So this thread pops up..
http://www.arboristsite.com/showthread.php?t=126115
The link is a study which by the way does not mention OWB's or Wood furnaces....however it does talk about burning wood in fireplaces and stoves I'm thinking. From the study people seem uneducated about what is safe ,.
for example they state some reasons for home fires....
burning wood that has not been seasoned a full year..
chimneys or flues too large for the wood burning appliance..
metal chimneys that may have cooler-than-normal surface
temperatures or restricted air supplies...
The study also shows that people are out there cutting corners to save a few bucks....my question is why not invest in a real source of heat optimizing biomass?