GB 20665-2006
AbolishedMinimum 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 regulate the energy performance of these residential appliances, ensuring they meet mandatory efficiency thresholds for manufacturing, market entry, and energy labeling. The standard is used by manufacturers, testing laboratories, and regulatory bodies to classify products into grades (e.g., Grade 1, 2, or 3) based on their thermal efficiency under specified test conditions.
Related Standards
GB/Z 18718-2002
Energy saving directives for heat treatment
GB/T 33857-2017
General principles for energy conservation assessment—Combined heat and power generation project
GB/T 19064-2003
Solar home system specifications and test procedure
GB/T 18293-2001
On-line measurement on operating efficiency of power convertor equipments
GB/T 18292-2001
Economical operation of boilers for daily life
GB/T 15320-2001
Evaluation guides of the energy conservation products
GB/T 2588-2000
The general principles for calculation of thermal effic-iency of equipment
GB/T 17954-2000
Economical operation of industrial boilers
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.