After seeing BKVP's thread this morning about the new 30 model sirocco (coinkeedink?), I got the 20 manual and did a bit of reading. Page 21 in "operating instructions" says this re: wood. FUEL "Blaze King recommends using dry seasoned wood, split and stacked and protected from rain for at least 24 months with a moisture content of 13% or lower. It takes a great deal of energy to evaporate the moisture contained in green wood and that energy will not be heating your house. Green or wet wood will greatly increase creosote & combustor problems."