Wood pellets are made of super condensed fine wood particles, held together only by natural sap within the original wood fiber. If you’re curious about the wood pellet creation process, check out our post about
how wood pellets are made. Premium wood pellets burn so hot and so easily because of their very low moisture content. Unfortunately, these little heat powerhouses are unable to withstand direct contact with water. The time lapse video below will show exactly what happens when pellets become wet.
As you can see, the water expands the pellets and breaks them down into their original state of sawdust. If pellets have expanded after moisture contact, they are not usable in your pellet stove. (On the bright side – expanded wood pellets make for great natural horse bedding and kitty litter!)