About firewood

"For the feeding of the terracotta stove it is recommended to be used hardwood with intact texture. Softwood and coniferous wood are unappropiate for this task, because they burn too fast and the majority of the generated heat is released through the chimney, overloading the structures of the stove and the chimney.
The rough wood contains a lot of water which is lost through the process of storaging. When the tree is cut the moisture content is generally around 50-60 percent, and the firewood is considered fully dried only after two years. There can be even 40 percent difference in heating value between rough wood and dry wood."

(SABJÁN Tibor Nagy kályhakönyv, Sprinter kiadó h.n., é.n., 384.)