All Napoleon manufactured air conditioners are made with the chlorine-free refrigerant R-410A, which is an alternative cooling agent, taking the place of R22 that is used in older models. Refrigerants are liquids that are housed within the coils of your air conditioner to cool and dehumidify your home. By using a refrigerant that is chlorine-free, Napoleon air conditioners do not contribute to ozone depletion and offer a higher SEER (seasonal energy efficiency ratio) rating. In addition, R-410A reduces power consumption and increases the durability of your compressor, extending the life of a Napoleon air conditioner considerably.