Wood as fire fuelis a renewable energy source. Through its growth (the photosynthesis) the tree becomes the solar energy storage of nature. When the wood is totally dry, it will burn quickly and efficiently when burned correctly. The combustion produces only the amount of CO2, which the tree uses through its growth - that is to say a CO2 neutral combustion.

The consumption of wood in a mass stove is around 12-20 kg of wood per 24 hours - depending on the size and design of the stove.

You only light one fire per 24 hours. The fire lasts around 1 1/2 hours.

The wood must be totally dry and split. Lightweight tree species like spruce, alder and birch dry in 1 year. The heavyweight tree species like beech, oak, elm and fruit trees must dry for 2 years. It is important that the wood is split in pieces under 10x10 cm. in cross section. Keep the wood under cover with plenty of ventilation.

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