A refrigeration cycle apparatus , comprising: a compressor that sucks in refrigerant, compresses the refrigerant, and then discharges the refrigerant; a first heat exchanger that functions as a radiator in a first cycle and functions as an evaporator in a second cycle; a second heat exchanger that functions as an evaporator in the first cycle and functions as a radiator in the second cycle; and a switching mechanism including a first channel (F1) and configured to perform switching among a first connection state, a second connection state, and a third connection state, wherein in the first connection state, the refrigeration cycle apparatus repeatedly performs the first cycle in which refrigerant flows through the compressor, the first heat exchanger, the second heat exchanger, and the compressor in this order, in the second connection state, the refrigeration cycle apparatus repeatedly performs the second cycle in which refrigerant flows through the compressor, the second heat exchanger, the first heat exchanger, and the compressor in this order, and in the third connection state, a passage between the compressor and the first heat exchanger and a passage between the compressor and the second heat exchanger are closed, and the first channel (F1) in the refrigeration cycle apparatus is configured such that it provides communication between the first heat exchanger and the second heat exchanger, wherein in the first connection state and in the second connection state the first channel (F1) is configured such that it does not provide communication between the first heat exchanger and the second heat exchanger . a compressor that sucks in refrigerant, compresses the refrigerant, and then discharges the refrigerant; a first heat exchanger that functions as a radiator in a first cycle and functions as an evaporator in a second cycle; a second heat exchanger that functions as an evaporator in the first cycle and functions as a radiator in the second cycle; and a switching mechanism including a first channel (F1) and configured to perform switching among a first connection state, a second connection state, and a third connection state, wherein in the first connection state, the refrigeration cycle apparatus repeatedly performs the first cycle in which refrigerant flows through the compressor, the first heat exchanger, the second heat exchanger, and the compressor in this order, in the second connection state, the refrigeration cycle apparatus repeatedly performs the second cycle in which refrigerant flows through the compressor, the second heat exchanger, the first heat exchanger, and the compressor in this order, and in the third connection state, a passage between the compressor and the first heat exchanger and a passage between the compressor and the second heat exchanger are closed, and the first channel (F1) in the refrigeration cycle apparatus is configured such that it provides communication between the first heat exchanger and the second heat exchanger, wherein in the first connection state and in the second connection state the first channel (F1) is configured such that it does not provide communication between the first heat exchanger and the second heat exchanger . <EOS>