Air conditioners consume a tremendous amount of electricity, causing electricity costs to double during the summer months. With the reality of a growing energy crisis, manufacturers must consider energy efficiency.
此種情形在能源無缺時，還不構成威脅，但從民國六十七年，第二次能源危機發生，加上經濟不景氣，冷氣機的高耗電量便顯得格外刺眼。「省電」於是成為第二階段的訴求重點。