Wood burning in homes contributes about one-fifth of winter fine-particle pollution

A Northwestern University study estimates residential wood burning produces about 22% of winter PM2.5 in the U.S. and links this outdoor pollution to an estimated 8,600 premature deaths per year, with higher exposure and harms reported in many urban areas and among some communities of colour.

Northwestern University researchers report that residential wood burning is a major source of winter fine-particle air pollution in the United States. The study finds that wood-burning furnaces, stoves and fireplaces account for roughly 22% of winter PM2.5 and estimates about 8,600 premature deaths per year associated with that outdoor pollution. The analysis also indicates that many of the highest exposures occur in cities and that some communities of colour experience larger health impacts. The study examined outdoor impacts and did not include indoor exposures. Key facts: - Residential wood burning is estimated to contribute about 22% of winter fine particulate matter (PM2.5) across the U.S. - Researchers link the outdoor portion of that pollution to roughly 8,600 premature deaths annually. - Higher exposure and greater estimated health impacts are reported in many urban areas and among some communities of colour, despite lower rates of wood use in those groups. - The team compared atmospheric model simulations with and without residential wood-burning emissions to attribute the pollution. Summary: The study highlights residential wood burning as a significant winter source of fine particles with uneven effects across places and populations. Undetermined at this time.