Kiln dried logs provide the ultimate clean burn with maximum heat output and are a cleaner insect free firewood kiln dried logs burn so hot you39ll use less to achieve the same output from seasoned logs so by swapping to kiln dried logs you39ll save a lot of money in the long run for every one kiln dried log yoursquod need at least three normal wood logs to achieve the same heat output the higher temperatures generated by kiln dried logs mean that everything is burnt even the gasses