abstract |
A refrigeration cycle apparatus that is able to suppress a decrease in capacity when a refrigerant that contains at least 1,2-difluoroethylene is used is provided. In an air conditioner ( 1 ) including a refrigerant circuit ( 10 ) in which a compressor ( 21 ), an outdoor heat exchanger ( 23 ), an outdoor expansion valve ( 24 ), a liquid-side connection pipe ( 6 ), an indoor heat exchanger ( 31 ), and a gas-side connection pipe ( 5 ) are connected, a refrigerant containing at least 1,2-difluoroethylene is used, a pipe outer diameter of the liquid-side connection pipe ( 6 ) and a pipe outer diameter of the gas-side connection pipe ( 5 ) each are D 0 /8 inches (where, “D 0 -⅛ inches” is a pipe outer diameter of a connection pipe when refrigerant R32 is used), a range of the D 0 of the liquid-side connection pipe ( 6 ) is “2≤D 0 ≤4”, and a range of the D 0 of the gas-side connection pipe ( 5 ) is “3≤D 0 ≤8”. |