It does matter what kind of wood we throw into our stove, fireplace, or boiler, absolutely, and an expert will explain why. The most valuable characteristic of firewood is its heating value. Hardwoods are denser (over 500 kg/cubic meter), meaning there is more pure wood material in a given volume. This allows them to burn longer, but it should also be noted that they dry more slowly, so more time needs to be allowed for this. Softwoods are better for kindling because they burn at high temperatures quickly – so it really does matter what purpose we use different types of wood for. Thus, the question posed in the title seems justified, as a diseased, decayed wood behaves essentially like the "worst" softwoods due to its lower density. Is it worth using it for heating at all? The expert interviewed by the German agricultural website Agrarheute thoroughly explored the topic and may provide something new for everyone. Many people cannot afford or do not want to pay for the highest ...