Quick Answer
Burning treated wood in an outdoor boiler is generally not recommended due to the potential for toxic chemicals to be released into the environment and potentially cause health issues when inhaled.
Risks of Burning Treated Wood
Burning treated wood in an outdoor boiler can result in the release of volatile organic compounds (VOCs) and particulate matter, including arsenic, copper, and chromium. These chemicals can cause respiratory problems and other health issues when inhaled. Treated wood is often coated with preservatives such as chromated copper arsenate (CCA) or alkaline copper quaternary (ACQ), which contain toxic heavy metals.
Safe Alternatives and Precautions
To minimize risks, it’s best to use untreated wood for outdoor boilers. If treated wood must be used, opt for wood treated with safer alternatives like borate-based preservatives. Always follow local regulations and guidelines for burning treated wood. When burning treated wood, ensure proper ventilation to minimize exposure to toxic fumes. Operating at higher temperatures (above 200°F) can help break down some of these chemicals, but this may not eliminate all risks.
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