Kiln dried logs are the most efficient type of wood fuel to use in wood burners, stoves & fireplaces. They have less moisture than other types of logs (such as seasoned) so you get more heat per log. This is because the energy produced by burning the log is used to heat the space surrounding the log, instead of to heat (or burn off) the moisture contained in the log. Typically seasoned logs tend to be cheaper, but this is because they are less efficient than kiln dried logs, so can work out more costly in the long run. 

Less moisture in log = more heat output.

All of our kiln dried logs are dried to have a moisture content of below 20% for the best efficiency, and are Ready To Burn certified (read more about this here!).