The project aims to facilitate energy saving technology innovation for refrigerators and free trade in the APEC by helping harmonizing current testing methods with the IEC 62552:2015. Commonalities and differences between the new IEC 62552 and economies’ standards have been investigated; key impacting factors contribution to energy consumption, volume and energy efficiency have been identified and analysed by desktop research and laboratory testing, and their ambient temperature, target temperature, storage plan and temperature sensor and product adaptability for twice tests at different temperatures.