GB 20665-2015
ActiveMinimum allowable values of energy efficiency and energy efficiency grades for domestic gas instantaneous water heater and gas fired heating and hot water combi-boilers
家用燃气快速热水器和燃气采暖热水炉能效限定值及能效等级
Application Summary AI generated
This standard specifies the minimum allowable values of energy efficiency and the energy efficiency grades for domestic gas instantaneous water heaters and gas-fired heating and hot water combi-boilers. It is applied in China to classify products into energy efficiency grades (1, 2, or 3) based on their thermal efficiency, ensuring that only units meeting the minimum grade 3 threshold can be manufactured and sold. The standard is used by manufacturers, testing laboratories, and regulatory bodies for product certification, market surveillance, and consumer labeling in the residential gas appliance industry.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.