The physic-chemical properties of the 11 most used trees in residential wood combustion (RWC) in Chile. The results will be correlated with the emission factors measured in the Emissions Laboratory of the Catholic University of Temuco. These emissions are being measured according to the EPA-28 and EPA-5G methods, as well as through a mini-dilution tunnel. This is an abstract of a paper presented at the 106th AWMA Annual Conference and Exhibition (Chicago, IL 6/25-28/2013).