The replacement of copper by aluminum, which has a lower price, is becoming a developing trend in the
Chinese indoor air conditioner industry. However, the significant greenhouse gas emission during aluminum
production may restrict this development. Based on a life cycle assessment, we use the carbon
footprint method to account for the carbon footprint attributed to copper and aluminum usage in the
Chinese indoor air conditioner industry from 2000 to 2009. The results show that (1) the carbon footprint
of the Chinese indoor air conditioner industry generally declined during this period mainly because
of the improvement in copper and aluminum production technology; and (2) after 2004, the carbon sink
forest costs of this industry became lower than the production costs mainly because of the rising copper
price and the perennial stability of the aluminum price. Based on these results, we analyze the developing
trend of aluminum substitution for copper and propose a cooperative control strategy to limit the
carbon footprint and to guide the development of the Chinese indoor air conditioner
The replacement of copper by aluminum, which has a lower price, is becoming a developing trend in the
Chinese indoor air conditioner industry. However, the significant greenhouse gas emission during aluminum
production may restrict this development. Based on a life cycle assessment, we use the carbon
footprint method to account for the carbon footprint attributed to copper and aluminum usage in the
Chinese indoor air conditioner industry from 2000 to 2009. The results show that (1) the carbon footprint
of the Chinese indoor air conditioner industry generally declined during this period mainly because
of the improvement in copper and aluminum production technology; and (2) after 2004, the carbon sink
forest costs of this industry became lower than the production costs mainly because of the rising copper
price and the perennial stability of the aluminum price. Based on these results, we analyze the developing
trend of aluminum substitution for copper and propose a cooperative control strategy to limit the
carbon footprint and to guide the development of the Chinese indoor air conditioner
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