{"abstract":"The U.S. Department of Energy (\"DOE\") is amending the test procedure for compressors to correct an error and to ensure that pressure ratio is expressed in terms of absolute pressure. DOE is also correcting the formula for isentropic efficiency and specific energy consumption of the packaged compressor by incorporating a K<INF>6</INF> correction factor to correct for differences in pressure ratio when testing at differing elevations. Finally, DOE is amending the definition of \"air compressor\" to include a minor clarification and revise a typographical error.","action":"Final rule.","agencies":[{"raw_name":"DEPARTMENT OF ENERGY","name":"Energy Department","id":136,"url":"https://www.federalregister.gov/agencies/energy-department","json_url":"https://www.federalregister.gov/api/v1/agencies/136","parent_id":null,"slug":"energy-department"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2025/01/17/2025-01002.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"431","title":10}],"citation":"90 FR 5538","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"The effective date of this rule is April 2, 2025. The amendments will be mandatory for product testing starting July 16, 2025.","disposition_notes":null,"docket_ids":["EERE-2022-BT-TP-0019"],"dockets":[{"supporting_documents":[{"title":"2023-03-22  Transcript of Proceedings in the Matter of:  Compressors Test Procedure: Notice of Proposed Rulemaking; Docket No.: EERE-2022-BT-TP-0019","document_id":"EERE-2022-BT-TP-0019-0020"},{"title":"2023-03-22  Presentation: Compressors Test Procedure:  Notice of Proposed Rulemaking, Public Meeting - March 22, 2023","document_id":"EERE-2022-BT-TP-0019-0019"}],"agency_name":"EERE","documents":[{"comment_count":0,"comment_start_date":null,"updated_at":"2025-01-17T17:56:51.975-05:00","comment_url":"https://www.regulations.gov/commenton/EERE-2022-BT-TP-0019-0029","allow_late_comments":false,"id":"EERE-2022-BT-TP-0019-0029","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":2,"id":"EERE-2022-BT-TP-0019","title":"Test Procedure for Compressors"}],"document_number":"2025-01002","effective_on":"2025-04-02","end_page":5560,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2025/01/17/2025-01002.xml","html_url":"https://www.federalregister.gov/documents/2025/01/17/2025-01002/energy-conservation-program-test-procedure-for-compressors","images":{"ER17JA25.092":{"large":"https://img.federalregister.gov/ER17JA25.092/ER17JA25.092_large.png","medium":"https://img.federalregister.gov/ER17JA25.092/ER17JA25.092_medium.png","original_size":"https://img.federalregister.gov/ER17JA25.092/ER17JA25.092_original_size.png"},"ER17JA25.094":{"large":"https://img.federalregister.gov/ER17JA25.094/ER17JA25.094_large.png","medium":"https://img.federalregister.gov/ER17JA25.094/ER17JA25.094_medium.png","original_size":"https://img.federalregister.gov/ER17JA25.094/ER17JA25.094_original_size.png"}},"images_metadata":{"ER17JA25.092":{"large":{"identifier":"ER17JA25.092","content_type":"image/png","size":2380,"width":624,"sha":"9cff942f1843c7ca59222177c44c293b","url":"https://img.federalregister.gov/ER17JA25.092/ER17JA25.092_large.png","height":98},"medium":{"identifier":"ER17JA25.092","content_type":"image/png","size":1061,"width":293,"sha":"9525e32072a5e4786e19474479420837","url":"https://img.federalregister.gov/ER17JA25.092/ER17JA25.092_medium.png","height":46},"original_size":{"identifier":"ER17JA25.092","content_type":"image/png","size":2409,"width":2214,"sha":"e4e88099bde85a945c3dee4ae570427e","url":"https://img.federalregister.gov/ER17JA25.092/ER17JA25.092_original_size.png","height":348}},"ER17JA25.094":{"large":{"identifier":"ER17JA25.094","content_type":"image/png","size":1449,"width":218,"sha":"306edf639cfeee77764c1c56f0a42e1d","url":"https://img.federalregister.gov/ER17JA25.094/ER17JA25.094_large.png","height":65},"medium":{"identifier":"ER17JA25.094","content_type":"image/png","size":603,"width":103,"sha":"aa1bbc0d675c2ecc93abbb6e385f48e1","url":"https://img.federalregister.gov/ER17JA25.094/ER17JA25.094_medium.png","height":31},"original_size":{"identifier":"ER17JA25.094","content_type":"image/png","size":1603,"width":779,"sha":"e161f7ae092549ffa2a6f2a44ccc8e8f","url":"https://img.federalregister.gov/ER17JA25.094/ER17JA25.094_original_size.png","height":234}}},"json_url":"https://www.federalregister.gov/api/v1/documents/2025-01002?publication_date=2025-01-17","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2025-01-17/2025-01002/mods.xml","not_received_for_publication":null,"page_length":23,"page_views":{"count":432,"last_updated":"2026-10-23 14:15:06 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2025-01-17/pdf/2025-01002.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2025-01002.pdf?1737035119","publication_date":"2025-01-17","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2025/01/17/2025-01002.txt","regulation_id_number_info":{"1904-AF08":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/1904-AF08/test-procedure-for-air-compressors","title":"Test Procedure for Air Compressors","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&RIN=1904-AF08&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["1904-AF08"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"2023-03-22  Transcript of Proceedings in the Matter of:  Compressors Test Procedure: Notice of Proposed Rulemaking; 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