Abstract: This article analyzes the calculation method of CSPF/HSPF seasonal energy efficiency ratio in Australian room air conditioner standard AS/NZS 3823.4-2014; analyzes the impact of various working conditions on energy efficiency and discusses the analysis of performance improvement methods. In the Australian room air conditioner cooling CSPF and heating HSPF test, the focus was on the energy efficiency of low temperature refrigeration and low temperature heating. According to the influencing factors of each test point, adjust the energy efficiency of inverter products, such as compressor frequency, fan speed, expansion valve step and other parameters, so that the comprehensive energy efficiency is optimized.

Key words: CSPF, HSPF, Low temperature cooling, Low temperature heating