If you are clear about the demands you make on the firewood, it is of course important to know what burning properties the individual types of wood have. Which firewood burns the longest? Which firewood smells best? Is there wood that crackles particularly comfortably? Only when you know the answers to these questions, you can choose the best wood for your fireplace.
The biggest difference is the use of hardwood or softwood. Coniferous trees grow faster than deciduous trees, which is why they have a lower density and therefore a lower calorific value. The wood is therefore lighter and burns faster, but is easier to ignite. Conversely, hardwood is heavier and denser, but provides long and constant heat thanks to its high calorific value. In addition to these very general differences, however, there are also significant differences in burning behavior between individual hardwoods or softwoods.