The U.S. Department of Energy's Golden Field Office is issuing a Request for Information (RFI) focused on in-situ testing of residential wood heaters to gather stakeholder feedback on improving their design and performance in real-world settings. The RFI aims to collect data on emissions and efficiency, emphasizing the importance of understanding how various factors, such as operator behavior and chimney design, influence wood heater performance. With approximately 13 million American households using wood heaters, this initiative seeks to drive innovation for cleaner-burning options while addressing significant particulate matter emissions. Responses to the RFI must be submitted electronically by 5:00 PM ET on September 6, 2024, to woodheat@ee.doe.gov, and should include detailed organizational information and insights on testing methodologies.