To provide a refrigeration apparatus that suppresses noise that occurs when reverting to a heating operation and with which it is easy to ensure heating capacity. An air conditioner (1) that is a refrigeration apparatus has, in a refrigerant circuit (10), a compressor (11), an outdoor heat exchanger (13) that functions as an evaporator in a heating operation, an indoor heat exchanger (16) that functions as a condenser in the heating operation, and a four way valve (12). The refrigerant circuit (10) is configured in such a way that a high-pressure value of the refrigerant circuit (10) in a defrost operation is lower than a high-pressure value of the refrigerant circuit (10) in the heating operation. An end-of-defrost frequency decrease rate, which is a rate of decrease in the operating frequency of the compressor (11) in the defrost operation, is set faster than a normal frequency decrease rate, which is a rate of decrease in the operating frequency of the compressor (11) in the heating operation.