When burning fresh sawn firewood a large amount of the energy within the log is used to boil off the moisture within the log - before any energy in the form of heat can be radiated from the fireplace or woodburning stove etc.
Burning seasoned firewood allows the heat to be radiated from the log in a much shorter time which means less wood is required to build an effective fire and that the fire will give off more heat more quickly!
Our hardwood logs are normally a mixture of ash, oak, birch, beech among others and can be burnt either straight away or after storing indoors for 24 - 48 hours for best results!