Do wood stoves produce more carbon emissions than gas heaters?

Emissions Comparison

When comparing emissions from wood stoves to gas heaters, it’s essential to consider the type of fuel being burned. Wood stoves, especially those burning wet or unseasoned wood, can produce significantly higher emissions due to incomplete combustion and higher particulate matter emissions. According to the US Environmental Protection Agency (EPA), wood-burning appliances can emit up to 14.7 grams of particulate matter (PM) per million British thermal units (BTU) of heat produced, whereas natural gas heaters typically emit around 0.02 grams of PM per million BTU.

Emissions Factors by Fuel Type

The emissions factors vary depending on the type of fuel burned in a wood stove. Burning dry, seasoned wood can reduce emissions, but it’s still not as clean as burning natural gas. For example, burning dry, seasoned wood can produce around 5-7 grams of PM per million BTU, whereas burning natural gas produces around 0.02 grams of PM per million BTU. Additionally, wood stoves can produce higher emissions of carbon monoxide (CO), nitrogen oxides (NOx), and volatile organic compounds (VOCs) compared to gas heaters.

Improving Wood Stove Efficiency

To minimize emissions from wood stoves, it’s crucial to maintain and operate them efficiently. This includes burning only dry, seasoned wood, ensuring proper air supply, and maintaining the stove regularly. By following these guidelines, wood stove owners can reduce emissions and enjoy a more efficient and cleaner heating experience.