Home / Standards / GB 29541-2013 GB 29541-2013 Active Minimum allowable values of energy efficiency and energy efficiency grades for heat pump water heaters 热泵热水机能效限定值及能效等级 Standard Type GB ICS 27.01 CCS F01 Status 现行 Issue Date 2021-12-31 Implementation 2013-10-01 Responsible Dept N/A Drafting Unit N/A