Be very carefull what you burn in your stove.
What seems like free firewood can in time wreck your stove and also the liner too,which in turn can create a serious chimney fire.
Pressure treated wood and wood with oil based paint on it is bad for both stove and liner too,as is old treated decking board and fencing.
Wood for a stove idealy needs to be below 15% moisture content in order for it to burn correctly and not damage the stove or the liner.The liner wont draw properly and in turn the stove wont burn to its full potential
I use old plain wood pallets for my kindling in my inset stove (not brown or blue treated pallets,as these have chemicals in them).
I break up the pallets in my garage and I leave them to dry for at least a year before using them for kindling.A euro pallet gives me about 6 large net bags of kindling.A chopsaw and then a small kindling axe are great for splitting the broken pallets into nice pieces of kindling.
I also burn a mixture of firewood from some large felled trees that I have and I also burn briquettes and stove coal.Tree trunks and large branches are cut up with the chainsaw,split with a Fiskars felling axe and then the chopped up firewood is left to air dry for a good 2 years.I regulary check moisture content with a moisture meter.
I buy the stove coal from the garden centre beside the Dart Station in Howth Village.The coal is called Agrina Ecobrite and its HETAS approved for use in stoves.This means its tested and certified for stove use.
Some serious heat from it.
I actually have my stove alite here with it as Im typing this post.