If you have a good solid black walnut log that you are considering cutting up for firewood, it may be worth a lot more for making lumber. Black walnut firewood is decent but not usually a favorite. It can have a long burn but doesn’t usually put out much intense heat. A lot of the time it doesn’t burn with a lot of flame and has more of a tendency to coal.
Walnut is medium to low BTU on the scale of hardwoods. It is usually not difficult to split and dries fairly easily. Although not a real popular firewood, it is definitely worth burning if it is what you have. If anything, it can have a nice fragrance as it burns.
Post your experience with walnut firewood below.