Home / Standards / GB 37479-2019 GB 37479-2019 Active Minimum allowable values of energy efficiency and energy efficiency grades for ducted air conditioners 风管送风式空调机组能效限定值及能效等级 Standard Type GB ICS 27.010 CCS F01 Status 现行 Issue Date 2019-04-04 Implementation 2020-11-01 Responsible Dept 国家标准委 Drafting Unit N/A