The operation of an air compressor consumes a significant amount of electrical energy, with the vast majority of this energy being converted into heat. This heat is typically dissipated into the atmosphere through the unit's air-cooling or water-cooling system. By fully recovering the waste heat from the air compressor (75-90%), it can be used for winter heating and summer cooling. Additionally, it can provide sanitary hot water externally. This system saves energy, improves the operational efficiency of the air compressor unit, and achieves energy conservation and enhanced efficiency.