This Discussion Paper suggests a process for transitioning to test methods for residential wood heaters that are more representative of how cordwood fueled heaters are used in people’s homes. EPA seeks input from any interested party on how to improve current cordwood test methods and balance representation of in-home use with precision and variability concerns as the Agency considers the development of a reference method. EPA has established a non-rulemaking docket for any input, questions or suggestions relevant to this Discussion Paper under Docket ID No. EPA-HQ-OAR-2016-0130.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.