Air conditioning apparatus

摘要

An air conditioning apparatus which includes an outdoor unit incorporating therein an outdoor heat exchanger working as a condenser during cooling and a fan for cooling the heat exchanger, and a plurality of indoor units each incorporating therein a compressor, an indoor heat exchanger working as an evaporator during cooling and a pressure reducer. The indoor and outdoor units are connected through cooling medium supply and return pipings through which cooling medium at high pressure flows during cooling, while cooling medium at low pressure is caused to flow therethrough during heating for efficient air conditioning and facilitation of installment of the apparatus.