investment, cost and energy consumption as well as a period of return on investment was adressed. The study showed that the furnace operating on wood chiplets is not suitable due to excessive space consumption and due to a large initial investment. In addition, furnace operating on wood pellets was also found not economic, because all the pellets need to be bought. The price of the wood pellets is substantially higher than the price of logs and wood chips. Therefore, log burning furnace Herz Firestar 40 kW was chosen due to the most efficient and economic application for domestic farm purposes. Calculation of costs revealed that initial investment, taking into account the price and improved efficacy of a new furnace compared to an old one, becomes profitable after 7 years. We conclude that by purchasing of a new furnace Herz Firestar 40 kW significantly less wood is spent, thus reducing the costs of heating and increasing profits from the firewood sale on the farm.
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